HP EPM E4418A, User Manual

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HP4402.book : chapter2.fm 39 Tue Apr 22 15:20:23 1997
Power Meter Operation
Recorder Output
HP EPM-441A User’s Guide 2-39
Recorder Output
The rear panel Recorder Output connector produces a dc voltage that
corresponds to the power level in Watts of the channel, depending on the
measurement mode. The Recorder Output is disabled (0 V) during relative
measurements. This dc voltage ranges from 0 to +1 Vdc. The output
impedance is typically 1 k
Ω
. Channel and display offsets, and duty cycle
have no effect on the Recorder Output.
For example, the Recorder Output can be used to;
• record swept measurements on an X-Y recorder
• level an output from a source using external leveling, or
• monitor the output power on a strip chart recorder. A setup for
recording swept measurements is shown in Figure 2-12.
Figure 2-12: Test Setup for Recording Swept Measurements
To access the “Recorder” menu press , , .
This menu allows you to switch the Recorder Output signal either on or
off. The
and softkeys allow you to enter the
input power level that you want to represent the 1 V
dc
maximum and
0 V
dc
minimum output voltage of the Recorder Output.
Device
Power Meter
CHANNEL A
INPUT
OUT
X-Y Recorder
Swept Source
Under Test
IN RF OUT
SWEEP
OUT
X-AXIS (FREQUENCY)
Y-AXIS (POWER)
RECORDER
OUTPUT
System
Inputs
More Recorder Output
Max Power Min Power