HP4402.book : chapter2.fm 59 Thu Feb 11 15:53:59 1999
Power Meter Operation
Recorder Output
HP E4418B User’s Guide 2-59
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. This dc voltage ranges from 0 to +1 Vdc. The output
impedance is typically 1 kΩ . 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 2-20.
See Figure 2-22 for details on which power meter functions are
implemented in the recorder output.
Figure 2-20: 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
1V
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
INRF OUT
SWEEP
OUT
X-AXIS (FREQUENCY)
Y-AXIS (POWER)
RECORDER
OUTPUT
System
Inputs
More
Recorder Output
Max Power Min Power
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