GMW14241 Single Wire Low Speed CAN

Test Name

Test Description

Observation

4.3.1.1 Device Resistance.

Measure the device resistance of the DUT.

 

4.3.1.1.1 Dev Res DUT connectd to supply Stndrd Res.

The DUT is in sleep mode and is connected to supply and ground. There is no communication on the bus.

Verify Rin

AcceptanceCriteria:

R in (Ohms)

Min         6435

Nominal  6490  

Max        6665

4.3.1.1.1 Dev Res DUT connectd to supply Primary Res.

The DUT is in sleep mode and is connected to supply and ground. There is no communication on the bus.

Verify Rin

AcceptanceCriteria:

R in (Ohms)

Min         2949

Nominal  3010  

Max        3170

4.3.1.1.2 Dev Res DUT not connectd to supply  Norml load Res

The DUT is in sleep mode and is not connected to supply. There is no communication on the bus.

Verify Rin

AcceptanceCriteria:

Rl should be below range.

5140 Ω ≤ Rl ≤ 8790Ω

4.3.1.1.2 Dev Res DUT not connectd to supply Primary Res

The DUT is in sleep mode and is not connected to supply. There is no communication on the bus.

Verify Rin

AcceptanceCriteria:

Rl should be below range.

2360 Ω ≤ Rl ≤ 5310Ω

4.3.1.2 Device Capacitance

Measure the device capacitance of the DUT.

The DUT is disconnected from supply and ground.

Verify Cul

AcceptanceCriteria:

Cul should be below range.

135pF ≤ Cul ≤ 300pF

 

4.3.2.1 Signal Voltage Level in Normal Mode

Measure the CAN bus output signal voltage levels in normal mode over the complete battery power voltage range.

Verify Voh

AcceptanceCriteria:

Voh should be below range

Min      4.2v

Typical 4.65v

Max     5.1v

4.3.2.1 Signal Vtg Lvl in Normal Mode 6V

Measure the absolute voltage level on the CAN Bus line for 6.0 V

Verify Voh AcceptanceCriteria: Voh should be below range

Min      3.2v

Max     5.1v

4.3.2.1 Signal Vtg Lvl in Normal Mode 6.5V

Measure the absolute voltage level on the CAN Bus line for 6.5V

Verify Voh AcceptanceCriteria: Voh should be below range

Min      3.7v

Max     5.1v

4.3.2.1 Signal Vtg Lvl in Normal Mode 7V

Measure the absolute voltage level on the CAN Bus line for 7.0V

Verify Voh AcceptanceCriteria: Voh should be below range

Min      4.2v

Max     5.1v

4.3.2.1 Signal Vtg Lvl in Normal Mode 9V

Measure the absolute voltage level on the CAN Bus line for 9.0V

Verify Voh AcceptanceCriteria: Voh should be below range

Min      4.2v

Max     5.1v

4.3.2.1 Signal Vtg Lvl in Normal Mode 12V

Measure the absolute voltage level on the CAN Bus line for 12.0V

Verify Voh AcceptanceCriteria: Voh should be below range

Min      4.2v

Max     5.1v

4.3.2.1 Signal Vtg Lvl in Normal Mode 16V

Measure the absolute voltage level on the CAN Bus line for 16.0V

Verify Voh AcceptanceCriteria: Voh should be below range

Min      4.2v

Max     5.1v

4.3.2.1 Signal Vtg Lvl in Normal Mode 18V

Measure the absolute voltage level on the CAN Bus line for 18.0V

Verify Voh AcceptanceCriteria: Voh should be below range

Min      4.2v

Max     5.1v

4.3.2.1 Signal Vtg Lvl in Normal Mode 26.5V

Measure the absolute voltage level on the CAN Bus line for 26.5V

Verify Voh AcceptanceCriteria: Voh should be below range

Min      4.2v

Max     5.1v

4.3.3.1 Recessive or Passive State Low Voltage in Normal Mode

Measure the recessive voltage level on the CAN Bus line for each of the following

battery voltage levels:

6.0 V, 6.5 V, 9.0 V, 12.0 V, 16.0 V, 18.0 V, 26.5 V.

Check the CTS to determine whether the DUT shall support operation at a supply

voltage of ≤9 V and ≥ 16 V

Each voltage level shall last for at least 1 minute.

Add the oscilloscope plots to the test report displaying the CAN line.

