Kingfisher KFSTARLB0001 Radio Fire Alarm Panel User Manual
King-Fisher Company, Inc Radio Fire Alarm Panel Users Manual
Users Manual
STAR
King-Fisher Company, inc.
2350 Foster Ave. Wheeling, Il. 60090— 6574
Phone (847)398-7100 Fax (847)255-1507
Phone (888)687-5324(US) Fax (877)687-5324(US)
E-MAIL: sales@kfci.us
WEBSITE: www.kfci.com
KFCi #75952, Revision 2
Radio Fire Alarm
User Manual
Page 1 of 14 KFCi #75952, Revision 3
King-Fisher Company, inc
STAR Radio Fire Alarm
User Manual
KFCi #75952
Table of Contents
Revision History ............................................................................................................................. 1
FCC Device Statements .................................................................................................................. 2
Introduction..................................................................................................................................... 2
STAR Operational Specifications............................................................................................... 3
Alarm Interface ....................................................................................................................... 3
Power Sources......................................................................................................................... 3
Indicators................................................................................................................................. 3
Adjustments ............................................................................................................................ 3
Radio....................................................................................................................................... 4
Environmental......................................................................................................................... 4
STAR Basic Connections ............................................................................................................... 4
AC Power.................................................................................................................................... 4
Antenna....................................................................................................................................... 4
Alarm Wiring.............................................................................................................................. 5
Battery......................................................................................................................................... 5
STAR Interface Module.................................................................................................................. 5
System Power Supply ................................................................................................................. 5
Connecting Alarm Inputs............................................................................................................ 6
Zone Programming ..................................................................................................................... 7
STAR Radio Transmitter Module...................................................................................................8
Programming the Transmitter.....................................................................................................8
Simple Interface.......................................................................................................................... 8
Hardware Errors...................................................................................................................... 9
King-Fisher Transmitter Programmer....................................................................................... 10
Table 1: STAR Transmitter Parameters................................................................................ 11
Figure 1: Transmitter Parameter Programming Screen – Field Level.................................. 14
Revision History
Rev Date Author Description
0 7/11/08 Gregory Lapin Initial Release
1 3/2/09 Gregory Lapin Changes based on FM testing
2 6/12/09 Gregory Lapin Changes required following FCC testing
3 6/29/09 Gregory Lapin Description of hardware error checking and Low/High band.
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FCC Device Statements
FCC ID: AGJ-KFSTARLB0001
WARNING: Changes or modifications not expressly approved by King-Fisher Company, inc
could void the user's authority to operate this equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
¾ Reorient or relocate the receiving antenna.
¾ Increase the separation between the equipment and receiver.
¾ Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
¾ Consult the dealer or an experienced radio/TV technician for help.
Introduction
The STAR Radio Fire Alarm (KFCi #99952) is a self-contained Auxiliary Signaling Device that
responds to contact closures from standard fire panels, emergency switch devices, supervisory
switch devices and auxiliary switch devices to generate an alarm message in a standard King-
Fisher KFRA-C receiving processing unit format and transmits that message by radio. The
STAR is contained in a NEMA-1 cabinet and derives power from a 120VAC circuit. It
maintains a backup battery, periodically checking its status and supplying charging voltage to
keep the battery fully charged. The STAR can operate from its battery in standby mode for 96
hours following a power failure. The STAR will generate a trouble message if it detects loss of
AC power, disconnection of the battery, a battery that does not hold a charge, or a break in any
of the input connections. To prevent spurious trouble messages, a confirmation wait time of 60
sec is applied. If the fault exists for at least 60 sec only then is a trouble message transmitted.
This prevents excessive trouble message signals during normal maintenance, such as changing a
battery or short duration power failures.
There are two basic units that make up the STAR subsystem. An Interface circuit controls the
power subsystem and monitors up to six Class B monitored inputs. It applies debounce logic to
signals on these inputs to prevent responding to external noise, such as that due to lightning
strikes in the area. When an alarm is warranted, the interface triggers the radio transmitter
control circuitry to initiate the transmission of the alarm message.
The radio circuitry monitors input signals and builds an alarm message that it transmits on a
preselected VHF radio frequency channel. Several alarm message formats that conform to an
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existing King-Fisher messaging standard can be selected. Message format specifics are selected
by the alarm technician using a laptop computer.
