Siemens GCP5000 Instruction & Installation Manual page 321

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7.3.1.3 Application Installation, 7A355-f
See Figure 7-6 for Tuned Receiver Coupler, 7A355-f application installation drawings. The
coupler terminals are connected as follows:
Terminals A & B connect to the wire leads that are connected to the shelter surge equipment
terminals which are in turn connected to the appropriate gauge twisted pair track leads that
connect to the rails.
Terminals C & D connect to the wire leads connected to "RX –" and "RX +" on the GCE Lower
10-pin Connector
Twisted pair track wires running from the shelter surge equipment that is connected to the
Tuned Receiver Coupler, 7A355-f to the rails via may be #9 AWG for distances of up to 100 ft.
(30.5 m). For distances between 100 – 300 ft. (30.5 – 91.4 m) in length, track wires should be
#6 AWG.
For distances greater than 300 ft. (30.52 m) but less than 2000 ft. (609.6 m), the Tuned
Receiver Coupler, 7A355-f should be replaced by the Line to Receiver Coupler, 7A388. The
7A388 should be used in conjunction with either the Receiver Line to Rail Coupler, 7A377-1-f, or
the Receiver Line to Rail Coupler, 7A377-2-f (see paragraphs 7.3.4.1 and 7.3.4.4, respectively).
7.3.2 Tuned Receiver Coupler, Hi Z, 7A366-f
7.3.2.1 Equipment Description, 7A366-f
Maximum track distances will be reduced by at least 30% in applications
using the Tuned Receiver Coupler, Hi Z, 7A366-f.
The Tuned Receiver Coupler, Hi Z, 7A366-f couples the phase shift overlay signal from the
track to the receiver. The 7A366-f coupler provides an input impedance of 5 ohms, enabling
other receivers on the track to be operated from the same transmitter. The coupler must always
be of the same frequency as that set on the GCE transmitter and receivers.
The coupler assembly consists of a tubular PVC plastic enclosure with mounting brackets at the
base. There are four AREMA binding posts on the top of the assembly that provide connections
to the circuits housed within the sealed unit (see Figure 7-7).
7.3.2.2 Mounting Dimensions, 7A366-f
Mounting Dimensions for the Tuned Receiver Coupler, Hi Z, 7A366:
Dimensions:
3.50 inches (8.89 centimeters) in diameter
7.75 inches (19.69 centimeters) high (to top of AREMA binding posts)
Weight:
3.5 pounds (1.59 kilograms) approximate
SIG-00-22-02
Version: B.1
NOTE
7-7
JUNE 2022 (Revised September 2022)
AUXILIARY EQUIPMENT