Chapter 13 561
Softkey Descriptions
Softkey Descriptions
−10 V REF DETECTOR −10 V Reference
Detector
DESCRIPTION Displays the output of the −10 V reference from the A7
analog interface assembly as horizontal line at the
bottom graticule.
Refer to Chapter 4 for additional troubleshooting
information.
R
ELATED SOFTKEYS +10 V REF DETECTOR
2v REF DETECTOR 2 V Reference Detector
DESCRIPTION Displays the output of the 2 V reference produced on
the A16 processor/video assembly as a horizontal line at
the top graticule. If the line is at the top graticule, the
main ADC is adjusted correctly.
This routine uses the 2 V reference at the input MUX
on the A16 assembly. Refer to Foldout 6-2, IF/Control
Overall Block Diagram, for the location of the input
MUX.
Note that during the preset routine, the analog-ground
and 2 V reference are used to calibrate the main ADC.
The analog ground and 2 V reference at the input MUX
are used during calibration. If either signal is out of
range, the ADC-GND FAIL or ADC-2V FAIL error
message is displayed.
R
ELATED SOFTKEYS CAL AMPTD
ALC TEST Automatic Level Control TEST
DESCRIPTION Note that this function is available for analyzers
equipped with Option 010, 50Ω Output Tracking
Generator, and Option 011, 75Ω Output Tracking
Generator, only.
ALC TEST breaks the leveling loop for the automatic
level control in the tracking generator.
Refer to the modular offset and gain adjustment
procedures in Chapter 2 for information on the use of
ALC TEST.
To Next Page
Loading...
Need help?
General
