3-16 85054B
Use, Maintenance, and Care of the Devices
Connections

Connections

Good connecti ons requi re a ski lled op erator. The most com mon caus e of me asu reme n t erro r
is bad connections. The following procedures illustrate how to make good connections.

How to Make a Connection

Preliminary Connection
1. Ground yourself and all devices. Wear a grounded wrist s trap and work on a grounded,
conductive table mat. Refer to “Electrostatic Discharge” on page 3-2 for ES D
precautions.
2. Visually inspec t the connectors. Refer to “Visua l Insp ect ion” on page 3-3.
3. If necessary, clean the connectors. Refer to “Cleaning Connectors” on page 3-4.
4. Use a connector gage to verify that all center conductors are within the ob served pin
depth values in Table 2-2 on pa ge 2-4. Refer to “Gaging Connectors” on page 3-6.
5. Carefully align the connectors. The m ale connector center pin must slip concentrically
into the contact finger of the female connector.
6. Push the connectors str aight together.
CAUTION Do not turn the device bod y. Only turn the c onnector nut. Dam age to the
center conductor c an occur if the device body is twisted.
Do not twist or screw the c onnectors together. As the center conductors mate, there is
usually a slight resistance.
7. The preliminary connection is tight enough when the mating plane surfaces make
uniform, light contact. D o not overtighten this connection.
A connection in which the outer conductors make gentle contact at all p oints on both
mating surf aces is sufficient. Very light finger pressure is enough to accomplish this.
8. Make sure the connectors are properly supported. Relieve any side pressure on the
connection from long or heavy devices or cables.
Final Co nnection Using a Torque Wrench
Use a torque wrench to make a final connection. T able 3-1 provides information about the
torque wrench recomm ended for use with this calibration kit. A torq ue wrench is not
inc luded in the calibrat ion kit. Refer to Chapter 6 “Repl aceable P arts” for part number and
ordering i n fo rmatio n .
Table 3-1 Torque Wrench Information
Connector Type Torque Sett ing Torque Tolerance
Type-N 135 N-cm (12 in- lb) ±13.5 N-cm (±1.2 in-lb)