Anritsu 37 D Series, Maintenance Manual

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Avoid Over Torquing
Connectors
Over-torquing connectors is destructive; it may damage the connector
center pin. Finger-tight is usually sufficient, especially on Type N con-
nectors. Should it be necessary to use a wrench to tighten SMA or
WSMA connectors, use a torque wrench that breaks at 8 inch-pounds.
As a general rule, never use pliers to tighten connectors.
Teflon Tuning
Washers
The center conductor on many precision connectors contains a small
teflon tuning washer located near the point of mating (interface). This
washer compensates for minor impedance discontinuities at the inter-
face. The washer’s location is critical to the connector’s performance.
Do not disturb it.
Avoid Mechanical
Shock
Precision connectors are designed to withstand years of normal bench
handling. Do not drop or otherwise treat them roughly. They are labo-
ratory-quality devices, and like other such devices, they require careful
handling.
Keep Connectors
Clean
The precise geometry that makes a precision connector’s high perfor-
mance possible can be disturbed by dirt and other contamination ad-
hering to connector interfaces. When not in use, keep the connectors
covered.
Visual Inspection Precision connectors should be inspected periodically. Check for the
following:
q
Bent or broken center pin
q
Damaged threads
q Other bent or damaged connector parts
q Dirt or foreign material in connector cavity.
A-3
REPAIR/MAINTENANCE Anritsu recommends that no maintenance other than cleaning be at-
tempted by the customer. Any device with a suspected defective con-
nector should be returned to Anritsu for repair and/or service when
needed.
37XXXD MM A-5/A-6
APPENDIX A REPAIR/MAINTENANCE