CMN-91
Installation and Operation Manual
Installation
© 2016 Imagine Communications Corp. Proprietary and Confidential.
Revision D | Page 28
Although only one CMN-91 unit is shown, two CMN-91 units may be mounted into a DRC-3 rack case.
Parts Required to Rack Mount the CMN-91 Using the DRC-3
Key
Item Number
Qty
Description
1
-
A/R
CMN-91 unit
2
866078
1
DRC-3 rack case
3
831030
4
#10-32×¾-in. Phillips head screws
4
831019
4
Nylon washer, rack mount
5
831064
4
#8-32×½-in. Phillips head screws (CMN mtg)
6
831114
4
#8 Ext. tooth lock washers
7
832125
2
Optional metal rack ears, flush mount
8
832072
2
Metal extension mount
9
832070
2
Metal extension bracket
10
831119
8
#8-32 kep nuts
11
831064
4
#8-32×½-in. Phillips head screws
12
831118
8
#10 flat washers
13
831030
4
#10-32×¾-in. Phillips head screws
14
831060
4
#10-32 kep nuts
15
832131
1
Optional metal cover plate
16
831180
4
#4-40×¼ self-tapping Phillips head screws
These instructions are for installing units without the optional rack mounting extensions. For installing
units with the optional extensions, see DRC-3 Rack Mount with Rack Extensions Installation (on page
28).
To mount the CMN-91 into a DRC-3 rack mount without rack extensions, follow these steps:
1.
Slide the CMN-91 unit (ITEM 1) in the DRC-3 rack case (ITEM 2).
2.
Using ¾-in. Phillips head screws (ITEM 3) and lock washers (ITEM 4), secure the CMN-91 unit to the
front of the DRC-3 rack case.
3.
Using ½-in. Phillips head screws (ITEM 5) and lock washers (ITEM 6), secure the CMN-91 unit to the
back of the DRC-3 rack case.
4.
If desired, install the optional cover plate:
Slide the metal cover plate (ITEM 15) into the desired side of the DRC-3 rack.
Using 4 self tapping screws (ITEM 16), secure the cover plate into the DRC-3 rack.
The installation is complete.
DRC-3 Rack Mount with Rack Extensions Installation
To install the optional flush mount rack ears (ITEM 7), first remove existing rack ears, but do not remove
the metal spacers. Using the same hardware, attach the flush mount rack ears.