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Adjustments
WFM90D and WFM91D Service Manual
5-3
Adjustment Procedures
The monitor does not have any internal adjustments. All adjustments are made
through the Calibration menu using the front panel buttons.
The adjustment procedure steps are sequential. If you are unsure of equipment
connections or front-panel settings for a specific step, review the settings and
connections for the previous step.
Throughout these procedures, boldface type indicates that you will use a
front-panel control or select a specific menu item on the WFM90D or WFM91D.
The adjustments in this section provide a valid adjustment of instrument
performance when the following requirements are met:
H Test equipment used to verify performance requirements must be calibrated
and working within the limits specified in Table 5--2 on page 5--2.
H The WFM90D or WFM91D must have been adjusted at an ambient
temperature range of +20° Cto+30° C, and must have been operating for a
warm-up period of at least 20 minutes.
NOTE. Use only the front-panel settings described in the procedure steps. If you
deviate from these settings, you may incorrectly adjust your instrument.
1. Press and hold the CONFIG button for three seconds to enter the Calibration
menu. The menu allows either analog or serial digital adjustments, depend-
ing on which input signal is connected. The menu lists the adjustments you
can make (CAL MENU list), and displays the CAL and SAVE selections.
2. Use the arrow buttons to highlight the desired adjustment in the list and then
select CAL to begin this adjustment.
3. Use the arrow buttons to adjust the setting. Most adjustments provide a POS
(position) or PHASE menu selection, which allows you to toggle the arrow
buttons between the selected adjustment and signal positioning.
NOTE. Select SAVE from the Calibration menu after completing an adjustment. If
you do not save an adjustment, the instrument will revert to the previous setting
at next instrument pow er-up.
4. Select SAVE to save the adjustment in memory.
5. Select CAL MENU to return the display to the main Calibration menu.
Conventions
Prerequisites
How to Adjust Instrument
Settings