Digital I/O; Totalizer; Alarm/Trigger I/O Connections - Fluke NetDAQ 2640A User Manual

2640A/2645A NetDAQ
Users Manual
2. Loosen the wire clamp screw for the associated terminal.
3. Feed the wire into the gap between the connector body and the wire clamp.
4. Tighten the wire clamp; do not overtighten and crush the wire.
5. Repeat steps 2 through 4 for each wire.
6. Insert the connector in the rear panel.
0 I/O Line 0
1 I/O Line 1
2 I/O Line 2
3 I/O Line 3
4 I/O Line 4

Digital I/O

The Digital I/O lines use terminals 0 to 7 and GND. You can use these lines either
as signal inputs or as alarm outputs. See Table A-3 in Appendix A for complete
specifications.

Totalizer

The Totalizer uses terminals
voltage transitions with a maximum count of 4,294,967,295. See Table A-7 in
Appendix A for complete specifications.

Alarm/Trigger I/O Connections

To avoid damage to the instrument, do not apply any
voltages greater than 30V maximum between the
ALARM/TRIGGER I/O connector terminals and earth
ground.
The eight-terminal ALARM/TRIGGER I/O connector (Figure 2-6) on the rear
panel of the instrument provides connections to Trigger In (TI), Trigger Out (TO),
and Master Alarm (MA) I/O lines along with a common ground connection. (See
the "Trigger Input," "Trigger Output," and "Master Alarm Output" discussions in
Chapter 1 for additional information.) The dc power connection is also on this
connector. (See "DC Power" above.).
2-12
5 I/O Line 5
6 I/O Line 6
7 I/O Line 7
Totalizer Input
Signal Ground
Figure 2-5. DIGITAL I/O Connector
and GND. The Totalizer counts contact closures or
P

DIGITAL I/O

0 1 2 3 4 5
Caution
6 7
2-13.
2-14.
2-15.