User manual

ALARM-24 Series User Manual P/N 821542 Rev-A
22
© 2003 Wohler Technologies Inc. ALL rights reserved
Section 3: Technical Information
ALARM-24A (Analog) Interconnect Block Diagram
Rear
Panel
4-Channel
Alarm Engine
Channels
1-2-3-4
Input
Clip Indication (Red LEDs)
Front
Panel
Analog to Digital
Converter
4
3
X
Φ
Reset Button and Phase
Indication (Yellow LED)
Loss Indication (Red LEDs)
Clip
Phase
Loss
X
1
Φ
2
Loss
Phase
Clip
Clip Indication (Red LEDs)
Reset Button and Phase
Indication (Yellow LED)
Loss Indication (Red LEDs)
Chan.1-2 Chan.3-4
CH.1 CH.2 CH.3 CH.4
DIP Switch
Bal. Input
(CH.1-2)
Bal. Input
(CH.3-4)
3
&
4
Level Meter DSP Engine PCB
(919174)
Front
Panel
PCB
(919184)
Alarm Section 1 of 6
1
&
2
2 2 2 2
A
LARM-24 Analo
g
Interconnect Block Dia
g
ram
MicroComputer
Alarm
Sounder
I C
Clear All
Button
Reset
x6
2
Alarm
Relay
BCD Switch
-Alarm Out
-Alarm Reset In
-Unit Configure
RS232
4
Micro Controller PIC PCB (919183)
Alarm Relay and Sounder PCB (919180)
03/18/03 Rev-C
8 910
2
37564
1
DIP Switch
(Internal)