Boonton 4500B Peak Power Meter - Manual (Page 344)

Boonton 4500B RF Peak Power Analyzer
Maintenance 7-12
Calibrator External Pulse Verification
Verify the external pulse input for the calibrator after the sensor has been calibrated (Subsection
7.7). The external pulse input is a TTL-compatible input located on the rear panel of the Model
4500B. To test the external pulse input, proceed as follows:
1. Connect the Channel 1 sensor to the calibrator output.
2. Press the Init system key to reset the instrument‘s settings to their default states.
3. Set the calibrator output to 5 dBm by selecting Calibrator > Set Level > 5 dBm.
4. Set the calibrator trigger to External by selecting Calibrator > Pulse > Source Ext.
5. Select positive trigger polarity by selecting Calibrator > Pulse > Polarity > +.
6. Set the calibrator to pulse mode by selecting Calibrator > Cal Mode Pulse.
7. Turn the calibrator on by selecting Calibrator > Cal Output > On.
8. Connect a BNC cable between the external pulse generator output and the EXT PULSE input
on the Model 4500B.
9. Set the external pulse generator output for 5 volts, 50 ohms, 100 ms pulse period, 50 ms pulse
width.
10. The Model 4500B should display a 5 dBm pulsed waveform with the period and pulse width
indicated in Step 9.