Boonton 4530 Peak Power Meter Service Manual - Manual (Page 7)

BOONTON ELECTRONICS a WIRELESS TELECOM GROUP COMPANY
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l. Monitor the VIDEO OUT 1 on the rear panel of the 4530 with the oscilloscope. Verify that the
waveform displayed is a 100kHz squarewave with a peak-to-peak amplitude of 1.7V +/- 0.3V. It is
acceptable for the falling edge to decay slowly near the bottom – similar to the waveform that
displayed on the 4530.
m. Set Main Menu > Chan 1 > Params > Video BW to “Low”, then press the Graph key again.
n. Verify that now a serasoidal waveform (a highly filtered square wave with very slow rise and fall
times) is displayed, which indicates that the sensor correctly switched to low bandwidth mode.
8) CHANNEL 2 PEAK ACQUISITION / TRIGGER TESTS (Model 4532 only)
a. Connect and Calibrate a peak sensor on channel 2:
1. Plug in a 57518 peak power sensor into the 4532 “Sensor 2” connector.
2. From front panel controls, select Zero/Cal > AutoCal. Use the right-arrow key to select
Sensor 2, and press Enter to begin the autocal. The instrument will take about 1.5 minutes to
calibrate the sensor.
b. Use the front panel controls to set the following menu items as needed:
Set Main Menu > Chan 2 > MeasMode to “PulseMode”.
Set Main Menu > Chan 2 > Params > dB Offset to 0.00dB.
Set Main Menu > Chan 2 > Params > Frequency to 1.00GHz.
Set Main Menu > Chan 2 > Params > Video BW to “High”.
Set Main Menu > Chan 2 > Display > Vert Span to 100dB.
Set Main Menu > Chan 2 > Display > Vert Cntr to 0dBm.
Set Main Menu > Trig/Time > Time Span to 5ms.
Set Main Menu > Trig/Time > TrigSrce to “Snsr 2”.
Set Main Menu > Trig/Time > TrigLevel to 0.0 dBm.
c. Press the Graph key.
d. Set the function generator frequency to 500Hz. A square wave should be displayed.
e. Increase the frequency setting on the function generator to 100KHz.
f. Press the Right Arrow key until TimeSpn is highlighted in the Graph Mode Edit Menu, then press
the Up key until the Time Span is set to 50usec. A square wave with sharp edge transitions
should be displayed, although the falling edge may decay slowly near the bottom.
g. Monitor the VIDEO OUT 2 on the rear panel of the 4532 with the oscilloscope. Verify that the
waveform displayed is a 100kHz squarewave with a peak-to-peak amplitude of 1.7V +/- 0.3V. It is
acceptable for the falling edge to decay slowly near the bottom – similar to the waveform that
displayed on the 4530.
h. Set Main Menu > Chan 2 > Params > Video BW to “Low”, then press the Graph key again.
i. Verify that now a serasoidal waveform (a highly filtered square wave with very slow rise and fall
times) is displayed, which indicates that the sensor correctly switched to low bandwidth mode.