Appendix A APG & System Stauts Pin Assignment
Appendix A
APG & System Status Pin
Assignment
The 20-pin horizontal socket connector is located at rear panel in green.
PIN NO.
PIN Definition
PIN NO.
PIN Definition
1 +12VAPI
11
_FAULT
2 APIGND
12
TTL0
3 AVO_SET 13
TTL1
4 AIO_SET
14
TTL2
5 AVO_MEAS 15
TTL3
6 AIO_MEAS 16
TTL4
7 N.C.
17
TTL5
8 EXT.
TRIGGER
18
TTL6
9 _INHIBIT
19
TTL7
10 DC_ON
20
DGND
(1) PIN 1: 12V auxiliary power; see section 3.3.1.3.
(2) PIN 2: Ground of 12V auxiliary power; see section 3.3.1.3.
(3) PIN 3: Voltage programming; see section 3.3.1.3.
(4) PIN 4: Current programming; see section 3.3.1.3.
(5) PIN 5: Voltage measurement; see section 3.3.1.3.
(6) PIN 6: Current measurement; see section 3.3.1.3.
(7) PIN 7: Null.
(8) PIN 8: External trigger signal of Program mode; see section 4.2.2.3.
(9) PIN 9: When the voltage level of this pin turns to LOW, it inhibits the output of DC
Power Supply. It equals to press “
OUTPUT
” on the front panel which means to set
OUTPUT = OFF.
(10) PIN 10: When the DC Power Supply outputs voltage that is OUTPUT = ON, this pin
turns to HIGH. It will turn to LOW when quits output that is OUTPUT =
OFF.
(11) PIN 11: When protection occurs as described in section 3.3.5, this will turn to LOW.
(12) PIN 12: Bit 0 of TTL signal output; see section 3.2.2.5 for detail setting.
(13) PIN 13: Bit 1 of TTL signal output; see section 3.2.2.5 for detail setting.
(14) PIN 14: Bit 2 of TTL signal output; see section 3.2.2.5 for detail setting.
(15) PIN 15: Bit 3 of TTL signal output; see section 3.2.2.5 for detail setting.
(16) PIN 16: Bit 4 of TTL signal output; see section 3.2.2.5 for detail setting.
(17) PIN 17: Bit 5 of TTL signal output; see section 3.2.2.5 for detail setting.
(18) PIN 18: Bit 6 of TTL signal output; see section 3.2.2.5 for detail setting.
(19) PIN 19: Bit 7 of TTL signal output; see section 3.2.2.5 for detail setting.
(20) PIN 20: Ground of TTL (digital) signal.
A-1
