2.1.2 Afo Frequency And 3000/4000 Family Gcp Frequency Compatibility; Pso Module Standard Frequency Compatibility; Table 2-4 Pso Module Standard Frequency And Model 3000/4000 Family Gcp Frequency Compatibility - Siemens GCP5000 Instruction & Installation Manual

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2.1.2 AFO Frequency and 3000/4000 Family GCP Frequency Compatibility

Audio Frequency Overlay (AFO) equipment such as Siemens's PSO Module, Harmon's AFTAC
II units, and Union Switch and Signal's AFO units can be utilized within Model 3000/4000 GCP
approaches. The tables below detail the compatibility of each manufacturer's equipment.
2.1.2.1

PSO Module Standard Frequency Compatibility

Table 2-4 depicts the frequency compatibility of the PSO Module Standard frequencies with the
frequencies used by Model 3000 or Model 4000 families of Grade Crossing Predictors.
Table 2-4 PSO Module Standard Frequency and
Model 3000/4000 Family GCP Frequency Compatibility
PSO Module
Standard
Frequencies
SIG-00-22-02
Version: B.1
156
285
430
645
Group 1
Frequencies
970
1450
2140
3240
211
348
525
790
Group 2
Frequencies
1180
1770
2630
4000
Compatible
GENERAL GCP5000 (GCE) APPLICATION INFORMATION
Model 3000/4000/5000 GCP
Frequencies (Hz)
1 1 2 2
8 1 5 1 8
6 4 6 1 5
INCOMPATIBLE
2-5
JUNE 2022 (Revised September 2022)
3 4 5 6 7 9
4 3 2 4 9 7
8 0 5 5 0 0