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Chapter 3
Operations, General
3-1 INTRODUCTION The basic operation of the Model ME7840A Power Amplifier Test Station
(without external preamplifiers) is described in this and the following two
chapters: Calibration Operations and Measurement Operations. “Calibra
-
tion Operations” describes the software measurement calibration func
-
tion and “Measurement Operations” describes the software measurement
function. This chapter describes the setup and general operation of the
software. (See Chapter 7 for operation with external preamplifiers.)
3-2 PREPARING THE
SYSTEM
Refer to Figure 3-1 to identify the equipment named in the recommended
power-up sequence for the ME7840A.
Step 1. Connect the output of the AUT to Test Port 2 of the MS4782X.
Step 2. Connect the input of the AUT to Test Port 1 of the MS4782X.
Step 3. Ensure that the power rating of the cables is suitable for the
test, and that the connections are tightened.
Step 4. Turn on the MS462XC then the MS4782X Test Set.
Step 5. Set the output of the MS462XC so that the AUT output power
does not exceed the maximum Test Port 2 input level. See be
-
low.
Test Set Model
External Circulator
Used
Test Port 2 Max Power
MS4782A Not Applicable 50 watts
MS4782D None (port C1 directly
connected to port C2)
100 watts
MS4782D 1000-50 or 1000-52 (20
dB isolation)
50 watts
MS4782D 1000-53 (22 dB isolation) 79 watts
MS4782D Two circulators providing
greater than 23 dB
isolation
100 watts
ME7840A OMM 3-1
CAUTION
The AUT RF power output
maximum level should be
no more than the level
shown in the tabulation at
right. Otherwise, damage
to equipment will occur.