HP 8920A, User Manual

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Chapter 8, Signaling Decoder Screen
EDACS Decoder
Radio/Repeater
This field specifies whether the decoder will trigger on the received sync word of
a mobile signal (
Radio
), or on the sync word from a repeater (
Repeater
). It also
specifies how the received data will be interpreted.
The repeater function is not fully implemented at this time to provide base station
decoding.
RX Test
When
Send
is selected, the Control Channel Site ID message is output at the RX
Frequency specified in the
Control Channel
settings on the EDACS Encoder
screen.
Single/Cont
This field specifies how you want to arm the decoder.
•
Single
requires you to manually arm the decoder (using the
Arm Meas
field) before
each measurement is made.
•
Cont
automatically arms the decoder to make a measurement, and re-arms the decoder
after a measurement is made.
Operating Considerations
To dis-arm the decoder in single mode, select the
Stop Meas
field. The Stop
Meas function is disabled when
Cont
is selected.
Standard
The encoder’s
Data Rate
field must be set to the data rate expected from the
radio or the repeater being decoded. This is best done by selecting the
corresponding standard on the encoder’s screen.
See Also
Standard field description, on page 386
Stop Meas
This field is used to dis-arm the decoder when making single measurements. It is
not used when making continuous (
Cont
) measurements.