GAI-Tronics IPE2500A, IPE2500A-MLS Paging Encoder / Desktop Controller User and Installatoin Manual - Manual (Page 56)

Installation IPE2500A and IPE2500A-MLS Paging Encoder/Desktop Controller
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PB3 – Internal Diagnostics
Four internal diagnostic modes are available: (PB1) relay or MLS module diagnostics depending on the
board installed, (PB2) DC module diagnostics, (PB3) RS-232, and (PB4) keyboard. After entering the
Internal Diagnostics mode, they are accessed using the programming buttons as follows:
PB1 – Relay or MLS Module Diagnostics (depending on board installed)
Relay Module: This function is accessible via Main Diagnostics, then Internal Diagnostics ( PB3
). The
XRC0001A Relay Option Kit must be installed in the unit under test. This function allows the relay I/O
module to be exercised. The display indicates the status of:
 Inputs – IN
 Relay – OUT
By pressing any key (except
TRANSMIT
) starting at relay 1 and progressing up to relay 4, the relays close
and then open. The numeral 1 in the OUT position indicates the relay should be closed. LEDs on the
relay I/O module also indicate the status of each relay.
To exercise the inputs, each input can be grounded. This is indicated by a numeral 1 in the IN position
associated with the input. As each input is shorted to ground, the corresponding 1 in the IN position
indicates a 0.
Press
TRANSMIT
to exit the relay module diagnostics.
MLS Module: If the MLS module is installed (included in the IPE2500A-MLS or XML001A Kit) the
Line Select board diagnostic replaces the relay module diagnostics shown above. This diagnostic allows
the line select module to be exercised.
Button(s) Line Select Module Diagnostics Function:
Any button except
TRANSMIT.
By pressing any key, except
TRANSMIT
, starting at line 1 and progressing up to
line 4, each line is selected and the previous unselected. The display and
corresponding
PB1
through
PB4
LEDs indicate which line is currently selected.
Press
TRANSMIT
to exit the MLS module diagnostics.