Test Name |
Test Description |
Observation |
---|---|---|
4.3.2.3 Signal Voltage Level in Wake Up Mode |
Measure the CAN bus output signal voltage levels in wakeup mode over the complete battery power voltage range. Check whether the voltage levels meet the requirements. Measure the absolute voltage level on the CAN Bus line for each of the following battery voltage levels: 6.0 V, 6.5 V, 7.0 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 be applied for at least 1 minute. Add the oscilloscope plots to the test report displaying CAN line. |
Verify VohWu AcceptanceCriteria: VohWu should be below range Min Vbatt - 2.7 Max Vbatt |
Signal Vtg Lvl in Wake Up Mode 6V |
Measure the absolute voltage level on the CAN Bus line for 6.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 3.3 V £ VohWu £ Vbatt |
Signal Vtg Lvl in Wake Up Mode 6.5V |
Measure the absolute voltage level on the CAN Bus line for 6.5V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 3.8 V £ VohWu £ Vbatt |
Signal Vtg Lvl in Wake Up Mode 7V |
Measure the absolute voltage level on the CAN Bus line for 7.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 4.3 V £ VohWu £ Vbatt |
Signal Vtg Lvl in Wake Up Mode 8V |
Measure the absolute voltage level on the CAN Bus line for 8.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 5.3 V £ VohWu £ Vbatt |
Signal Vtg Lvl in Wake Up Mode 9V |
Measure the absolute voltage level on the CAN Bus line for 9.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 6.3 V £ VohWu £ Vbatt |
Signal Vtg Lvl in Wake Up Mode 10V |
Measure the absolute voltage level on the CAN Bus line for 10.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 7.3 V £ VohWu £ Vbatt |
Signal Vtg Lvl in Wake Up Mode 11V |
Measure the absolute voltage level on the CAN Bus line for 11.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 8.3 V £ VohWu £ Vbatt |
Signal Vtg Lvl in Wake Up Mode 12V |
Measure the absolute voltage level on the CAN Bus line for 12.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 9.3 V £ VohWu £ Vbatt |
Signal Vtg Lvl in Wake Up Mode 13V |
Measure the absolute voltage level on the CAN Bus line for 13.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 9.3 V £ VohWu £ 13v |
Signal Vtg Lvl in Wake Up Mode 14V |
Measure the absolute voltage level on the CAN Bus line for 14.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 9.3 V £ VohWu £ 13v |
Signal Vtg Lvl in Wake Up Mode 15V |
Measure the absolute voltage level on the CAN Bus line for 15.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 9.3 V £ VohWu £ 13v |
Signal Vtg Lvl in Wake Up Mode 16V |
Measure the absolute voltage level on the CAN Bus line for 16.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 9.3 V £ VohWu £ 13v |
Signal Vtg Lvl in Wake Up Mode 18V |
Measure the absolute voltage level on the CAN Bus line for 18.0V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 9.3 V £ VohWu £ 13v |
Signal Vtg Lvl in Wake Up Mode 26.5V |
Measure the absolute voltage level on the CAN Bus line for 26.5V |
Verify VohWu AcceptanceCriteria: VohWu should be below range 9.3 V £ VohWu £ 13v |
4.3.3.3 Recessive or Passive State Low Voltage In Wakeup |
Measure the CAN bus output signal voltage levels in wake-up mode under the complete battery power voltage range (6.0 to 26.5) V. Check whether the voltage levels meet the requirements. 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. |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 6V |
Measure the recessive voltage level on the CAN Bus line for 6.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 6.5V |
Measure the recessive voltage level on the CAN Bus line for 6.5V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 7V |
Measure the recessive voltage level on the CAN Bus line for 7.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 8V |
Measure the recessive voltage level on the CAN Bus line for 8.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 9V |
Measure the recessive voltage level on the CAN Bus line for 9.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 10V |
Measure the recessive voltage level on the CAN Bus line for 10.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 11V |
Measure the recessive voltage level on the CAN Bus line for 11.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 12V |
Measure the recessive voltage level on the CAN Bus line for 12.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 13V |
Measure the recessive voltage level on the CAN Bus line for 13.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 14V |
Measure the recessive voltage level on the CAN Bus line for 14.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 15V |
Measure the recessive voltage level on the CAN Bus line for 15.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 16V |
Measure the recessive voltage level on the CAN Bus line for 16.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 18V |
Measure the recessive voltage level on the CAN Bus line for 18.0V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 V |
Rec or Passive State Low Vtg in Wakeup 26.5V |
Measure the recessive voltage level on the CAN Bus line for 26.5V |
Verify Vleaknorm AcceptanceCriteria: Vleaknorm should be below range -0.2 V £ Vleaknorm £ 0.2 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: Wake-up at 0.35 % clock tolerance Minimum Maximum Risetime 1.5μs 4.73μs Fall Time 1.35μs 10.5 μs Wake-up at 0.5 % clock tolerance Minimum Maximum Risetime 1.5μs 4.73μs Fall Time 1.35μs 9.53 μs |
4.3.7.1.2.1 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: Wake-up at 0.35 % clock tolerance Minimum Maximum Risetime 1.5μs 4.73μs Fall Time 1.35μs 10.5 μs Wake-up at 0.5 % clock tolerance Minimum Maximum Risetime 1.5μs 4.73μs Fall Time 1.35μs 9.53 μs |
4.3.7.1.2.1 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: Wake-up at 0.35 % clock tolerance Minimum Maximum Risetime 1.5μs 4.73μs Fall Time 1.35μs 10.5 μs Wake-up at 0.5 % clock tolerance Minimum Maximum Risetime 1.5μs 4.73μs Fall Time 1.35μs 9.53 μs |
4.3.7.1.2.2 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: Wake-up at 0.35 % clock tolerance Minimum Maximum Risetime 1.5μs 4.73μs Fall Time 1.35μs 10.5 μs Wake-up at 0.5 % clock tolerance Minimum Maximum Risetime 1.5μs 4.73μs Fall Time 1.35μs 9.53 μs |
4.3.7.1.2.2 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: Wake-up at 0.35 % clock tolerance Minimum Maximum Risetime 1.5μs 4.73μs Fall Time 1.35μs 10.5 μs Wake-up at 0.5 % clock tolerance Minimum Maximum Risetime 1.5μs 4.73μs Fall Time 1.35μs 9.53 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.
|
4.3.9.2.1 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.
|
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.
|
4.3.9.2.2 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.
|
4.3.9.2.2 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 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. |
4.3.10.1.2.1 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. |
4.3.10.1.2.2 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. |
4.3.10.1.2.3 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. |
4.3.10.1.2.4 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. |
GMW14241 SWCAN TestCases