Operation and Service Guide Agilent Technologies 8648A/B/C/D ...

Operation
Quick Overview
4. Increment Set Keys
When you press a FUNCTION key, that function becomes the active function. Press INCR
SET to view or change the increment value for the active function. Press ~ or ~ at any time
to change the active function setting by the increment value. (If Option lEP is present and
the signal generator is in the ENCODER mode, these keys have alternate functions.)
If Option lEP is present and the signal generator is in the ENCODER mode, the INCR SET
key functions as a START/STOP key. This key starts or stops any pager encoding activity.
In addition, in this mode, the ~ and ~ function as PREY and NEXT keys. These keys let
you move the blinking cursor between each parameter when you are entering the pager
encoding settings.
5. Knobs
The knobs are always active when the instrument is in local (front panel) control. Turn
them to increase or decrease the frequency or the amplitude of the RF output. Press e= or
~, next to each knob, to adjust the knobs resolution.
Press REF SET, next to each knob, to set the displayed value as the reference value and
turn on the reference mode. Press REFON/OFF to turn on and off the reference mode
without changing the reference value. When the reference mode is on, the displayed value
indicates the offset between the reference value and the RF output signal.
If Option lEP is present and the signal generator is in the ENCODER mode, the
AMPLlTUDE/ENCODER knob is used to enter a setting for a pager encoding parameter.
6. MEMORY
memory registers allow you to save instrument setups and recall them whenever you wish.
Press SAY and enter a two-digit register number to save the instrument's current settings.
To recall the settings, press REG and enter the register number. The arrow keys allow you
to recall registers in numerical sequence. You can arrange your registers in up to ten
different sequences.
The number of the currently selected sequence and the last register selected are always
displayed in the lower-left corner of the display to help you keep track of where you are in
your testing process. (If Option lEP is present, the sequence and register are not displayed
on any pager encoding menu.) The memory register examples provided in Chapter La,
"Operation Examples," show you how to create a sequence and how to delete or add
registers in your sequence.
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