Agilent Technologies 34945A User Manual page 114

5
Additional Operating Information
Figure 5-6 illustrates the pulse actuation for two channels (switches) and the
relationship of the drive parameters to the power supply requirements.
Drive Ch 1
Drive Ch2
As shown in the figure , the actuation pulse is applied to channel 1 and held
for the T(Pulse) time set by the bank preset which is 15.0 ms, or as set with the
command:
ROUTe:CHANnel:DRIVe:PULSe:WIDTh
The actuation pulse is applied to channel 2 only after a power supply recovery
period has elapsed T(Recovery). The power supply recovery time can be set for
each channel, and is set to 0.0 ms during a bank preset (Chapter 4). The
recovery time can be changed using the command:
ROUTe:CHANnel:DRIVe:TIMe:RECovery
When verifying channel closure, you can also specify a settling time (T(Settle)).
This parameter ensures the switch has had time to change state before the
position indicator (of the switch) is evaluated.
The settling time can be set for each channel and is set to 0.0 ms during a bank
preset (Chapter 4). The settling time can be changed using the command
ROUTe:CHANnel:DRIVe:TIMe:SETTle
The 34945A will always pulse a channel in response to a
ROUTe:CLOSe
times in a row will result in three actuation pulses.
106
T(Pulse)
Start Drive
Channel 1
Figure 5-6. Pulse Actuation Mode Diagram.
command. For example, sending
Agilent 34945A Microwave Switch/Attenuator Driver Module User's Guide
T(Setttle)
T(Recovery)
Start Drive
Channel 2
ROUTe:CLOSe
Channel 1 Position
Indicators Evaluated
or
ROUTe:OPEN
to a channel three