Measurement Computing USB-2527 - Manual (Page 18)

USB-2527 User's Guide Installing the USB-2527
18
Digital ports, counters, timers, DACs, triggers, and pacer clocks pin out (J7 and J8)
You can use the 40-pin connector headers labeled J7 and J8 to connect digital ports, counters, timers, DACs,
triggers, pacer clocks, and other signals.
USB-2527 40-pin header connectors pin out (labeled J7 and J8)
Digital channel Pin J7 Pin Digital channel Signal Pin J8 Pin Signal
GND 1 2 XAPCR +13 V 1 2 -13 V
A0 3 4 A4 NC 3 4 NC
A1 5 6 A5 AGND 5 6 AGND
A2 7 8 A6 XDAC0 7 8 XDAC2
A3 9 10 A7 XDAC1 9 10 XDAC3
GND 11 12 TTL TRG AGND 11 12 AGND
B0 13 14 B4 SelfCal 13 14 SGND
B1 15 16 B5 AGND 15 16 AGND
B2 17 18 B6 TTL TRG 17 18 XDPCR
B3 19 20 B7 XAPCR 19 20 GND (digital)
GND 21 22 +5 V GND (digital) 21 22 GND (digital)
C0 23 24 C4 NC 23 24 NC
C1 25 26 C5 +5 V 25 26 AUX PWR
C2 27 28 C6 NC 27 28 NC
C3 29 30 C7 NC 29 30 NC
GND 31 32 TMR1 NC 31 32 NC
TMR0 33 34 CNT1 NC 33 34 NC
CNT0 35 36 CNT3 NC 35 36 NC
CNT2 37 38 GND NC 37 38 NC
GND 39 40 GND NC 39 40 NC