GAI-Tronics IPE2500A, IPE2500A-MLS Paging Encoder / Desktop Controller User and Installatoin Manual - Manual (Page 58)

Installation IPE2500A and IPE2500A-MLS Paging Encoder/Desktop Controller
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PB3 – RS-232 Diagnostic
This function is accessible via Main Diagnostics, then Internal Diagnostics (
PB3
), and exercises the RS-
232 port TX and RX data. To run this test, disconnect anything connected to the programming connector
on the back of the unit, and short pins 2 and 7 of the connector.
Once the short is completed, this unit sends data on the TX wire for receipt on the RX wire. If the same
data is received on the RX wire, the unit continues to send data. If no data, or incorrect data is received,
the unit stops sending data and displays failure.
Note that this diagnostic does not guarantee standard RS-232 levels. If the diagnostic functions, but the
unit does not operate with a PC or printer, verify with an oscilloscope that the proper RS-232 levels are
present.
Press the
TRANSMIT
button to exit the RS-232 diagnostics.
PB4 – Keyboard Diagnostic
This function is accessible via Main Diagnostics, then Internal Diagnostic (
PB3
) and verifies that the
keyboard is operating correctly. After entering the keyboard diagnostic mode, the display shows:
KEYBOARD TEST
KEYCODE: XX
When any key is pressed (except
TRANSMIT
), the corresponding keycode is displayed. Refer to the
keycode table that follows:
Button Keycode (Hex) Button Keycode (Hex)
0–9 00–09 PB1 – PB4 30–33
* 0e ALERT 45
# 0f PAGE 44
TRANSMIT No code
(Will exit test.) CLEAR 47
MONITOR 11 SELECT 46
IC 13 DOWN 40
VOLUME
Down 20 UP 41
VOLUME
Up 21
Press
TRANSMIT
to exit the keyboard diagnostics.