5-34
690XXB/691XXB MM
YIG-tuned Oscillator
Error 124 Full Band Unlocked and Unleveled
Error 125 8.4-20 GHz Unlocked and Unleveled
Error 126 2-8.4 GHz Unlocked and Unleveled
Description: These error messages indicate a failure of the YIG-
tuned oscillator assembly.
Model 69017B/69117B YIG-tuned oscillator failure
Step 1.
Connect a 56100A Scalar Network Analyzer to the 69017B/
69117B as follows:
a. Connect the 69017B/69117B
AUX I/O
to the 56100A
AUX
I/O
.
b. Connect the 56100A
DEDICATED GPIB
to the 69017B/
69117B
IEEE-488 GPIB
.
c.
Connect the RF Detector to the 56100A Channel A In-
put.
Step 2.
Set up the 69017B/69117B as follows:
a. 69017B Setup:
CW/SWEEP SELECT: Step
F1: 2.000 GHz
F2: 8.400 GHz
Number of Steps: 400
69117B Setup:
CW/SWEEP SELECT: Analog
F1: 2.000 GHz
F2: 8.400 GHz
Sweep Time: 0.100 Sec
Step 3.
Set up the 56100A Scalar Network Analyzer as follows:
a. Press SYSTEM MENU key.
b. From System Menu display, select RESET.
c.
Press CHANNEL 2 DISPLAY: OFF
d. Press CHANNEL 1 DISPLAY: ON
e.
Press CHANNEL 1 MENU key.
f.
From the Channel 1 Menu display, select POWER.
Table 5-18.
Error Messages 124, 125, and 126 (1 of 4)
TROUBLESHOOTING
TROUBLESHOOTING
TABLES
Summary of Contents for 680 C Series
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