Verify Vleaknorm

AcceptanceCriteria:

Vleaknorm should be below range

-0.2 V £ Vleaknorm £ 0.2 V

4.3.3.1 Rec or Passive State Low Vtg in Nrmal Mode 6V

Measure the recessive voltage level on the CAN Bus line for 6.0V

AcceptanceCriteria:

Vleaknorm should be below range

-0.2 V £ Vleaknorm £ 0.2 V

4.3.3.1 Rec or Passive State Low Vtg in Nrmal Mode 6.5V

Measure the recessive voltage level on the CAN Bus line for 6.5V

AcceptanceCriteria:

Vleaknorm should be below range

-0.2 V £ Vleaknorm £ 0.2 V

4.3.3.1 Rec or Passive State Low Vtg in Nrmal Mode 9V

Measure the recessive voltage level on the CAN Bus line for 9.0V

AcceptanceCriteria:

Vleaknorm should be below range

-0.2 V £ Vleaknorm £ 0.2 V

4.3.3.1 Rec or Passive State Low Vtg in Nrmal Mode 12V

Measure the recessive voltage level on the CAN Bus line for 12.0V

AcceptanceCriteria:

Vleaknorm should be below range

-0.2 V £ Vleaknorm £ 0.2 V

4.3.3.1 Rec or Passive State Low Vtg in Nrmal Mode 16V

Measure the recessive voltage level on the CAN Bus line for 16.0V

AcceptanceCriteria:

Vleaknorm should be below range

-0.2 V £ Vleaknorm £ 0.2 V

4.3.3.1 Rec or Passive State Low Vtg in Nrmal Mode 18V

Measure the recessive voltage level on the CAN Bus line for 18.0V

AcceptanceCriteria:

Vleaknorm should be below range

-0.2 V £ Vleaknorm £ 0.2 V

4.3.3.1 Rec or Passive State Low Vtg in Nrmal Mode 26.5V

Measure the recessive voltage level on the CAN Bus line for 26.5V

AcceptanceCriteria:

Vleaknorm should be below range

-0.2 V £ Vleaknorm £ 0.2 V

4.3.4.1 Input Threshold in Normal Mode

Increase the current I in useful steps and measure the voltage level between CANH and

ground. Check the behavior of the DUT using an oscilloscope.

Perform the test at the following values for Ubatt:

6.0 V, 9.0 V, 12.0 V, 14.0 V, 16.0 V, 18.0 V and 26.5 V.

Check the CTS to determine whether the DUT shall support operation at a supply

voltage of ≤9 V and ≥ 16 V.

Add the oscilloscope plots to the test report showing the bus activity at various Vdiff voltages.

Verify Vdiff

Acceptance Criteria:

The DUT shall stop the transmission of its frames if Vdiff = 2.2 V is reached, but not as

long as Vdiff < 2.0 V.

4.3.4.1 Input Thrshld Normal Mode 6V

Measure the voltage level between CAN Bus line and ground for 6.0V

Verify Vdiff

Acceptance Criteria:

The DUT shall stop the transmission of its frames if Vdiff = 2.2 V is reached, but not as

long as Vdiff < 2.0 V.

4.3.4.1 Input Thrshld Normal Mode 9V

Measure the voltage level between CAN Bus line and ground for 9.0V

Verify Vdiff

Acceptance Criteria:

The DUT shall stop the transmission of its frames if Vdiff = 2.2 V is reached, but not as

long as Vdiff < 2.0 V.

4.3.4.1 Input Thrshld Normal Mode 12V

Measure the voltage level between CAN Bus line and ground for 12.0V

Verify Vdiff

Acceptance Criteria:

The DUT shall stop the transmission of its frames if Vdiff = 2.2 V is reached, but not as

long as Vdiff < 2.0 V.

4.3.4.1 Input Thrshld Normal Mode 14V

Measure the voltage level between CAN Bus line and ground for 14.0V

Verify Vdiff

Acceptance Criteria:

The DUT shall stop the transmission of its frames if Vdiff = 2.2 V is reached, but not as

long as Vdiff < 2.0 V.

4.3.4.1 Input Thrshld Normal Mode 16V

Measure the voltage level between CAN Bus line and ground for 16.0V

Verify Vdiff

Acceptance Criteria:

The DUT shall stop the transmission of its frames if Vdiff = 2.2 V is reached, but not as

long as Vdiff < 2.0 V.

4.3.4.1 Input Thrshld Normal Mode 18V

Measure the voltage level between CAN Bus line and ground for 18.0V

Verify Vdiff

Acceptance Criteria:

The DUT shall stop the transmission of its frames if Vdiff = 2.2 V is reached, but not as long as Vdiff < 2.0 V.

4.3.4.1 Input Thrshld Normal Mode 26.5V

Measure the voltage level between CAN Bus line and ground for 26.5V

Verify Vdiff

Acceptance Criteria:

The DUT shall stop the transmission of its frames if Vdiff = 2.2 V is reached, but not as long as Vdiff < 2.0 V.

