2500A Menus
2500A Series Operation Manual, 34172 Revision C, March 2008
Figure 2-26: PM Menu 4 with Interactive Softkeys
The following explains each item in the PM Menu 4 menu:
PM. T
This menu item turns pulse modulation on and off. Pressing either the adjacent soft key or the Step
Up or Step Down buttons toggle the PM state. The
PM
indicator is displayed in the upper right-hand cor-
ner of the display when pulse modulation is turned on
RF Pulse Delay.
This menu item allows you to view and modify the RF pulse delay setting, which deter-
mines the amount of delay that occurs between the chosen triggering edge (rising or falling) of the signal
at the PULSE IN/PM TRIG IN connector and the rising edge of the video pulse at the rear-panel PULSE
OUT connector.
NOTE:
The pulse that subsequently appears at the RF output connector is typically delayed by
approximately 50 ns.
The RF pulse delay parameter can be modified using either the numeric keypad, the step up/step down
buttons, or the rotary knob.
Width.
This menu item allows you to view and modify the width of the pulse that appears at the RF out-
put connector when an appropriate triggering signal is applied to the rear-panel PULSE IN/PM TRIG IN
connector.
NOTE:
The same width parameter setting gets used for all three internal pulse modulation modes
(continuous, triggered, and gated); it is not set and stored separately for each of those modes.
Sync Out Delay.
This menu item allows you to view and modify the sync out delay setting, which deter-
mines the amount of delay that occurs between the leading edge of the video pulse at the PULSE OUT
connector and the leading edge of the sync pulse at the PM SYNC OUT connector.
Trigger Polarity.
This menu item allows you to view and choose the edge of the TTL pulsed input signal
applied to the PULSE IN/PM TRIG IN connector that is used to trigger an RF pulse at the RF output con-
PM Internal-Triggered
On/Off
PM
0.05
µ
s - 0.01 sec
0 - (width - 50 ns)
Width
Sync out
Delay
0.1
µ
s - 1 sec
RF Pulse
Delay
Trigger
Polarity
Rising Edge/Falling Edge
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 ...