HP 8920A User Manual page 384

Chapter 10, Signaling Encoder (AF Generator 2)
EDACS Encoder
Data Rate
FM Coupling
Group ID
Handshake
384
S:\HP892XX\USRGUIDE\manual\encoscrn.fb
This field sets the data rate (in bits-per-second) for the high-speed signaling. The
value can be changed using the keypad, or by selecting a value from the
field. However, the 9600 bps rate is the EDACS default, and should
Standard
not be changed under most circumstances. (4800 is used for narrowband 900 MHz
systems in the U.S.)
This field is used to select ac or dc coupling of the encoder to the RF Generator
when the
AFGen2 To
speed data, this field should be set to
This field is used to specify the group identification number for the trunked radio
group your radio is set up to access.
This field is used to get the mobile up on a working channel after it has accessed
the control channel.
When is selected, the control channel message is output at the receive
Send
frequency specified in the
changes from to
Idle
channel's transmit frequency.
Operating Considerations
The control channel message must be transmitting before a handshake can be
initiated. The
Status:
transmitting, and changes to
field is set to . Because the EDACS Encoder sends low-
FM
.
DC
Control Channel
, and the RF Analyzer is tuned to the control
Control
field indicates
Control
when the working channel is being sent.
Working
settings. The
Status:
when the control channel is
field