4.3.4.2 Input Threshold in HVWU Mode

Increase the voltage VWU in steps of 0.1 V until the DUT wakes up. For each value of

VWU , create a short pulse, e.g., 30 ms, on the CAN bus by closing the switch, and check the behaviour of the DUT using an oscilloscope. Measure the voltage level between

CANH and ground.

Perform the test at the following values for Vbatt:

6.0 V, 9.0 V, 12.0 V, 14.0 V, 16.0 V, 18.0 V and 26.5 V.

Check the CTS to determine whether the DUT shall support operation at a supply

voltage of ≤9 V and ≥ 16 V

Add the oscilloscope plots to the test report showing the bus activity at various Vdiff voltages.

Verify Vwu

Acceptance Criteria:

The DUT shall not wake up as long VWU is less than Vi hwu and no later than

VWU = Vihwumax

 

4.3.4.2 Input Thrshld HVWU Mode 6V

Measure the voltage level between CAN Bus line and ground for 6.0V

Vwu should be below range

0.7 V £ VWu £ 2.35 V

4.3.4.2 Input Thrshld HVWU Mode 9V

Measure the voltage level between CAN Bus line and ground for 9.0V

Vwu should be below range

3.7 V £ VWu £ 5.35 V

4.3.4.2 Input Thrshld HVWU Mode 12V

Measure the voltage level between CAN Bus line and ground for 12.0V

Vwu should be below range 6.6 V £ VWu £ 7.9 V

4.3.4.2 Input Thrshld HVWU Mode 14V

Measure the voltage level between CAN Bus line and ground for 14.0V

Vwu should be below range 6.6 V £ VWu £ 7.9 V

4.3.4.2 Input Thrshld HVWU Mode 16V

Measure the voltage level between CAN Bus line and ground for 16.0V

Vwu should be below range 6.6 V £ VWu £ 7.9 V

4.3.4.2 Input Thrshld HVWU Mode 18V

Measure the voltage level between CAN Bus line and ground for 18.0V

Vwu should be below range 6.6 V £ VWu £ 7.9 V

4.3.4.2 Input Thrshld HVWU Mode 26.5V

Measure the voltage level between CAN Bus line and ground for 26.5V

Vwu should be below range 6.6 V £ VWu £ 7.9 V

4.3.5 Min and Max Supply Vtg Lvl for Bus Comm

Set the supply voltage of the DUT to 12.0 V.

Decrease the supply voltage of the DUT in steps of 0.1 V with a speed of 1 minute per step.

Check the bus communication and measure the lowest supply voltage level with no communication problems

Increase the supply voltage of the DUT in steps of 0.1 V with a speed of 1 minute per step and check when the DUT starts with the transmission of its messages again.

Then set the supply voltage to 0 V for t > 10 s..

For devices which are required to support communication within an extended supply voltage range (e.g., during crank, see SSTS and CTS):

 

set the supply voltage to 6.5 V and measure the time until the DUT

resumes bus communication, i.e., successful reception or transmission of a message.

 

For devices which are not required to support bus communication within an extended supply voltage range:

 

set the supply voltage to 9.5 V and measure the time until the DUT

resumes bus communication.

To measure the maximum supply voltage level for CAN communication, increase the supply voltage in useful steps to 26.5 V maximum.

 

 

4.3.5.1 Min Max Pwr Supply Extd_Min Supply

Check the bus communication and measure the lowest supply voltage level with no

communication problems

 

The DUT shall be able to receive and transmit messages down to a supply voltage of at least 9 V.

4.3.5.1 Min Max Pwr Supply Extd_Resume Vltg

Increase the supply voltage of the DUT in steps of 0.1 V with a speed of 1 minute per step and check when the DUT starts with the transmission of its messages

The supply voltage for resuming operation shall be £ 9.5 V.

4.3.5.1 Min Max Pwr Supply Extd_Resume Time

Measure the time until the DUT resumes bus communication, i.e., successful reception or transmission of a message.

The device shall resume bus communication within 300 ms (in case that there is an interruption of the CAN communication) after the supply voltage has reached a level of £ 9.5 V.

4.3.5.1 Min Max Pwr Supply Extd_Max Supply

Measure the maximum supply voltage level for CAN communication, increase the supply voltage in useful steps to 26.5 V maximum.

The DUT shall be able to receive and transmit messages up to a supply voltage of at least 16 V.

