I/O Connector Signal Descriptions - National Instruments 6527 User Manual

I/O Connector Signal Descriptions

Pin Signal Name
33, 35, 37, 39, DIG+0.<7..0>
41, 43, 45, 47
34, 36, 38, 40, DIG–0.<7..0>
42, 44, 46, 48
17, 19, 21, 23, DIG+1.<7..0>
25, 27, 29, 31
18, 20, 22, 24, DIG–1.<7..0>
26, 28, 30, 32
1, 3, 5, 7, 9, DIG+2.<7..0>
11, 13, 15
2, 4, 6, 8, 10, DIG–2.<7..0>
12, 14, 16
49, 99 +5 V
50, 100 GND
© National Instruments Corporation
Table 3-2. Signal Descriptions for 6527 I/O Connector Pins
Isolated input port 0, positive terminals—Take measurements
at these terminals. These terminals should be positive relative
to their corresponding DIG– lines. A logic high (data bit of 1)
indicates input voltage and current are present.
Isolated input port 0, negative terminals—Each of these
terminals serves as the reference terminal from which the
corresponding DIG+ line is measured. A logic high (data bit
of 1) indicates input voltage and current are present.
Isolated input port 1, positive terminals—Take measurements
at these terminals. These terminals should be positive relative
to their corresponding DIG– lines. A logic high (data bit of 1)
indicates input voltage and current are present.
Isolated input port 1, negative terminals—Each of these
terminals serves as the reference terminal from which the
corresponding DIG+ line is measured. A logic high (data bit
of 1) indicates input voltage and current are present.
Isolated input port 2, positive terminals—Take measurements
at these terminals. These terminals should be positive relative
to their corresponding DIG– lines. A logic high (data bit of 1)
indicates input voltage and current are present.
Isolated input port 2, negative terminals—Each of these
terminals serves as the reference terminal from which the
corresponding DIG+ line is measured. A logic high (data bit
of 1) indicates input voltage and current are present.
+5 Volts—These pins are fused for up to 1 A total of +4.5
to +5.25 V from the computer power supply. These pins are
not isolated.
Ground—These pins are connected to the computer ground
reference. These pins are not isolated.
Chapter 3
Description
3-5
Making Signal Connections
6527 User Manual