SYSTem Subsystem 12
N1911A/1912A P-Series Power Meters Programming Guide 527
SYSTem:PRESet <character_data>
This command presets the power meter to values appropriate for measuring the
communications format specified by <character_data>. The power meter is preset
to default values if no value or the value DEFault is supplied.
For further information on preset configurations, refer to
Table 12-1 through to Table 12-58.
Command results differ according to the sensor(s) connected to the power meter:
– If connected to a dual channel power meter, a P-Series or E9320 sensor are
connected to one channel, and another model sensor is connected to the
other channel, the channel connected to the P-Series or E9320 sensor is set
up according to the <character_data> value and the other channel is set to
DEFault values.
– If two P-Series or E9320 sensors are connected to a dual channel power
meter, both channels are set to the same values except for bandwidth which is
set to an appropriate value for each sensor.
Primary and Secondary Channels
Dual channel meter channels are defined as either primary or secondary. The
primary channel is always the trigger master and primary channel measurements
occupy a greater share of the display space than secondary channel
measurements.
– If a dual channel meter has a P-Series sensor connected, the P-Series or
E9320 sensor channel is the primary channel. In such cases the primary
channel could be either Channel A or Channel B. The other model’s channel is
the secondary channel.
– If a dual channel meter has two, P-Series or E9320 sensors, connected to it,
the primary channel is always Channel A and the secondary channel is
Channel B.
DEFault settings apply to both *RST and to
SYSTem:PREset DEFault unless stated otherwise.
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