4.3.5.2 Min Max Pwr Supply Std_Min Supply

Check the bus communication and measure the lowest supply voltage level with no

communication problems

 

The DUT shall be able to receive and transmit messages down to a supply voltage of at least 6.5v

4.3.5.2 Min Max Pwr Supply Std_Resume Vltg

Increase the supply voltage of the DUT in steps of 0.1 V with a speed of 1 minute per step and check when the DUT starts with the transmission of its messages

The supply voltage of the DUT for resuming operation after a voltage drop shall be £ 6.5 V.

4.3.5.2 Min Max Pwr Supply Std_Resume Time

Measure the time until the DUT resumes bus communication, i.e., successful reception or transmission of a message.

The DUT shall resume its operation within 300 ms, after the supply voltage returned to a level £ 6.5 V.

4.3.5.2 Min Max Pwr Supply Std_Max Supply

Measure the maximum supply voltage level for CAN communication, increase the supply voltage in useful steps to 26.5 V maximum.

The DUT shall be able to receive and transmit messages up to a supply voltage of at least 26.5V.

4.3.6 Behaviour during Crank

Apply Test Pulse No. 4, severity level IV, as defined in GMW3097, to the supply voltage lines of the DUT.

The test tool simulates a correct reaction of the other nodes to the messages from the DUT.

For devices which are required to support communication within an extended supply voltage range :

The DUT shall not cause any error conditions to occur on the bus, i.e. there shall be no error frames during and after the application of the crank pulse. The device shall resume bus communication within 300 ms (If there is an interruption of the CAN communication) after the supply voltage has reached a level of ≤ 6.5V

For devices which are not required to support bus communication within an

extended supply voltage range:

The DUT shall not cause any error conditions to occur on the bus, i.e. there shall be no error frames during and after the application of the crank pulse. The device shall resume bus communication within 300 ms (If there is an interruption of the CAN communication) after the supply voltage has reached a level

of ≤ 9.5 V

4.3.6.1 Behvr During Crnk Pulse UP2.5 Suprted

Apply Test Pulse No. 4, severity level IV, as defined in GMW3097, to the supply voltage lines of the DUT.

The test tool simulates a correct reaction of the other nodes to the messages from the DUT.

The DUT shall not cause any error conditions to occur on the bus, i.e. there shall be no error frames during and after the application of the crank pulse. The device shall resume bus communication within 300 ms (If there is an interruption of the CAN communication) after the supply voltage has reached a level of ≤ 6.5V

4.3.6.1 Behvr During Crnk Pulse UP3 Suprted

Apply Test Pulse No. 4, severity level IV, as defined in GMW3097, to the supply voltage lines of the DUT.

The test tool simulates a correct reaction of the other nodes to the messages from the DUT.

The DUT shall not cause any error conditions to occur on the bus, i.e. there shall be no error frames during and after the application of the crank pulse. The device shall resume bus communication within 300 ms (If there is an interruption of the CAN communication) after the supply voltage has reached a level of ≤ 6.5V

4.3.6.1 Behvr During Crnk Pulse UP4 Suprted

Apply Test Pulse No. 4, severity level IV, as defined in GMW3097, to the supply voltage lines of the DUT.

The test tool simulates a correct reaction of the other nodes to the messages from the DUT.

The DUT shall not cause any error conditions to occur on the bus, i.e. there shall be no error frames during and after the application of the crank pulse. The device shall resume bus communication within 300 ms (If there is an interruption of the CAN communication) after the supply voltage has reached a level of ≤ 6.5V

4.3.6.1 Behvr During Crnk Pulse UP5 Suprted

Apply Test Pulse No. 4, severity level IV, as defined in GMW3097, to the supply voltage lines of the DUT.

The test tool simulates a correct reaction of the other nodes to the messages from the DUT.

The DUT shall not cause any error conditions to occur on the bus, i.e. there shall be no error frames during and after the application of the crank pulse. The device shall resume bus communication within 300 ms (If there is an interruption of the CAN communication) after the supply voltage has reached a level of ≤ 6.5V

4.3.6.2 Behvr During Crnk Pulse UP2.5 NotSuprted

Apply Test Pulse No. 4, severity level IV, as defined in GMW3097, to the supply voltage lines of the DUT.

The test tool simulates a correct reaction of the other nodes to the messages from the DUT.

The DUT shall not cause any error conditions to occur on the bus, i.e. there shall be no error frames during and after the application of the crank pulse. The device shall resume bus communication within 300 ms (If there is an interruption of the CAN communication) after the supply voltage has reached a level

of ≤ 9.5 V

4.3.6.2 Behvr During Crnk Pulse UP3 NotSuprted

Apply Test Pulse No. 4, severity level IV, as defined in GMW3097, to the supply voltage lines of the DUT.

