Instruction manual
MODEL 1582-22L RF Protection Switch
1.0 General
1.1 Equipment Description
The 1582-22L RF Protection Switch provides Auto, Manual or Remote latched relay switching between CH1
and CH2 RF signals from .95 to 2.15 GHz including 10 MHz and DC power for attached LNB or SSPB
devices. Alarm conditions on CH1 and CH2 are either a contact closure to ground or an open (selectable). The
logic controls two separate RF switches, A and B. 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 is clear.
When power is lost and when power is applied (as alarms at power up dictate), the selected channel remains on.
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 are provided.
STATUS
ALARM
HISTORY
HISTORY
RESET
ALARM
SWITCH
MANUAL
SELECT
CH1
AUTO
CH2
CH2
ONLINE
MANUAL REMOTESWITCH
RESET
CH1
ONLINE
MODEL 1582
SWITCH
21
21
POWER
21
CROSS TECHNOLOGIES INC.
FRONT PANEL
AC1
GND
J7
AC2
J4
A2
J5
A
J6
A1
114
J1
B2
J2
B
J3
B1
REAR PANEL
FIGURE 1.1 Model 1582-22L Front and Rear Panels
SWITCH A
RF+10M+DC 1
SWITCH A
SWITCHED
RF+10M+DC
AUTO
CH 1
CH 2
SWITCH
RESET
1 2
REM
1 2
ALM
REM
RESET
SWITCH A
RF+10M+DC 2
SWITCH B
RF+10M+DC 1
SWITCH B
SWITCHED
RF+10M+DC
SWITCH B
RF+10M+DC 2
CONTROL
LOGIC
1 2
MON
MAN
REM
FIGURE 1.2 Model 1582-22L RF Switch Block Diagrams
1582-22L Manual, Rev. C Page 3 06/13/11