Specifications

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Descriptions and Locations
Refer to Figure 4-1.
1. TEL INT SEL Switch Bank - Sets telephone interface type for the TEL LINE jack on the PCMTIM module
(see Section 5).
2. POWER - Indicates that power has been supplied to the module. One exists on each module.
3. TONE VOLUME - Controls the level of all tones produced by the PCM system.
4. BGM SRC VOLUME - Sets background music level for one mode of operation. Used only when an amplifier
without a music input is used as the paging amplifier (see Section 7).
5. NIGHT RING - This RJ11 jack provides connections to the internal night ringer for both 90V analog ring
signals and contact closure activation (see Section 5.6).
6. TEL LINE - Primary paging interface to telephone switch (see Section 5).
7. OVER RIDE - Secondary paging input with higher priority than TEL LINE input. Connects to either loop start
trunk or dry audio signal with contact closure (see Section 5.7).
8. PCMTIM Terminal Strip - Provides connections for background music source (one mode of operation only)
(see Section 7), ground start interface ground (see Section 5.3), and two sets of contact closures that change state
whenever a paging zone is active (see Section 11.11).
9. PCMCPU Terminal Strip - Provides connections to background music audio signals (see Section 7), system
expansion signals (see LUPCMADD manual), EM/SC signal trigger (see Section 9.1), clock resynchronization
(see Section 9.2), and auxiliary power supply input.
10. PCMTBM Terminal Strip - Provides connection to main paging amplifier (see Section 6).
11. PCMZPM Terminal Strip - Provides connections to paging speakers (see Section 8), separate local
background music source (see Section 7) and relay driver outputs (see Section 9.3).
12. OUTPUT Switch - Switch setting determines if PCMZPM module will be compatible with 70V (Hi) speaker
systems or self-amplified speakers (Lo). Locking plate guards against accidental changes in setting.
13. BGM Jumper Field - Jumpers control whether background music is inhibited to a specific zone or all zones
(see Section 7).
14. LPBGM VOLUME - Controls the level of background music in zones using self-amplified speakers. Works
only with system-wide BGM, no effect if local BGM source is used.
4. LUPCMALL Feature Callouts