The test tool simulates a correct reaction of the other nodes to the messages from the DUT.

The DUT shall not cause any error conditions to occur on the bus, i.e. there shall be no error frames during and after the application of the crank pulse. The device shall resume bus communication within 300 ms (If there is an interruption of the CAN communication) after the supply voltage has reached a level of ≤ 9.5 V

4.3.6.2 Behvr During Crnk Pulse UP4 NotSuprted

Apply Test Pulse No. 4, severity level IV, as defined in GMW3097, to the supply voltage lines of the DUT.

The test tool simulates a correct reaction of the other nodes to the messages from the DUT.

The DUT shall not cause any error conditions to occur on the bus, i.e. there shall be no error frames during and after the application of the crank pulse. The device shall resume bus communication within 300 ms (If there is an interruption of the CAN communication) after the supply voltage has reached a level of ≤ 9.5 V

4.3.6.2 Behvr During Crnk Pulse UP5 NotSuprted

Apply Test Pulse No. 4, severity level IV, as defined in GMW3097, to the supply voltage lines of the DUT.

The test tool simulates a correct reaction of the other nodes to the messages from the DUT.

The DUT shall not cause any error conditions to occur on the bus, i.e. there shall be no error frames during and after the application of the crank pulse. The device shall resume bus communication within 300 ms (If there is an interruption of the CAN communication) after the supply voltage has reached a level of ≤ 9.5 V

4.3.7 Signal Rise Fall time

Measure the signal rise and fall times under the given conditions with an oscilloscope

Perform this measurement at least 1000 times per edge to determine the minimum and

maximum values of the rise/fall times

Verify Rise Time , Fall Time

Acceptance Criteria:

                     Minimum                   Maximum

Risetime          1.5μs                         4.73μs

Fall Time          1.35μs                        7.5 μs

4.3.7.1.1.1 Signal Rise Fall time Min Ld at Min Tau

Measure the signal rise and fall times for Min Ld Min Tau

Verify Rise Time , Fall Time

Acceptance Criteria:

                     Minimum                   Maximum

Risetime          1.5μs                         4.73μs

Fall Time          1.35μs                        7.5 μs

4.3.7.1.1.1 Signal Rise Fall time Min Ld at Max Tau

Measure the signal rise and fall times for Min Ld Max Tau

Verify Rise Time , Fall Time

Acceptance Criteria:

                     Minimum                   Maximum

Risetime          1.5μs                         4.73μs

Fall Time          1.35μs                        7.5 μs

4.3.7.1.1.1 Signal Rise Fall time Max Ld at Min Tau

Measure the signal rise and fall times for Max Ld Min Tau

Verify Rise Time , Fall Time

Acceptance Criteria:

                     Minimum                   Maximum

Risetime          1.5μs                         4.73μs

Fall Time          1.35μs                        7.5 μs

4.3.7.1.1.1 Signal Rise Fall time Max Ld at Max Tau

Measure the signal rise and fall times for Max Ld Max Tau

Verify Rise Time , Fall Time

Acceptance Criteria:

                     Minimum                   Maximum

Risetime          1.5μs                         4.73μs

Fall Time          1.35μs                        7.5 μs

4.3.9 Signal Characteristics.

All wire length shall be < 1.0 m. The signals are measured under maximum and minimum physical load conditions

Measure the signal shapes under the given conditions with an oscilloscope

Acceptance Criteria:

In the first half of the bit time, the bus output level shall be in the range of (81 to 150) % of the DC-value.

 

In the second half of the bit time, the bus output level shall be in the range of(95 to 105) % of the DC-value.

 

4.3.9.1.1 Signal Char Min Ld Min Tau

Measure the signal shapes for Min Ld Min Tau

Acceptance Criteria:

In the first half of the bit time, the bus output level shall be in the range of (81 to 150) % of the DC-value.

 

In the second half of the bit time, the bus output level shall be in the range of(95 to 105) % of the DC-value.

 

4.3.9.1.1 Signal Char Min Ld Max Tau

Measure the signal shapes for Min Ld Max Tau

Acceptance Criteria:

In the first half of the bit time, the bus output level shall be in the range of (81 to 150) % of the DC-value.

 

In the second half of the bit time, the bus output level shall be in the range of(95 to 105) % of the DC-value.

4.3.9.1.2 Signal Char Max Ld Min Tau

Measure the signal shapes for Max Ld Min Tau

Acceptance Criteria:

In the first half of the bit time, the bus output level shall be in the range of (81 to 150) % of the DC-value.

 

In the second half of the bit time, the bus output level shall be in the range of(95 to 105) % of the DC-value.

