FIRST TIME USE
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B3422
Fig. 3-6 Total shift menu
(2) Carrier frequency and RF level, as well as modulation depth/deviation and frequency − in
combination with the [AM], [FM] and [
ϕ
M] keys − can be further adjusted using the
appropriate [Shift] key. The amount of shift at each key-press is that of the current step
value.
Combiner summary
The [Σ] hard key may be used to display a summary of all the sources’ frequencies and levels and
provides an easy means to change these parameters. This menu is also used to implement the
attenuator lock function for each individual source. The function inhibits operation of the step
attenuator from the level at which the key is enabled, and is usable for a level reduction of at least
10 dB.
(1) Press the [Σ] hard key to show the Combiner Summary similar to that shown in Fig. 3-7
below.
B3423
Fig. 3-7 Combiner summary (for instrument with three sources fitted)
(2) You can reset the carrier frequencies and RF levels for each of the sources fitted in your
instrument. Press the [Carrier Freq] or [RF Level] key for the applicable source, enter the
new value on the key pad and press a terminator key.
(3) To display the individual signal source settings press the required [A], [B] or [C] key.
(4) To implement the attenuator lock function, press the [Atten Lock] key for the required A, B
or C source. Atten Lock is shown on the menu (and also shown on the Sig Gen menu)
against the appropriate source parameters.
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General