2-9 Modulation Commands Programming with GPIB Commands
2-26 PN: 10370-10374 Rev. F MG369xC GPIB PM
Stepped Delay Mode
The stepped delay mode automatically increments or decrements the pulse delay 1 value according to step
delay parameters. Stepped delay mode is only available when the triggering commands PTG3 (delayed) or PTG5
(triggered with delay) are specified. The SD1 command turns on the stepped delay mode. The pulse delay 1
start time can be set using the SDS parameter entry command; the delay 1 stop time can be set using the SDE
parameter entry command. Use the SDD parameter entry command to set the step size and the SDL parameter
entry command to set the dwell-time-per-step. The SD0 command turns off the stepped delay mode.
Programming Notes:
Use the PTR and PTF commands in conjunction with the pulse trigger commands PTG2 (gated), PTG4
(triggered), and PTG5 (triggered with delay) to specify whether the pulse generator is triggered by the rising or
falling edge of the external trigger pulse.
External Pulse Modulation Function
The XP command turns on the external pulse modulation function. The PO (or SW0) command turns off the
pulse modulation function.
Modulation Command List
Table 2-9. Modulation Command List (1 of 2)
Mnemonic
Code Function
AM0 Turns off the internal or external AM function.
AM1 Turns on the external AM function in Linear mode.
AM2 Turns on the external AM function in Log mode.
AM7 Turns on the internal AM function in Linear mode.
AM8 Turns on the internal AM function in Log mode.
AMO Turns off the internal AM function generator if it is on.
AMW(x)
Selects the internal AM waveform, where x = 1-sine wave, 2-square wave, 3-positive ramp,
4-negative ramp, 5-Gaussian noise, 6-uniform noise, 7-triangle wave, 8-user defined.
DPT Internal triggered pulse with delay.
EP0 Selects TTL-low to turn RF on during pulse modulation.
EP1 Selects TTL-high to turn RF on during pulse modulation.
FM0 Turns off the internal or external FM function.
FM1 Turns on the external FM function in Unlocked Narrow mode.
FM2 Turns on the external FM function in Locked Low-Noise mode.
FM7 Turns on the internal FM function in Unlocked Narrow mode.
FM8 Turns on the internal FM function in Unlocked Wide mode.
FM9 Turns on the internal FM function in Locked mode.
FML Turns on the external FM function in Locked mode.
FMN Turns on the internal FM function in Locked Low-Noise mode.
FMU Turns on the external FM function in Unlocked Narrow mode (Same as FM1).
FMW Turns on the external FM function in Unlocked Wide mode.
FWV(x)
Selects the internal FM waveform, where x = 1-sine wave, 2-square wave, 3-positive ramp,
4-negative ramp, 5-Gaussian noise, 6-uniform noise, 7-triangle wave.
GP Internal gated pulse on.
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