Identify The Stuck Key - Agilent Technologies 8719ET Service Manual

Digital Control Troubleshooting
Front Panel Troubleshooting (A1/A2)

Identify the Stuck Key

Match the front panel LED pattern with the patterns in
identifies the stuck key. Free the stuck key or replace the front panel part causing the
problem. (The Chan 3 and Chan 4 LEDs are not used.
accessory that can be set up through a rear panel port.)
Table 6-1 Front-Panel Key Codes
Decimal
Number
Chan 1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
6-14
LED Pattern
Chan 2 R L
RF Network Analyzers
Table 6-1. The LED pattern
= LED is on. The footswitch is an
Key
T S
G/n
9
M/µ
6
k/m
3
x1
−
8
7
5
4
2
1
.
0
Footswitch
←
Local
System
Seq
8719ET/20ET/22ET
8719ES/20ES/22ES
Service Guide