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USB-2020 User's Guide
Signal I/O connectors
Connector
USB
Auxiliary connector (J9)
Compatible cables for the 40-pin
auxiliary connector
Compatible accessory products with
the C40FF-x cable
Compatible accessory products with
the C40-37F-x cable
BNC connectors
BNC signal name
CH0
CH1
TRIG IN
CLK IO
Also available on the auxiliary connector J9.
Note 4:
Auxiliary connector
Pin
Signal name
1
GND
3
GND
5
DIO7
7
DIO6
9
DIO5
11
DIO4
13
DIO3
15
DIO2
17
DIO1
19
DIO0
21
GND
23
N/C
25
GND
27
N/C
29
GND
31
N/C
33
GND
35
+VO
37
GND
39
N/C
N/C = no connection, not used
Note 5:
Table 13. Connector specifications
Specification
B type
40-pin header connector
C40FF-x
C40-37F-x
CIO-MINI40
CIO-MINI37
SCB-37
Table 14. BNC connector pinout
Signal description
Analog input channel 0
Analog input channel 1
BNC connection for external digital trigger (Note 4)
BNC connection for the ADC clock input/output, software-selectable for input or
output (default is input)
Table 15. 40-pin connector J9 pinout
Pin description
Pin
Ground
2
Ground
4
Digital I/O bit 7
6
Digital I/O bit 6
8
Digital I/O bit 5
10
Digital I/O bit 4
12
Digital I/O bit 3
14
Digital I/O bit 2
16
Digital I/O bit 1
18
Digital I/O bit 0
20
Ground
22
Do not connect
24
Ground
26
Do not connect
28
Ground
30
Do not connect
32
Ground
34
Power output
36
Ground
38
Do not connect
40
23
Signal name
Pin description
+VO
Power output
N/C
Do not connect
N/C
Do not connect
N/C
Do not connect
TRIG IN
External digital trigger input
GND
Ground
GND
Ground
GND
Ground
GND
Ground
GND
Ground
N/C
Do not connect
N/C
Do not connect
N/C
Do not connect
N/C
Do not connect
N/C
Do not connect
N/C
Do not connect
N/C
Do not connect
N/C
Do not connect
N/C
Do not connect
N/C
Do not connect
Specifications
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