Agilent Technologies E8247C PSG CW - Manual (Page 40)

30 Chapter 2
Basic Operation
Configuring the RF Output
Setting the RF Output Amplitude
1. Preset the signal generator: Press
Preset
.
The AMPLITUDE area of the display shows the minimum power level of the signal generator. This is the
normal preset RF output amplitude.
2. Turn on the RF output: Press
RF On/Off
.
The display annunciator changes to RF ON . At the RF OUTPUT connector, the RF signal is output at the
minimum power level.
3. Change the amplitude to
−
20 dBm: Press
Amplitude
>
− 20
>
dBm
.
The new output power displays in the AMPLITUDE area of the display and in the active entry area. Until
you press a different front panel function key, amplitude remains the active function. You can also
change the amplitude using the up and down arrow keys or the knob.
Setting the Amplitude Reference and Amplitude Offset
The following procedure sets the RF output power as an amplitude reference to which all other amplitude
parameters are relative. The amplitude initially shown on the display is 0 dB (the power output by the
hardware minus the reference power). Although the display changes, the output power does not change. Any
subsequent power changes are shown as incremental or decremental to 0 dB.
1. Press
Preset
.
2. Set the amplitude to
−
20 dBm: Press
Amplitude
>
-20
>
dBm
.
3. Activate the amplitude reference mode and set the current output power (
−
20 dBm) as the reference
value: Press
More (1 of 2)
>
Ampl Ref Set
.
The AMPLITUDE area displays 0.00 dB , which is the power output by the hardware
(−
20 dBm) minus
the reference value (
−
20 dBm). The REF indicator activates and the
Ampl Ref Off On
softkey toggles On.
4. Turn the RF output on: Press
RF On/Off
.
The display annunciator changes to RF ON . The power at the RF OUTPUT connector is
−
20 dBm.
5. Change the amplitude increment value to 10 dB: Press
Incr Set
>
10
>
dB
.
6. Use the up arrow key to increase the output power by 10 dB.
The AMPLITUDE area displays 10.00 dB , which is the power output by the hardware
(-20 dBm plus 10 dBm) minus the reference power (
−
20 dBm). The power at the RF OUTPUT
connector changes to
−
10 dBm.
7. Enter a 10 dB offset: Press
Ampl Offset
>
10
>
dB
.
The AMPLITUDE area displays 20.00 dB , which is the power output by the hardware (
−
10 dBm) minus
the reference power (
−
20 dBm) plus the offset (10 dB). The OFFS indicator activates. The power at the
RF OUTPUT connector is still
−
10 dBm.