Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
7.2.2.3 INTERCONNECTED CHASSIS MOUNTED ON SHIPPING RAILS
Equipment to be installed in a rack or cabinet at the customer's site is mounted on shipping rails at the
factory. To remove the shipping rails and mount the equipment, proceed as follows:
1. Place the equipment as close to the front of the rack or cabinet as possible, with the rear panels
of the equipment facing the front of the rack or cabinet.
2. Remove all the screws securing the shipping rails to the equipment.
3. Slide the equipment into the rack or cabinet.
4. Install and tighten screws to all panels to secure the equipment in place.
7.2.2.4 VENTILATION
The specified operating temperature range for M-DACS equipment is -20
o
C to + 65
o
C (-4
o
F to
+149
o
F). Operation at higher temperatures may affect system reliability and performance. Systems
installed in enclosed cabinets should be ventilated to keep the temperature inside the cabinet within
limits.
7.2.3 WIRING
The following procedure assumes that the M-DACS Shelves will be completely wired before turning
up any T1 or payload circuit. Basic wiring diagrams are shown in Figures 7-3 and 7-4. Also refer to the
"as supplied" drawings furnished with the equipment and the system drawings placed in Section 18 of
this manual at the factory.
1. Connect a ground wire from the GND ground stud on the rear of the Main Shelf to station
ground.
This is a required connection.
2. Connect an external ringing generator or loop current source to the RING GEN terminal on the
input power terminal block on the rear of the M-DACS Shelf.
This step is optional. It is only necessary if the shelf contains one or more Foreign
Exchange Station End modules, (used for Automatic Ring Down or Off Premise
Extension) that use a common ring generator or that the number of circuits exceed
the required power the shelf can supply.
3. Connect the signaling battery to the SIG BAT terminal on the input power terminal block on
the rear of the Shelf.
This step is optional. It is only required if the shelf contains more than two Foreign
Exchange Station End modules (VF-16 or VF-16A), four-wire E&M voice modules
using Type II signaling, or (in some cases) Foreign Exchange Office End modules.
Check with RFL Customer Service if you are not sure whether this battery is
necessary).
If SIG BAT is the same voltage as the dc power voltage, then SIG BAT may be
connected to the -BAT terminal instead.
M-DACS-T1 RFL Electronics Inc.
October 25, 2004 7-5 (973) 334-3100
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