National Instruments NI 9924 Bedienungsanleitung

USER GUIDE AND SPECIFICATIONS

NI 9924

25-Pin DSUB to Screw-Terminal Connector Block

ni.com/manuals

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2|ni.com |NI 9924 User Guide and Specifications

This user guide describes the features of the National Instruments 9924

DSUB to Screw-Terminal Connector Block. You can use the NI 9924 to

create custom cables for C Series modules that use 25-pin DSUB

connectors.

Caution Do not remove the NI 9924 circuit board from

the enclosure.

Caution Do not supply hazardous voltages

(>30 Vrms/42 Vpk/60 VDC) to the NI 9924.

Caution Before using the NI 9924, read the Operating

Instructions and Specifications for the C Series module to

ensure compliance with safety, EMC, and environmental

regulations.

NI 9924 User Guide and Specifications |© National Instruments |3

Connecting the NI 9924

The NI 9924 provides connections for C Series 25-pin DSUB

modules.

Figure 1. NI 9924 Terminal Assignments

Pin 14

Pin 13Pin 25

Pin 1

4|ni.com |NI 9924 User Guide and Specifications

Connecting the Signals

To wire the NI 9924, complete the following steps while referring

to Figure 2.

Note When using shielded wires or cable, use the

SH terminal on the NI 9924 to terminate the shields.

1. Loosen the captive screws and remove the top cover.

2. Prepare the screw-terminal wire by stripping the insulation.

Refer to the Specifications section for more information on

screw-terminal wiring.

3. Insert the stripped end of the wire fully into the appropriate

terminal. Make sure no exposed wire extends past the screw

terminal.

4. Secure the connection by tightening the screw for the terminal.

Refer to the Specifications section for information on

screw-terminal torque.

5. Route the wire to the NI 9924 opening.

6. Remove slack in the NI 9924 wiring and secure the wires or

cable by threading a zip tie through the two strain relief holes

on the NI 9924 opening.

NI 9924 User Guide and Specifications |© National Instruments |5

7. Reinstall the top cover on the NI 9924 and tighten the four

captive screws.

Figure 2. NI 9924 Parts Locator Diagram

1 Captive Screws

2 Top Cover

3 Terminals

4 Strain Relief Holes

5 Jackscrews

6|ni.com |NI 9924 User Guide and Specifications

Installing the NI 9924

Connect the NI 9924 to the 25-pin DSUB connector on the module

as shown in Figure 2. Tighten the two jackscrews on the NI 9924

to hold it securely in place. Do not overtighten the jackscrews.

Refer to Figure 2 for the location of the jackscrews.

Figure 3. Installing the NI 9924

NI 9924 User Guide and Specifications |© National Instruments |7

Specifications

The following specifications are typical unless otherwise noted.

Maximum voltage............................. 30 Vrms/42 Vpk/60 VDC

Operating temperature ...................... –40 to 70 °C

Maximum current rating................... ≤1 A per channel

Screw-terminal wiring ...................... 16 to 26 AWG copper

conductor wire with 4.5 mm

(0.18 in.) of insulation

stripped from the end

Torque for screw terminals ............... 0.4 N · m max

(3.4 lb · in. max)

Weight............................................... 65 g (2.29 oz)

375924B-01 Apr12

LabVIEW, National Instruments, NI, ni.com, the National Instruments corporate logo, and the Eagle logo are

trademarks of National Instruments Corporation. Refer to the Trademark Information at ni.com/trademarks

for other National Instruments trademarks. Other product and company names mentioned herein are trademarks or

trade names of their respective companies. For patents covering National Instruments products/technology, refer

to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the

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ni.com/legal/export-compliance for the National Instruments global trade compliance policy and

how to obtain relevant HTS codes, ECCNs, and other import/export data.

Where to Go for Support

The National Instruments Web site is your complete resource for

technical support. At ni.com/support you have access to

everything from troubleshooting and application development

self-help resources to email and phone assistance from

NI Application Engineers.

National Instruments corporate headquarters is located at

11500 North Mopac Expressway, Austin, Texas, 78759-3504.

National Instruments also has offices located around the world to

help address your support needs. For telephone support in the

United States, create your service request at ni.com/support and

follow the calling instructions or dial 512 795 8248. For telephone

support outside the United States, visit the Worldwide Offices

section of ni.com/niglobal to access the branch office Web

sites, which provide up-to-date contact information, support phone

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