8M093X01 R1.0
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RF Bypass Switch with APX8500 MSU and All Band Antenna
If installing an in-band DVR-LX, it comes equipped with an internal RF bypass switch.
This switch bypasses the filtering at the output of the MSU as required to allow access to
the full frequency band when DVR-LX is not enabled or to block certain frequencies when
DVR-LX is active to ensure interference-free communication.
When the DVR-LX is paired with an APX8500 MSU connected an all-band antenna, this
switch bypasses the filtering at the output of the MSU as needed.
MSU in-band filter is in use when:
•
MSU is on an in-band channel/TG AND DVR-LX is enabled
MSU in-band filter is not in use when:
•
MSU is on a cross-band channel/TG OR
•
MSU is on an in-band channel/TG AND DVR-LX is disabled
To enable the correct RF Switch operation, the following must be configured via FRC:
•
Hardware Setup-> MSU RF Bypass Switch
= checked (enabled) (See: Figure
2: RF Bypass Switch Configuration)
•
Hardware Setup-> Relay Use-> Relay 1
= MSU RF Bypass Sw. (See: Figure 2:
RF Bypass Switch Configuration)
•
VR Common Setup-> Enable Bypass Algorithm for APX 8500
= checked
(enabled) (See:Figure 3: RF Bypass Switch with APX8500 MSU Configuration)
Figure 3: RF Bypass Switch with APX8500 MSU Configuration
NOTE:
For in-band configurations where an APX8500 interface kit is also required, the
above programming is still required. Instructions on how to install an interface kit with an
in-band DVRS are provided separately from this manual
5
.
5
Contact Futurecom to determine if an interface kit is required or to obtain an installation drawing.
