HP 8920A - Get the Mobile up on the Control Channel

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Chapter 10, Signaling Encoder (AF Generator 2)
Using the EDACS Encoder
Get the Mobile Up on the Control Channel
1. Turn AF Generator 1 Off (to disable the default 3 kHz FM deviation). To do this, po-
sition the cursor in front of the 3.00 value in the AFGen1 To field on the RF GEN-
ERATOR or DUPLEX TEST screen and press the ON/OFF key.
2. Select ENCODER from the To Screen menu.
3. Select the Mode field and choose EDACS from the Choices menu.
4. Select the standard used by the radio (4800 or 9600 bps).
5. Enter the Control Channel settings.
•The Number is the system control channel number programmed into your mobile.
•The RX Frequency is the control channel’s receive frequency for your mobile.
•The TX Frequency is the control channel’s transmit frequency for your mobile.
6. Enter the Working Channel settings.
•The Number is the working channel number (programmed into your mobile) that
you want the mobile to be sent to.
•The RX Frequency is the mobile’s receive frequency for the selected working
channel.
•The TX Frequency is the mobile’s transmit frequency for the selected working
channel.
7. Enter the Logical ID number.
8. Enter the Group ID number.
9. Enter the Site ID number.
10. Select the Send field (under RX Test). The Status: field should now indicate
Control.
11. The Test Set should now be sending the control channel’s site identification informa-
tion to the mobile, and the mobile should indicate that it is receiving the control channel
data.
12. Select the Handshake field. This tells the mobile and RF Generator to go to the work-
ing channel frequencies. The mobile should now indicate that it is “busy”, and is tuned
to a working channel (this is a “receiver handshake”). The Status: field should now
indicate Working.