4.3.9.1.2 Signal Char Max Ld Max Tau

Measure the signal shapes for Max Ld Max Tau

Acceptance Criteria:

In the first half of the bit time, the bus output level shall be in the range of (81 to 150) % of the DC-value.

 

In the second half of the bit time, the bus output level shall be in the range of(95 to 105) % of the DC-value.

4.3.10.1 Tolerance of CAN Bit Time

Measure the bit time under the combinations of given conditions.

Choose a DUT message, and then measure the bit time between the recessive-to-dominant edges of the slopes of at least 20 consecutive bits and calculate the bit time of a single bit.

Acceptance Criteria:

The maximum bit time deviation shall be ± 0.35 % of the nominal bit time.

4.3.10.1.1.1 Tol of CAN Bit Min Ld Min Tau

Measure the bit time for Min Ld Min Tau

Acceptance Criteria:

The maximum bit time deviation shall be ± 0.35 % of the nominal bit time

4.3.10.1.1.2 Tol of CAN Bit Min Ld Max Tau

Measure the bit time for Min Ld Max Tau

Acceptance Criteria:

The maximum bit time deviation shall be ± 0.35 % of the nominal bit time

4.3.10.1.1.3 Tol of CAN Bit Max Ld Min Tau

Measure the bit time for Max Ld Min Tau

Acceptance Criteria:

The maximum bit time deviation shall be ± 0.35 % of the nominal bit time

4.3.10.1.1.4 Tol of CAN Bit Max Ld Max Tau

Measure the bit time for Max Ld Max Tau

Acceptance Criteria:

The maximum bit time deviation shall be ± 0.35 % of the nominal bit time

4.3.10.2 Tolerance of SWCAN BaudRate Variations

Use the loads which has given . During the test situation, the test tool shall be set to the maximum synchronization jump-width.

The test tool transmits the messages as quickly as possible

Acceptance Criteria:

The DUT shall transmit no Errorframes.

4.3.10.2.1.1 Tol of SWCAN BdRate Var Test1 Min Ld Min Tau

Measure the baudrate vartions for Min Ld Min Tau

Acceptance Criteria:

The DUT shall transmit no Errorframes

4.3.10.2.1.1 Tol of SWCAN BdRate Var Test1 Min Ld at Max Tau

Measure the baudrate vartions for Min Ld Max Tau

Acceptance Criteria:

The DUT shall transmit no Errorframes

4.3.10.2.1.2 Tol of SWCAN BdRate Var Test1 Max Ld at Min Tau

Measure the baudrate vartions for Max Ld Min Tau

Acceptance Criteria:

The DUT shall transmit no Errorframes

4.3.10.2.1.2 Tol of SWCAN BdRate Var Test1 Max Ld at Max Tau

Measure the baudrate vartions for Max Ld Max Tau

Acceptance Criteria:

The DUT shall transmit no Errorframes

4.3.10.2.2.1 Tol of SWCAN BdRate Var Test2 Min Ld at Max Tau

Use the loads which has given and Change the baud rate in as small as possible steps and determine at which minimum

and maximum baud rate the DUT starts to send error frames or quits communication.

Each baud rate shall last for at least 1 minute.

The DUT shall not send any Errorframes within the given tolerances:

Nominal bit rate in normal mode:

33.33 kbit/s ± 0.35 % = 33.33 kbit/s ± 0.117 kbit/s

It is highly desirable that the DUT tolerates bit time variations of up to ± 1.0 %.

33.33 kbit/s ± 1 % = 33.33 kbit/s ± 0.33 kbit/s

4.3.10.2.2.2 Tol of SWCAN BdRate Var Test2 Max Ld at Max Tau

Measure the baudrate vartions for Max Ld Max Tau

The DUT shall not send any Errorframes within the given tolerances:

Nominal bit rate in normal mode:

33.33 kbit/s ± 0.35 % = 33.33 kbit/s ± 0.117 kbit/s

It is highly desirable that the DUT tolerates bit time variations of up to ± 1.0 %.

33.33 kbit/s ± 1 % = 33.33 kbit/s ± 0.33 kbit/s

4.3.11.1 Test Immunity to ground potential offsets

Determine the immunity of the DUT to ground potential offsets.

Acceptance Criteria:

Determine at which ground offset level the first communication problems occur.

4.3.11.1.1 Test Immunity to Gnd Offst Mthd1

Expose the DUT to a ground offset level of 2.1 V maximum. Increase the ground offset starting at 0 V in steps of 0.1 V and check at which ground offset level the DUT stops communication or communication problems occur.

Acceptance Criteria:

Up to a ground offset of 1.3 V no communication problems and no error frames shall occur.

