Measurement Computing USB-2416 - Manual (Page 43)

USB-2416 User's Guide Specifications
43
Optional AI-EXP32 expansion module
Use the AI-EXP32 (sold separately) for applications that need additional analog/thermocouple input and digital
I/O channels. See Measurement Computing web site for product details.
The AI-EXP32 expansion port is intended to interface with a USB-2416 series product. Do not try to use any of
the expansion port pins for any other purpose.
Table 34. AI-EXP32 37-pin connector pinout
Do not connect to terminal block pins labeled "NC."
Pin Signal name Pin description
1 GND Analog ground
2 NC No connect
3 GND Analog ground
4 NC No connect
5 GND Analog ground
6 VCC +12 V power
7 NC No connect
8 NC No connect
9 IM_A2 I/O control signal
10 IM_A1 I/O control signal
11 IM_A0 I/O control signal
12 IMEN10 I/O control signal
13 IMEN9 I/O control signal
14 IMEN8 I/O control signal
15 IMEN7 I/O control signal
16 DIO_LOAD2 I/O control signal
17 DIO_LOAD1 I/O control signal
18 NC No connect
19 NC No connect
20 +3.3V_ISO +3.3 V power
21 GND Analog ground
22 +5 VA +5 V analog power
23 +20.5V +20.5 V power
24 GND Analog ground
25 -20.5V -20.5 V power
26 VDD_ISO +5 V digital power
27 EXTDIO_INT I/O control signal
28 CM_A3 I/O control signal
29 SM_A1 I/O control signal
30 SM_AO I/O control signal
31 CM_A2 I/O control signal
32 SCL Serial I/O control signal
33 SDA Serial I/O control signal
34 MOSI Serial I/O control signal
35 SCK Serial I/O control signal
36 NC No connect
37 NC No connect
The multiple-channel throughput rate calculation is based on the following formula:
Maximum throughput = , where n is the number of channels