Installation
Refer to Tables 3-1 and 3-2 for Digital Chassis Power Supply terminal assignments.
Table 3-1. Digital Chassis Terminal assignments, input power terminal strip
Terminal Label
Description (Refer to Figures 3-2 and 3-3)
+ (+BAT)
Station battery positive. Voltage must match input requirements of power supply module.
- (-BAT)
Station battery negative. Voltage must match input requirements of power supply module.
+RF (+BAT)
For connection to RF chassis.
-RF (-BAT)
For connection to RF chassis.
-SB (SIG BAT)
For connection to an external signaling voltage source when signaling voltage is required by
one or more channel modules. SIG BAT is normally jumpered to NEGATIVE BAT when
the dc power voltage is the same as the desired signaling voltage. The SIG BAT input may
also be connected to an external loop current generator. (1)
RG (RING GEN)
For connection to an external ring generator referenced to SIG BAT. Connect one side of the
ring generator to the RING GEN terminal, and the other side to the SIG BAT terminal. (1)
1.
To prevent damage to the equipment, the source connected to this input must be externally fused or current-
limited.
Table 3-2. Digital Chassis Terminal assignments, Alert and Alarm contacts terminal strip
Terminal Label
Description
ALERT NO
ALERT relay N.O. contact (normally-open).
ALERT COM
ALERT relay COM contact (common).
ALERT NC
ALERT relay N.C. contact (normally-closed).
ALARM NO
ALARM relay N.O. contact (normally-open).
ALARM COM
ALARM relay COM contact (common).
ALARM NC
ALARM relay N.C. contact (normally-closed).
Table 3-3. RF Chassis Terminal assignments, power connections and Alarm contacts
Terminal
Label
Description
V+
Station battery input +
V-
Station battery input -
C
RF power supply fail relay COMMON contact.
NO
RF power supply fail relay NORMALLY OPEN contact. (Normally open with RF power supply ON)
NC
RF power supply fail relay NORMALLY CLOSED contact. (Normally closed with RF power supply ON)
RFL 9508D UCC
RFL Electronics Inc.
June 14, 2011
3-10
(973) 334-3100
