Comtech EF Data SMS-7000 - Manual (Page 44)

Installation SMS-7000 Modem Protection Switch
2–10 Rev. 3
2.3.2.3 Back Mount Installation
The back mount (hinge) feature provides ready access for installation and service, while
making efficient use of rack volume. The Back-Mount Hardware Kit (KT/5274) is
intended for (but not restricted to) use in rear-mount applications where clearance and
access might create difficulty. Kit components are listed in Section 2.2.
The DSU and IFU must be secured prior to installation into the equipment rack. The
hinge is mounted to the attached base plate of the DSU). The latch plates are mounted to
the attached base plate. The DSU can be directly mounted behind the SCU and the
prime, and backup modems that it services.
Note: This mounting requires the use of right-angle backshells for both the modem and
terrestrial data cables.
Assemble the DSU and IFU as shown in and as follows:
1. Position IFU on DSU and secure with four Phillips
 screws.
2. Install the Top Plate (FP/5153) to the IFU and secure with four 1/2-inch socket
screws and flat washers.
3. Install plates (FP/5154) to the equipment rack at the level to connect to the top
plate and secure with customer-furnished hardware.
4. Install base plate to the DSU and secure with four 1/2-inch socket screws and flat
washers.
5. Install right Plate (FP/5152-1) to the base plate and secure with two socket
screws and spacers.
6. Install left Plate (FP/5152-2) to the base plate and secure with two socket screws
and spacers.
7. Install the assembled DSU and IFU to the equipment rack and secure with
customer-furnished hardware.