8M083X25 R14
APX Series P25 Interface
DVRS Installation & Programming Guide
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PART I
January 2019
Page 38 of 153
In-Band DVRS Mounting
1. Select the locations of the DVR, in-band filters and MSU such that the interconnecting
cables can reach and there is enough space for securing the side thumbscrews.
2. Using the mounting base as a template, mark the positions of the 12 holes on the
mounting surface.
3. Center-punch the spots you have marked and realign the mounting base in position.
4. Secure the mounting bases with six self-
drilling screws. 6mm or ¼” screws are
recommended.
5. Leave enough room for adequate access to the DVRS connectors and screws.
6. Route the cables through the mounting bases as required.
7. Drop the DVR and the Notch Filter Assemblies into the mounting bases and slide each
back.
8. Secure the DVR assembly with the two 8mm machine screws and split spring lock
washers provided.
9. Tighten the two 8mm machine screws with the 6mm Allen Key. The required tightening
torque is 21.7 Nm (16 lb in).
10. Repeat step 9 to install the Notch filter assembly.
11. Connect all cables and then secure the front and rear DVR covers by tightening the 4
thumbscrews provided.
12. Secure the rear Notch Filter cover by tightening the 4 thumbscrews provided.
