General Dynamics R2600 Series User Manual

Table 9-1. Available Transmit Frequency Ranges and Channel Plans (800 MHz Selection)
Frequency Range
(MHz)
Channel Range Channel Spacing
(KHz)
Xmit/Rcv Offset
(MHz)
800 MHz (US)
Standard
851.01250 -
865.98750
000 - 599 25 + 45
800 MHz (US)
Splinter
851.00000 -
865.97500
000 - 599 25 +45
800 MHz (US)
Block 1
866.01250 -
868,98750
600 - 719 25 +45
800 MHz (US)
Block 2
866.00000 -
866.97500
720 - 759 25 +45
800 MHz (US)
Block 3
867.00000 -
867.40000
815 - 831 25 +45
800 MHz (US)
Block 4
867.42500 -
868.97500
961 - 1022 25 +45
800 MHz (US)
Block 5
868.97500 958 25 +45
The Trunking Analyzer performs an ISW decode
sequence on the control channel that provides
talkgroup and unit ID information. Once the
ISW data is decoded, the trunking analyzer sends
channel grant OSWs on the control channel and
link control data on the voice channel. The radio
detects the channel grant OSW's, switches to the
voice channel, and begins transmitting. The
trunking analyzer enables its modulation and
unmutes its speaker. Throughout the
handshaking sequence, the trunking analyzer
updates the status thermometer at the appropriate
time. Refer to Appendix I for a description of the
status thermometer signaling events for each test
sequence.
The thermometer display progresses rapidly
through the signaling events.
9-7 SYSTEM INITIATED TRUNKING
Selection of the SYSTEM INIT softkey in the
"Meter" field configures the analyzer to display
the current data and test status for the system
initiated trunked test sequence. The analyzer
simulates the central controller calling the radio
under test.
NOTE
Talk Group, Unit ID, and Call Type
information must be entered before the
execution of a System Initiated test. If a Radio
Initiated test is executed prior to the System
Initiated test, these fields are automatically
updated. If required, refer to paragraph 9-8.1
for information related to entry and storage of
system/fleet map configurations.
When the test is started, the analyzer generates an
idle OSW pattern on the control channel selected
for a short period of time so the radio can acquire
the control channel. After the time has elapsed,
the analyzer directs the radio to the voice channel
and provides the voice channel handshake
signaling. Throughout the signaling process, the
status thermometer is updated at the appropriate
time.
143

General Dynamics R2600 Series Specifications

General

Brand	General Dynamics
Model	R2600 Series
Category	Measuring Instruments
Language	English