It is highly desirable that error free communication is possible up a level of 2.1 V. Determine at which ground offset level the first communication problems occur.

4.3.11.1.2 Test Immunity to Gnd Offst Mthd2

Expose the test tool to a ground offset level of 2.1 V maximum. Increase the ground

offset starting at 0 V in steps of 0.1 V and check at which ground offset level the DUT

stops communication or communication problems occu

Acceptance Criteria:

Up to a ground offset of 1.3 V no communication problems and no error frames shall occur.

It is highly desirable that error free communication is possible up a level of 2.1 V. Determine at which ground offset level the first communication problems occur.

4.3.11.2 Test Immunity To Battery offsets

Determine the immunity of the DUT regarding battery offsets.

Acceptance Criteria:

During the offsets the DUT shall be able to wake up after receiving a HVWU and shall be able to transmit a correct HVWU.

Up to a supply offset voltage of 1 V no communication problems (e.g. Errorframes) shall occur. It is highly desirable, that the DUT is able to communicate w/o any problems up to a battery offset of   1.9 V.

Determine at which battery offset level the first communication problems occur.

4.3.11.2.1 Test Immunity To Batt Offst Mthd1

Expose the DUT to battery offset levels of 2.0 V maximum. Check the behavior of the

DUT while receiving and transmitting a HVWU.

Increase the battery offset starting at 0 V in steps of 0.1 V and check at which battery

offset level the first communication problems occur.

Acceptance Criteria:

During the offsets the DUT shall be able to wake up after receiving a HVWU and shall be able to transmit a correct HVWU.

Up to a supply offset voltage of 1 V no communication problems (e.g. Errorframes) shall occur. It is highly desirable, that the DUT is able to communicate w/o any problems up to a battery offset of   1.9 V.

Determine at which battery offset level the first communication problems occur.

4.3.11.2.2 Test Immunity to Batt Offst Mthd2

Expose the test tool to battery offset levels of 2.0 V maximum. Check the behavior of the DUT in case of receiving and transmitting a HVWU.

Increase the battery offset starting at 0 V in steps of 0.1 V and check at which battery offset level the first  communication problems occur.

Add the CAN Trace and oscilloscope plots showing the CAN bus activity and the Supply voltage level, at different Battery Offset levels

Acceptance Criteria:

During the offsets the DUT shall be able to wake up after receiving a HVWU and shall be able to transmit a correct HVWU.

Up to a supply offset voltage of 1 V no communication problems (e.g. Errorframes) shall occur. It is highly desirable, that the DUT is able to communicate w/o any problems up to a battery offset of   1.9 V.

Determine at which battery offset level the first communication problems occur.

4.3.11.3 Loss of Power

Check the behavior of the DUT in case of an interruption of the power supply voltage connection.

Establish the bus communication. Disconnect the DUT from the power line.

Note: If the DUT has more than one Supply-connection, then all combinations of loss of power supply shall be tested

Acceptance Criteria:

In case of an interruption of the supply voltage connection the DUT shall not interfere with the bus communication

Upon return of power, normal operation shall resume without any operator intervention

4.3.11.3 Loss of Pwr

Check the behavior of the DUT in case of an interruption of the power supply voltage connection.

Establish the bus communication. Disconnect the DUT from the power line.

Note: If the DUT has more than one Supply-connection, then all combinations of loss of power supply shall be tested

Acceptance Criteria:

In case of an interruption of the supply voltage connection the DUT shall not interfere with the bus communication

Upon return of power, normal operation shall resume without any operator intervention

4.3.11.4 Temporary Loss of Power

Check the behavior of the DUT in case of a temporary interruption of the power supply voltage connection.

Establish the communication between the tester and the DUT. Disconnect the DUT from the power line

Acceptance Criteria:

After an interruption, the DUT shall not send any Error Frames and shall continue to transmit its messages without any delay

 

4.3.11.4 Temp Loss of Pwr 4ms

Disconnect the DUT from the power line for 4ms

Acceptance Criteria:

After an interruption of 4 ms, the DUT shall not send any Error Frames and shall continue to transmit its messages without any delay

4.3.11.4 Temp Loss of Pwr 1s

Disconnect the DUT from the power line for 1s

Acceptance Criteria:

After a temporary interruption of the supply voltage connection > 4 ms, the DUT shall start its communication kernel and keep it active for 8 s. The DUT shall rejoin the previously activated VN and shall transmit all its VN related frames within 300 ms after the disturbance is removed.

