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Chapter 3 Signal Connections
©
National Instruments Corporation 3-3 BNC-2140 User Manual
Figure 3-1 describes the pin connections on the BNC-2140 68-pin
connector.
Figure 3-1. BNC-2140 External 68-Pin Analog Connector
DGND
+5 V
NC
NC
NC
NC
AOGND
–DAC1OUT
AOGND
–DAC0OUT
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
AIGND
–ACH3
AIGND
–ACH2
AIGND
–ACH1
AIGND
–ACH0
DGND
NC
NC
NC
AOGND
+DAC1OUT
AOGND
+5 V
NC
+DAC0OUT
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
AIGND
+ACH3
AIGND
+ACH2
AIGND
+ACH1
AIGND
+ACH0
135
236
337
438
539
640
741
842
943
10 44
11 45
12 46
13 47
14 48
15 49
16 50
17 51
18 52
19 53
20 54
21 55
22 56
23 57
24 58
25 59
26 60
27 61
28 62
29 63
30 64
31 65
32 66
33 67
34 68
These AIGND and AOGND pins are not connected in the SHC6868-A1 cable
UM.book Page 3 Tuesday, July 14, 1998 10:37 AM