Boonton 4530 Peak Power Meter User Manual - Manual (Page 107)

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Boonton Electronics Chapter 4
4530 Series RF Power Meter Remote Operation
DISPlay:TEXT:RESolution
Description: Set or return the display resolution for the selected channel’s reading in the main text
display. When logarithmic units are in use, the argument sets the number of digits dis-
played after the decimal point. For linear units, the number of significant digits displayed is
approximately equal to the argument plus two. Note that any readings displayed in a small
font (secondary readings in the header or on some of the single-channel text displays) are
not affected by this setting. Resolution of the measurements returned over the bus is also
not affected by this command.
Syntax: DISPlay:TEXT[1|2]:RESolution <n>
Argument: <n> = 1, 2 or 3
Valid Modes: Large font text display
4.5.10 TRIGger Subsystem
The TRIGger group of commands is used to control synchronization of data acquisition with external events. TRIGger
commands generally effect Pulse mode only, and control selection of a hardware trigger source and polarity, setting a
trigger level, configuring delay and holdoff timing, and setting the trigger position on the display.
TRIGger:POSition
Description: Set or return 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
TRIGger:DELay setting is in
addition to this setting, and will cause the trigger position to appear in a different location.
Syntax: TRIGger:POSition <asc>
Argument: <asc> = LEFT, MIDDLE, RIGHT
Valid Modes: Pulse mode only
TRIGger:DELay
Description: Set or return the trigger delay time with respect to the trigger. Positive values cause the
actual trigger to occur after the trigger condition is met. This places the trigger event to the
left of the trigger point on the display, and is useful for viewing events during a pulse, some
fixed delay time after the rising edge trigger. Negative trigger delay places the trigger event
to the right of the trigger point on the display, and is useful for looking at events before the
trigger edge. Due to memory limitations, positive or negative trigger delay is restricted in all
timespans, but is always at least 30 times the timespan setting, and considerably greater for
some settings.
Syntax: TRIGger:DELay <n>
Argument: <n> = -150.00 to 150.00 seconds (see restrictions)
Valid Modes: Pulse mode only
Restrictions: -900
µs < TrigDly < 900µs for timespans 5µs and faster
-4.00ms < TrigDly < 4.00ms for timespans 10
µs to 50µs
(-80 x TimeSpan) < TrigDly < (80 x TimeSpan) for timespans 50
µs to 2ms
(-30 x TimeSpan) < TrigDly < (30 x TimeSpan) for timespans 5ms and slower