Boonton 4540 Peak Power Meter User Manual - Manual (Page 93)

Boonton 4540 Series RF Power Meter
Operation 4-45
4.5.25 Time Menu (Modulated and Pulse Mode)
The time menu provides for controlling the timebase setting, trigger position, and trigger delay.
Main > Time > Timebase
Description: Set the timebase in seconds/division. The 4540 has fixed timebase settings in a 1-2-5
sequence, and if the argument does not match one of these settings, it will be forced to
the next highest entry. Note: There are separate timebases for the Pulse Mode and the
Modulated Mode. The settings selected are saved and restored independently by mode.
Menu Type: Numeric Value.
Range: 10e-9 to 10 s in a 1-2-5 sequence,
30 s,
1 to 10 min,
30 min and 60 min
SCPI Command: DISPlay:MODUlated:TIMEBASE <numeric_value> or
DISPlay:PULSe:TIMEBASE <numeric_value>
Main > Time > Position
Description: If the Position Cntrl is set to Vernier (default):
Set the fine position of the trigger event on displayed
sweep. The position is given in divisions relative to
the left edge of the screen, so with zero trigger delay,
setting the vernier control to 0.0 causes the entire
trace to be post-trigger. Setting it to 10.0 causes the
entire trace to be pre-trigger. And setting to 5.0 will
display both the pre- and post-trigger portions of the
trace. Note that the Trig Delay setting is in addition
to this setting, and will cause the trigger position to
appear in a different location.
If the Position Cntrl is set to Preset:
Set the position of the trigger event on displayed
sweep. Assuming zero trigger delay, setting the
position to Left causes the entire trace to be post-
trigger. Setting it to Right causes the entire trace to
be pre-trigger. And setting to Middle will display
both the pre- and post-trigger portions of the trace.
Note that the Trig Delay setting is in addition to this
setting, and will cause the trigger position to appear
in a different location.
Menu Type: Numeric Value (Vernier) or Selection (Preset).
Choices: Left, Middle, Right (Preset Position setting)
Range:
-30.0 to 30.0 Divisions (Vernier Position setting)
SCPI Command:
TRIGger:VERNier <numeric_value> or TRIGger:POSition <character data>
Fig. 4-36 Time Menu
(Modulated and Pulse)