Wavetek 147 Specifiche Scaricare il pdf (Pagina 55)

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101

Description and Basic Operation: Configuring the SDA-5000

• Transmitter Attenuator: Use the up and down diamond keys to enter

the amount of attenuation for the CW transmitted signal to a maximum of

30 dB in 2.0 dB increments.

CAUTION ! If you set the transmitter test frequencies too

close to the CATV carrier while you’re connected to the

CATV system, you can create significant interference to the

subscribers.

• Transmitter Frequency: Enter the frequency for the transmitted signal

to the nearest 0.01 MHz using the numerical keys and the Enter key.

The up and down diamond keys change the frequency in the increments

established during setup.

• Sweep Telemetry On/Off: When it’s turned on, the SDA-5000 will

modulate the CW signal as it does the telemetry signal.

• Calibrate Transmitter: To calibrate transmitter output, press the Enter

key. You’ll see the screen shown in Fig. 2-12. You will be asked to shunt

or jumper with coax the input (IN) and output (OPT) terminals of the

meter with a short length of cable. When you’re done, press the OK soft

key.

Fig. 2-12 Calibrating Transmitter Output

If you test without a cable attached, the error shown in Fig. 2-13 occurs.

Check your F connectors, BNC connectors (if used), and the cable itself.

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Wavetek 147 Specifiche Pagina 55

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