MODEL 1582-650 RF Switch
1.0 General
1.1 Equipment Description
The 1582-650 RF Switch provides Auto, Manual or Remote relay switching between CH1 and CH2 RF signals.
Alarm conditions on CH1 and CH2 are either a contact closure to ground or an open (selectable). The logic
controls one single pole, double throw RF switch. Switching logic can be 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 - Switches to CH2 if CH1 alarms and CH2 is good. Latches to CH2. Push Manual
Reset or ground Remote Reset pin to return to CH1 if it has no alarm.
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 clear.
When power is lost, channel one is selected. The Manual Select switch and (when in AUTO) contact closures to
Remote Select pins, select CH1 or CH2 independent of alarms. LEDs indicate alarm and switch conditions for
CH1 and CH2 and REMOTE or MANUAL operation. Redundant power supplies provided.
STATUS
ALARM
HISTORY
HISTORY
RESET
ALARM
SWITCH
MANUAL
SELECT
CH1
AUTO
CH2
CH2
ONLINE
MANUAL REMOTE
SWITCH
RESET
CH1
ONLINE
MODEL 1582
SWITCH
2
1
2
1
POWER
2
1
C
ROSS
T
ECHNOLOGIES INC.
FRONT PANEL
AC1
GND
J7
AC2
J1
A1
J2
A
J3
A2
1
14
REAR PANEL
FIGURE 1.1 Model 1582-650 Front and Rear Panels
SWITCH A
SWITCHED RF
CONTROL
LOGIC
AUTO
CH 1
CH 2
SWITCH
RESET
1 2
ALARM
1 2
REMOTE
REMOTE
SW. RST
SWITCH A1 (RF)
SWITCH A2 (RF)
1 2
MON
M
A
N
R
E
M
FIGURE 1.2 Model 1582-650 RF Switch Block Diagrams
1582-650 Manual, Rev. C
Page 3
01/26/10