TOS9300_SIGNAL I/O Connector
| SIGNAL I/O |
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| Pin no. | IN/OUT | Signal name | Description |
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| 1 | IN | INTERLOCK+ | Activate/release interlock. |
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| 2 | – | COM | Circuit common (chassis potential) shared by input and output. |
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| 3 | IN | PM0 | Select setup memories and auto test program memories. |
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| 4 | IN | PM1 |
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| 5 | IN | PM2 |
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| 6 | IN | PM3 |
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| 7 | IN | PM4 |
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| 8 | IN | PM5 |
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| 9 | IN | PM6 |
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| 10 | IN | PM7 |
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| 11 | IN | STB | Recall setup memories and programs selected with the PM0 to PM7 signals. |
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| 12 | – | Reserved | Not used. |
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| 13 | – | Reserved |
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| 14 | – | Reserved |
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| 15 | IN | START | Start a test. |
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| 16 | IN | STOP | Stop a test. |
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| 17 | IN | ENABLE | Enable the START signal. |
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| 18 | – | COM | I/O circuit common (chassis potential). |
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| 19 | IN | INTERLOCK- | Activate/release interlock. |
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| 20 | – | COM | I/O circuit common (chassis potential). |
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| 21 | – | +24V | +24 V internal power supply output terminal. Maximum output current 100 mA. |
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| 22 | OUT | H.V ON/LINE ON | Set to on in any of the following conditions. Testing. Auto testing. Voltage remaining across the output terminals. Power being supplied to the EUT from the TOS9303LC through AC LINE OUT. |
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| 23 | OUT | RISE | Set to on when the voltage is rising. |
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| 24 | OUT | TEST | Set to on during test time. |
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| 25 | OUT | PASS | Set to on for the duration of time specified by Pass Hold when a PASS judgment is made. |
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| 26 | OUT | U FAIL | Set to on continuously when a U-FAIL judgment is made. Or set to on continuously along with the L FAIL signal when CONTACT FAIL judgment is made when a scanner is connected. |
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| 27 | OUT | L FAIL | Set to on continuously when an L-FAIL judgment is made. Or set to on continuously along with the U FAIL signal when CONTACT FAIL judgment is made when a scanner is connected. |
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| 28 | – | Reserved | Not used. |
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| 29 | OUT | READY | Set to on when the product is ready to start a test. |
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| 30 | OUT | PROTECTION | Set to on when a protection function is activated. |
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| 31 | OUT | STEP END | Set to on when each step ends during an auto test. |
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| 32 | OUT | CYCLE END | Set to on when the last step ends during an auto test. |
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| 33 | OUT | ACW | Set to on when the test mode is set to AC withstanding voltage test. |
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| 34 | OUT | DCW | Set to on when the test mode is set to DC withstanding voltage test. |
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| 35 | OUT | IR | Set to on when the test mode is set to insulation resistance test. |
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| 36 | OUT | EC | Set to on when the test mode is set to earth continuity test. |
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| 37 | OUT | LC | Set to on when the test mode is set to touch current test or protective conductor test. |
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