4.3.11.4 Temp Loss of Pwr 5s

Disconnect the DUT from the power line for 5s

Acceptance Criteria:

After a temporary interruption of the supply voltage connection > 4 ms, the DUT shall start its communication kernel and keep it active for 8 s. The DUT shall rejoin the previously activated VN and shall transmit all its VN related frames within 300 ms after the disturbance is removed

4.3.11.4 Temp Loss of Pwr 30s

Disconnect the DUT from the power line for 5s

Acceptance Criteria:

After a temporary interruption of the supply voltage connection > 4 ms, the DUT shall start its communication kernel and keep it active for 8 s. The DUT shall rejoin the previously activated VN and shall transmit all its VN related frames within 300 ms after the disturbance is removed

4.3.11.5 CAN wires short to ground

Check the behavior of the DUT in case of a short between the bus line and ground

Establish the bus communication. Create a short between the bus line and ground.

 

Acceptance Criteria:

The DUT shall not be damaged when the bus line is shorted to ground. After the

removal of the short, the DUT shall resume bus communication without any operator intervention

4.3.11.5 CAN wires shrt to gnd

Create a short between the bus line and ground.

 

Acceptance Criteria:

The DUT shall not be damaged when the bus line is shorted to ground. After the

removal of the short, the DUT shall resume bus communication without any operator intervention

4.3.11.6 CAN wires short to supply

Check the behavior of the DUT in case of a short between the bus line and the power supply line.

Establish the bus communication. Create a short between the bus line and the power supply line. Check the bus communication after the removal of the short.

Acceptance Criteria:

The DUT shall not be damaged in case that the CAN bus line is shorted to the power supply line.

 

4.3.11.6 CAN wires shrt to 12V

Create a short between the bus line and the power supply line at 12v

Acceptance Criteria:

the DUT shall not be damaged when the bus line is shorted to the power supply line

After the removal of the shortcut, the DUT shall resume with its bus communication without any operator intervention

4.3.11.6 CAN wires shrt to 18V

Create a short between the bus line and the power supply line at 18v

Acceptance Criteria:

the DUT shall not be damaged when the bus line is shorted to the power supply line

After the removal of the shortcut, the DUT shall resume with its bus communication without any operator intervention

4.3.11.6 CAN wires shrt to 26.5V

Create a short between the bus line and the power supply line at £ 26.5v for 1minute.

Acceptance Criteria:

the DUT shall not be damaged when the bus line is shorted to the power supply line

After the removal of the shortcut, the DUT shall resume with its bus communication without any operator intervention

4.3.11.7 Loss of Ground Connection

Check the behavior of the DUT in case of a lost ground connection. Connect the DUT to all of its I/Os. Then disconnect the DUT from ground. There is no communication on the bus.

If the DUT has more than one ground connection, then all combinations of loss of ground shall be tested

Acceptance Criteria

After the removal of the fault, the DUT shall resume bus communication without any operator intervention.

4.3.11.7.1 Loss of Gnd 3332ohms Scope1

Disconnect the DUT from ground at 3332W

Verify Vleak LOG

Acceptance Criteria:

Vleak LOG  value should be below range

-0.2 V £ Vleak LOG  £ 0.5 V.

After the removal of the fault, the DUT shall resume with its bus communication without any operator intervention

4.3.11.7.1 Loss of Gnd 200ohms Scope1

Disconnect the DUT from ground at 200W

Verify Vleak LOG

Acceptance Criteria:

Vleak LOG  value should be below range

-0.2 V £ Vleak LOG  £ 0.5 V.

After the removal of the fault, the DUT shall resume with its bus communication without any operator intervention

4.3.11.7.1 Loss of Gnd 75ohms Scope1

Disconnect the DUT from ground at 75W

Verify Vleak LOG

Acceptance Criteria:

Vleak LOG  value should be below range

-0.2 V £ Vleak LOG  £ 0.5 V.

After the removal of the fault, the DUT shall resume with its bus communication without any operator intervention

4.3.11.7.2 Loss of Gnd 3332ohms Scope2

Check the impact on the CAN-Bus of a lost ground connection of the DUT

The DUT is connected to all its I/Os. Establish CAN-Bus communication with at least 2 additional nodes (or CAN-Tools).

Then, disconnect the DUT from ground. Rload=3332 W

Acceptance Criteria:

After the DUT looses its ground connection the communication of the remaining CAN bus nodes/tools shall not be disturbed for more that 200 ms.

In addition the CAN-Bus voltage levels shall return to the specified voltages levels within 300 ms after the DUT looses its ground connection.

After the removal of the fault, the DUT shall resume with its bus communication without any operator intervention.

GMW14241 SWCAN TestCases

Normal Mode

High Speed Mode

Wake-Up Mode