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INA 15092:I 05/30/01

Figure 2.6-3 EIA-485 Circuit Maximum INA/AMG Configuration

An AMG-1 cannot be installed in another network node if one or more AMGs has been installed in an INA. More than one

INA may contain AMGs if the INAs are not located in the same group (see Chapter Three, Groups and Linking). Up to four

AMGs may be installed in one INA (see Figure 2.6-3).

The Remote Page function cannot be used when an AMG and FFT have been installed in an INA. An ACM-16AT

annunciator (set to address 1) is required to operate the AMG(s) and speaker circuits in the INA. Points on the ACM-16AT

may act as shadow points (see About Annunciator Operation with the INA in Chapter Two). This annunciator may be

programmed into another node but does not physically need to be installed at any other node. When there is no AMG

installed in any INA, the use of AMGs and ACM-16AT annunciators at the local panel is permitted in the usual fashion. See

the Voice Multiplex System Manual.

2.7 POWERING THE INA

The INA may be powered from one of three different sources, a Main Power Supply MPS-24A/MPS-24AE mounted in the

same cabinet, a MPS-24B/MPS-24BE in the same cabinet, or an externally mounted power supply.

The EIA-485 Reference (TB1-1) on the INA must be connected to any ACS device that is not within the same cabinet or is

not powered by the INA power supply. Connect TB1-1 of the INA to: ACM-16AT/LDM-32 at TB1-4, AMG-1/E power

supply (MPS-24A/MPS-24AE) at TB2-2, SCS-8L at TB1-4, LCD-80 at P1-4, RPT485W Ref. A at TB1-5, RPT-485W Ref. B at

TB2-5, or RPT-485WF Ref. A at TB1-5.

TB1

Notifier INA User Manual

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