User's Manual

The “VRS Personality” can be programmed directly into the VRS750 EEPROM using
Professional Radio CPS and a new dip switch configuration (see Figure 10). All other
operating parameters will still be programmed using the ASTRO Spectra CPS.
Switch # Position
1 OFF
2 ON
3 ON
4 Not Used
Figure 10 VRS750 DIP switch settings
The fifth window, Radio Configuration->Radio Wide VRS-EP Mode Steering->VRS-
EP Mode Steering List->VRS-EP Mode Steering - 1 (see Figure 11) is a table
containing PL and mode steering information that can be edited. Mode Steering must
first be enabled in the VRS Private Line window before the mode steering PLs in the
table can be edited. To enter the PL codes used in mode steering and their corresponding
destinations, enter the desired PL code or frequency by using the pull down menu in each
PL Freq. or PL Code box. Then select the corresponding Steering Destination in the
same manner.
If the VRS Tx Squelch Type was set to TPL in the VRS Private Line window, none of
the mode steering PLs may be the same as the VRS Tx PL Frequency.
Note: The Receive PL filter internal to the VRS is a low pass filter with a -3 dB point of
approximately 170 Hz. As a result, the PLs greater than 170 Hz will be attenuated to
allow for a decreased decode sensitivity. The higher the PL frequency the greater the
attenuation. The Emergency, Message, and Status features of the VRS are best suited for
use with these higher PL frequencies.