MODEL 1582-03 Data Switch
1.0 General
1.1 Equipment Description
The 1582-03 Data Switch provides Auto, Manual, or Remote relay switching between CH1 and CH2 RS232C
data signals on pins 2 or 3, selectable, with pin 5 ground and the other pins of the DB9 connectors not
connected. Alarm conditions are either if data is lost for a preset 1 to 9 minutes on CH1, CH2 or with external
alarm contact closures. The 1582-04 has two switches in one chassis. Switching logic can be jumper selected
as follows:
1. CH1 Prime Mode - Switches from CH1 to the CH2 only if CH1 alarms and CH2 is good. Switches back
when CH1 no longer in alarm or both CH1 and CH2 are bad.
2. Latch to CH2 Mode - Latches to CH2 if CH1 alarms and CH2 is good. Return to CH1 only when Manual
Reset switch is pushed or Remote Reset pin is grounded and if no alarm on CH1.
3. Minimum AUTO switching, Initial Channel Select ( ICS) Mode - Switch stays on channel last selected
by Manual or Remote selection after return to AUTO. AUTO switching occurs only if current channel
alarms and other channel is clear.
If power is lost or first applied (as alarms at power up dictate), CH1 is selected. The Manual Select switch and
(when in AUTO) contact closures to Remote Select pins, select CH1 or CH2 independent of alarms. LEDs and
closures indicate alarms and switch selection of CH1 or CH2 and REMOTE or MANUAL operation.
Redundant power supplies.
SWITCH A
MODEL 1582
POWER
1 2
AUTO
CROSS TECHNOLOGIES, INC.
ON-
LINE
MANUAL
SELECT
REM
ON-
LINE
ALM
CH 1
CH 2
ALM
MAN
RESET
SWITCH B
AUTO
ON-
LINE
MANUAL
SELECT
REM
ON-
LINE
ALM
CH 1
CH 2
ALM
MAN
RESET
FRONT PANEL
AC1
AC2
DATA 2
1
J8
GND
DATA 1
DATA OUT
J103
J107
J106
FIGURE 1.1 Model 1582-03 Front and Rear Panels
SELECTED
DATA
1582-03 BLOCK
DIAGRAM
CH 1
DATA
CH 2
DATA
AUTO
CH 1
CH 2
CONTROL LOGIC
ALM
DET
CH1
ALM
DET
CH2
MANUAL
SELECT
1 2
REM.
1 2
ALM
1 2 1 OR 2
DATA ALARM
REM.
SW
RST
1 2
MON
M R
A E
N M
1582-03 Manual, Rev. C
Page 3
4/13/09
