User's Manual

7-4 68P81093C75-A
Channel Information From the Main Menu, press F4. Press F4 again to arrive at the
Channel Information Screen. From this screen, the user may
configure the TX and RX frequencies, RF power out, modulation
type, and the various channel traits for up to 16 channels.
1. In this screen, first set the Rx1 and Tx frequencies to the proper
values.
NOTE: The Rx2 frequency is set to 0.00000 MHz and cannot
be edited. This is because the PDR 3500 does not
support 2 receivers.
The station will automatically calculate the Tx Idle Frequency
based on the TX-RX spacing for the channel. In most
applications, the TX Idle Frequency will be the same as the Tx
Frequency. However, in case of portable or mobile radios
unsquelching near the PDR 3500, adjust the Tx Idle Frequency
to the Tx Frequency -6.25kHz.
2. Set the modulation type to either Analog, ASTRO, ASTRO CAI,
Analog/ASTRO CAI, or CAI RX WIDE DEV.
3. Move to page 2 of the Channel Information Screen by pressing
the Page Down key. Set the Normal Tx Power Out to the
desired power level, unless the station being programmed is
UHF R3 or UHF R4. If the station transmitter is UHF R3 or
UHF R4, the power output must be translated using Table 6 due
to a difference between the power range in RSS and the actual
power range of the station.
All bands except UHF R3 and UHF R4 use the low power
Quantar station profile, meaning the station is RSS programmed
as a low power station, and the actual output power of the station
matches what is programmed in RSS. For UHF R3 and UHF R4,
however, there is no low power Quantar profile, so the high
power profile is used. Thus, all power settings in RSS for those
bands are based on a range of 20-120W for R3 and 20-110W for
R4. Since the actual output power of the PDR 3500 is 5-30W for
R3 and 5-25W for R4, Table 6 must be used to translate actual
power into RSS power. The “Actual Power” column corresponds
to the power out of the PDR 3500 while the “RSS Power”
column corresponds to power levels to be entered in RSS during
the alignment process.
For example, to set a UHF R3 station to transmit at 15 watts,
“60” should be entered in the Normal Tx Power Out field of
RSS, as specified in Table 6.