Chapter 2: Front Panel Operation
66
2500A Series Operation Manual, 34172 Revision C, March 2008
1. Press the RAMP button to invoke the Main Ramp menu, then press the RAMP Power menu. Select
the “Start Power” menu item in the RAMP Power menu, and enter the desired ramp start power
using either the numeric keypad, Step Up/Step Down buttons, or the rotary knob.
2. If the 90 dB step attenuator is installed in the unit, continue with the next step, otherwise, continue
with Step 4.
3.
S
elect the “Attenuation” menu item in the RAMP POWER menu, and use the Step Up or Step
Down button to select the desired step attenuator level.
The step attenuator cannot be set to auto-switch while in power sweep mode. Choose an appropriate
step attenuator level such that the range of the power sweep will be within 25 dB above and 20 dB
below the step attenuator level chosen.
4. Select the “Start Power” menu item in the RAMP POWER menu, and enter the desired ramp start
power level using either the numeric keypad, Step Up/Step Down buttons, or the rotary knob.
5. Select the “Stop Power” menu item in the RAMP POWER menu, and enter the desired ramp stop
power level using either the numeric keypad, Step Up/Step Down buttons, or the rotary knob.
The ramp stop power level can be set equal to, greater than, or less than the ramp start power level.
6. Select the “Frequency” menu item in the RAMP POWER menu, and enter the desired output fre-
quency using either the numeric keypad, Step Up/Step Down buttons, or the rotary knob.
7. Select the “Sweep Time” menu item in the RAMP POWER menu, and enter the desired ramp sweep
time using either the numeric keypad, Step Up/Step Down buttons, or the rotary knob.
8. If the LED indicator that is above the RF ON button is not lit, press the RF ON button to enable the
signal at the RF output connector.
When the signal at the RF output connector is enabled, the LED indicator that is above the RF ON
button is blue.
2.4.3.9
Generating an Externally Pulse Modulated Signal
The following procedure explains how to set up the instrument to generate a signal that is pulse modu-
lated using an external modulation source.
When this type of pulse modulation is used, the RF output signal is pulsed according to the signal that is
applied to the rear-panel PULSE IN/PM TRIG IN connector. Figure 2-34 shows an example of this with
Summary of Contents for 2508A
Page 1: ...2500A Series 2500A Series Microwave Synthesizer Operations Manual 34172 Revision C March 2008 ...
Page 4: ......
Page 22: ...Chapter 1 2500A Introduction 22 2500A Series Operation Manual 34172 Revision C March 2008 ...
Page 88: ...2500A Chapter 3 Remote Operation 88 2500A Series Operation Manual 34172 Revision C March 2008 ...