Frequency Accuracy Adjustment - Agilent Technologies 8719ET Service Manual

8719ET/20ET/22ET
8719ES/20ES/22ES
RF Network Analyzers

Frequency Accuracy Adjustment

This adjustment sets the voltage controlled crystal oscillator (VCXO) frequency to
maintain the instrument's frequency accuracy.
Required Equipment and Tools
Equipment Description
Frequency Counter
RF cable
Non-metallic Adjustment Tool
Antistatic Wrist Strap
Antistatic Wrist Strap Cord
Static-control Table Mat and Earth
Ground Wire
Network Analyzer warmup time: 30 minutes.
1. Remove the upper corner standoffs and analyzer top cover.
2. Connect the equipment as shown in
IMPORTANT Make sure that the frequency counter and network analyzer references are
not connected.
Figure 3-8 Frequency Accuracy Adjustment Setup
Service Guide
8719ET/ES
8720ET/ES
53150A or 5350B
85131F 85133F
part number 8830-0024
part number 9300-1367
part number 9300-0980
part number 9300-0797
Figure 3-8.
Adjustments and Correction Constants
Frequency Accuracy Adjustment
8722ET/ES
53151A or 5351B
3- 41