Like Address Code Frequency Repetition; Different Address Code Frequency Repetition; Like Address Code Frequency Repetition Using Non-Bypassed Insulated Joints; Frequency Assignments In Multiple Track Territories - Siemens GCP5000 Instruction & Installation Manual

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2.2.3.1

Like Address Code Frequency Repetition

For PSO Modules with like addresses (A, C, D, E, or F), frequencies can be repeated on the
same track when separated by at least 10,000 ft. (3048 m) and one set of non-bypassed
insulated joints (no type of insulated joint couplers used around the insulated joints).
2.2.3.2

Different Address Code Frequency Repetition

Identical frequencies may be used on either side of non-bypassed insulated joints (end – to -
end track circuits) provided different address codes are used.
2.2.3.3

Like Address Code Frequency Repetition Using Non-Bypassed Insulated Joints

For PSO Modules with like addresses (A, C, D, E, or F), frequencies can be repeated without
restriction on the same track when separated by two sets of non-bypassed insulated joints
providing each set of insulated joints is separated by a minimum of 3,000 ft. (914.4 m).
2.2.3.4

Frequency Assignments in Multiple Track Territories

Normal caution must be exercised in assigning and setting multiple track addresses and
frequencies. In multiple track territory frequency assignments must follow a pattern that avoids
using the same frequency on adjacent tracks.
Since it is not possible to meet this requirement in three- and four-track territory with available
PSO frequencies, the address coding scheme described in Section 2.2.3.3 can be employed
here as well. Each track uses a separate frequency with alternating track circuits assigned
different address codes and separated by a set of non-bypassed insulated joints.
2.2.3.5

Multiple Track Highway Crossings

Multiple track highway crossing approaches can use group 1 frequencies on one track (track
number 1) and group 2 frequencies on the other track (track number 2). Since two frequencies
from each group are required at each crossing when all frequencies have been used, the same
frequencies may be repeated but this time using the group 2 frequencies on track number 1 and
group 1 frequencies on track number 2. Continue to alternate this pattern as required. For
further details, contact Siemens Application Engineering.

2.2.4 Island and Crossing Receiver Frequencies

The PSO Module receivers and Island frequencies used in the Crossing Assembly are fully
compatible; however, the same frequency must not be used in a receiver approach and the
island.
SIG-00-22-02
Version: B.1
GENERAL GCP5000 (GCE) APPLICATION INFORMATION
2-11
JUNE 2022 (Revised September 2022)