Giga-tronics 2508A, Operation Manual

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Chapter 2: Front Panel Operation
64 2500A Series Operation Manual, 34172 Revision C, March 2008
2.4.3.5 Configuring the 8650A Universal Power Meter
The 8650A Power Meter must be manually configured for the appropriate baud rate settings. The 2500A
communicates with the 8650A with a baud rate setting of 38400.
1. Connect the sensor to the calibrator and calibrate the sensor to the power meter.
2. Press the Meter Setup, select RS-232 and press the Config soft key.
3. Set the RS-232 parameters to the following:
•Baud Rate 38400
•Data Bits
8
•Parity Off
•Stop Bits 1
4.Press the OK soft key and return to the main menu.
2.4.3.6 Configuring the Cable Correction Setup
Set up the 2500A and 8650A as shown in Figure 2-33.
Figure 2-33: Cable Correction Set Up
1. Connect the Null Modem cable between the 2500A RS-232 port and the 8650A RS-232 port.
2. Connect the BNC cable from the Sync Out connector on the rear panel of the 2500A and the Trig In con-
nector on the rear panel of the 8650A.
3. Connect sensor to the RF path to be characterized.
4. From the CW menu, press the Cable Cal softkey.
5. Press the Device Name softkey and select the Giga-tronics 8650A using the Up or Down Arrow buttons.
6. Press the RS-232 softkey to enter the Cable Cal:RS-232 menu.
7. Press the Start Cable Cal soft key to begin the swept frequency characterization.
After the frequency sweep is completed, a cable correction table will be generated and automatically applied to
the output of the 2500A. The first line in the Cable Cal menu will change to Cable Cal Stored. The cable calibra-
8650A Series
Power Meter MICROWAVE
SYNTHESIZER
RF Output
Power
Sensor
2400B Microwave Synthesizer
Cables, adapters
and other components
DB9 M-M Null Modem Cable
BNC
Sync Out
Trigger In