Manual - 8500A Series Peak Power Meter - Giga-tronics

Operation
2.3 Rear Panel Description
The Series 8500A power meter rear panel controls and interface connections are described in this section.
The boxed numbers in the diagram correspond to the boxed numbers in the description. The Model
8501A will have single-channel inputs while Model 8502A will have Channel A and Channel B inputs as
shown in Figure 2-4.
Figure 2-4. Model 8502A Rear Panel
1 Input Power
and Fuse
Refer to Section 2.2 for the details to select the correct input voltage and fuse.
2 Monitor Output This output connection interconnects to a test instrument such as an oscilloscope to
externally monitor the detected signals entering the PPM. The Model 8502A has a
monitor input for Channel A and Channel B.
3 Analog Output This connector outputs 100 mV/dB signal to interface the PPM with the
Giga-tronics Model 8003 Precision Scalar Analyzer for making swept peak power
measurements (see Measuring Peak Power Under Swept Conditions in Section 2.14).
The Model 8502A has an analog input for Channel A and Channel B.
CAUTION
When using the PPM in the 1018B Emulation Mode, it should be kept in mind that
the 1018B instrument has a 10 mV/dB analog output while the PPM has
100 mV/dB. If the 10 mV/dB output of the 1018B is required, a 10:1 resistive divider
network should be employed to reduce the PPM’s 100 mV/dB output.
Manual No. 20790, Rev C, November 1998 2-5
Superceded by Revision D, March 2009