SYSTEM 238 Installation Manual
4
ALPHA KEYPAD INFORMATION
The Alpha keypad uses a top viewing display. This means the display
reads most clearly when viewed from a top angle rather than straight
on or from below. Mounting the keypad at the light switch level and
adjusting the viewing angle gives the best viewing results.
+
When operated as a Super-
vised Loop, an open will be
reported as a Trouble.
Whether the system is armed
or disarmed. A short on a
Supervised Loop will be re-
ported as an alarm if the sys-
tem is armed, but will have no
effect if the system is dis-
armed.
-
Supervised Loop
N.C.
Trouble
N.O.
Alarm
Loop 8
Terminals C and Z8 are a standard loop that can also power 2-wire
devices. It supplies 10 - 12.5 VDC at 50 mA. Use Loop 8 to power 2-
wire glass-breaks and smoke detectors.
1.
Position the tamper switch inside the cabinet at the lower right
corner of the cabinet. For the wall tamper, the plunger should go
through the small hole in the back of the cabinet. For the door
tamper, the plunger should face out from the cabinet. Refer to the
drawing below.
2.
Connect the tamper switches in series and wire the tamper
terminals to a dedicated zone of the control panel.
3.
Program the dedicated zone as desired: NC, EOL, 24-hour, etc.
Once the tamper switches are installed, opening the cabinet door or
removing the cabinet from the wall will result in a tamper signal at the
panel.
TAMPER SWITCH INSTALLATION
C&K has designed the SYSTEM 238 cabinet to use the Ademco
Model 19 tamper switch. The cabinet is constructed in order to
accommodate two switches. One tamper for the cover and a second
switch for a wall tamper. To install the tamper switches:
Tamper Switches installed in the SYSTEM 238 cabinet
LEAD-ACID
BATTERY
PRINTED CIRCUIT
BOARD
WALL
TAMPER SWITCH
DOOR
TAMPER SWITCH
TELEPHONE INTERFACE
Connect the SYSTEM 238 to the phone line using
the 9.X PCF cord (not included). The cord has an
8-pin telco plug on one end. Plug the telco end
directly into the phone companies RJ31 or RJ38X
jack. Connect the flying leads to the SYSTEM 238
PCB as outlined in the next column:
KEYPAD SETUP
Voltage Variations
Output voltages at terminals 5, 7, and 8 may vary between 9.0 and
14.4 VDC (worst case), depending on the load, battery condition, and
AC line voltage.
SYSTEM START-UP
Five minutes after the panel is powered up, it will dynamically test the
standby battery by interrupting AC power for two minutes and monitor-
ing the battery under load.
Standby Battery Time with One LED Keypad
AUX POWER DRAIN*
50 mA
32 hours
STANDBY TIME
* Total power for all keypads, auxiliary, and Loop 8
150 mA
250 mA
500 mA
24 hours
16 hours
10 hours
TB1
If you replace the battery after a SYSTEM TROUBLE - LOW BATTERY
message, you must test the battery under load conditions. Press [*] [6]
[4] [#] to start the Dynamic Battery Test.
NOTE: Some keypads may use [SHIFT] and [ENTER] in
place of the [*] and [#] keys, respectively.
RJ-38X Wiring
Diagram
T
R
T1
R1
Incoming
Telco Line
1
2
3
4
8
7
6
5
T1
R1
T1 = Seized Tip
R1 = Seized Ring
Red
Green
Protector
Ring
Tip
Tamper Jumper
House
Phones
9.X PCF
The 9.X PCF has eight flying leads. Wire them to the PCB terminals
as follows:
GRAY = ring seized
GREEN = tip
RED = ring
BROWN = tip seized
BLUE and ORANGE = tamper
YELLOW and BLACK = not used
