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Using the Preselector
Manual Operation
Remote Operation
2706 RF Preselector
This chapter describes how to operate the Preselector manually or with a GPIB
controller.
This section tells you how to use the Preselector manually by using its front-pan-
el controls.
Use the Preselector as follows:
1. Plug the Preselector into a power source (90–250 VAC, 48–63 Hz).
2. Connect the spectrum analyzer input to the RF OUTPUT connector on the
Preselector's front panel.
3. Turn on the Preselector. The front-panel LEDs will light sequentially. When
the BYPASS LED lights, the unit is ready to use.
NOTE. If any of the LEDs do not light, refer to Chapter 3, Performance
Verification.
4. Turn on the spectrum analyzer.
5. Use the BAND SELECT <- and -> switches to select the filter you want. The
Preselector will pass the frequency range printed above and below the lit
LED.
6. Connect the RF source to the RF INPUT connector on the Preselector's front
panel.
The Preselector is now ready for operation.
This section tells you how to operate the Preselector remotely with a controller
or computer that uses the IEEE Standard 488.2-1987 (GPIB) interface.
The smallest GPIB network that you can use is a Preselector and a controller;
you will also probably connect a spectrum analyzer to the network.
2–1
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