NI Digital Multimeters Getting Started Guide 24 ni.com
The banana plug connectors are high-voltage, safety signal connectors. The 9-pin connector labeled
AUX I/O is a digital signal connector, which carries TTL-level triggering signals for use with external
scanning equipment. Refer to the NI Digital Multimeters Help, located at Start»All Programs»
National Instruments»NI-DMM»Documentation»NI Digital Multimeters Help, for information
about scanning.
Note The AUX I/O connector is not isolated. It is not referenced to your measurement circuit. The
connector is referenced to the ground of your computer. The digital signals on this connector should
not operate beyond –0.5 to 5.5 V of your computer ground. The trigger signals are TTL-compatible.
PCMCIA
Caution To measure current with the NI PCMCIA-4050, you must use a current shunt module.
Refer to the 8. Connecting Signals section of this document for more information.
An accessory cable connects the NI PCMCIA-4050 to a pair of test probes equipped with shrouded
banana plugs. Both the accessory cable and the test probes ship with the NI PCMCIA-4050. The
accessory cable connector is polarized and cannot be plugged in incorrectly.
Refer to Figure 21 to connect the accessory cable to the NI PCMCIA-4050.
Figure 21. Connecting Cables and Probes to the NI PCMCIA-4050
1 Laptop Computer
2 PCMCIA Slot
3 Test Probes
4 Accessory Cable
5 NI PCMCIA-4050
2
3
5
4
1
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