STAR Operational Specifications
Alarm Interface
Monitored Dry Contact Inputs 6
Monitored Local Energy Input 1
Input Termination Resistance 10 kΩ
Dry Contact Trouble Output 1
Ground Fault Detection Resistance < 100 Ω
Input Debounce Time 1 – 65535 msec
Power Sources
AC Voltage Range 80-135 VAC
AC Frequency 50-60 Hz
AC Current Draw < 0.5 A
AC Fuse 1A
Backup Battery Type Sealed Lead Acid
Backup Battery Voltage 13.0 V nominal
Backup Battery Standby Duration > 72 Hr (2.5 A-Hr, such as KFCi BP-1225)
> 96 Hr (5.0 A-Hr, such as KFCi BP-1205)
Backup Battery Recharge Duration < 24 Hr
Battery Fuse 2ASB
Low Battery Indication Threshold 12.6 V ± 0.1 V
Battery Cutoff Threshold 11.3 V ± 0.1 V
Indicators
AC Power Present Green LED on Interface Module
Power Trouble Flashing Yellow LED on Interface Module
Alarm Input Red LED, adjacent to each input on Interface Module
Input Trouble Yellow LED, adjacent to each input on Interface Module
Transmission in Progress Green LED, on solid, on Transmitter Module
Transmission Waiting Green LED, blinking, on Transmitter Module
Transmission in Progress Beeper on Transmitter Module
Adjustments
Battery Charging Voltage Potentiometer on Interface Module
Frequency Trim Potentiometer on Transmitter Module
Transmit Test Black Button on Interface Module
Program Transmitter Black Button on Transmitter Module
Interface Module Reset White Button on Interface Module
Transmitter Module Reset White Button on Transmitter Module
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Radio
Frequency Range: FCC
NTIA
72 - 76 MHz
138-174 MHz
Frequency Resolution 1 Hz
Frequency Stability ± 5 ppm
Spurious Emissions < -50 dBc
Power Output 0.5 – 0.8 watts peak
Modulation AM
Tone Frequency Range 50 Hz through 600 Hz
Tone Frequency Resolution 0.1 Hz
Tone Frequency Stability ± 5 ppm
Power Source 12 – 15 VDC
Power Source Fuse 1A
Current Draw – Standby < 100 µA
Current Draw – Transmission < 1A
Environmental
Temperature Range – Operational -40°C through 60°C
Temperature Range – Storage -40°C through 125°C
Humidity < 95% non-condensing
STAR Basic Connections
The STAR cabinet is usually mounted on a wall with external wiring brought in through conduit
connected through the sides or bottom of the cabinet. It is recommended that conduit not be
connected through the top wall of the cabinet. There are several basic connections:
AC Power
120V AC power, single phase, with a separate ground wire, is connected to the cabinet at a
terminal block in the upper left corner of the subplate. Hot, neutral and ground wires should be
inserted to the appropriately marked terminals and screwed down tightly. Wires can be any size
up to 10 AWG and can be either solid or stranded copper.
Antenna
There are two ways to connect an antenna to the STAR. All antennas and feedlines must be
50Ω. The STAR is shipped with a coaxial jumper wire connecting the transmitter output to a
BNC connector mounted in the upper right surface of the cabinet. A BNC (or BNX) antenna or
feedline can be attached to this connector. Alternately, a 50Ω coax feedline can be brought in
through a conduit attached to the sides or bottom of the cabinet and connected directly to the
BNC connector in the upper right corner of the STAR Transmitter board.
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Alarm Wiring
Supervised alarm wiring is connected to a terminal block on the left side of the STAR Interface
board. Termination requirements are described below.
Battery
A backup battery sits in the bottom of the cabinet and connects to the STAR Interface board with
a 3-pin Amp connector in the lower right corner. Different backup battery types may be used but
the basic requirements are as follows: a sealed lead acid battery must be used with a minimum
capacity of 2.5 A-Hr. The battery should be rated for both discharging and charging over the full
temperature range that the STAR cabinet will be subjected to. Typically, this is rated from -40°C
(-40°F) to +60°C (+140°F). Note that most gel cell sealed lead acid batteries are not capable of
operation over this temperature range.
STAR Interface Module
The STAR Interface Module (KFCi #66951) provides monitored contact closure inputs for up to
six connections. Monitoring is based on a 10kΩ EOL resistor, which must be installed across the
contacts. If an input is unused, an EOL resistor must be installed across those input terminals.
A seventh input can be used to monitor a local energy master box input. This input allows
connections to an existing FACP’s L.E. Box trip circuit, if desired. Jumper JP1 on the interface
module selects whether or not the local energy input is used. If not, the jumper must be in the
Disable position; otherwise it must be in the Enable position.
Each input is translated to a function code that is recognized by the King-Fisher KFRA-C
console. There are 10 possible function codes and each of the inputs causes one of those
function codes to be transmitted. There is no limitation on the translation and it is possible that
every input causes the same function code to be transmitted. A programmable debounce time,
measured in milliseconds, is also customizable for each input.
System Power Supply
The Interface module controls the power source for the STAR unit. AC line power is supplied to
the Interface after being fused and reduced in voltage by a transformer to 14-35 VAC. The
Interface module converts this to regulated DC, whose voltage is adjustable with potentiometer
R76. The desired operational voltage of the STAR is based on what is required to properly
charge the battery.
The Interface module monitors AC voltage and switches the DC power source from the AC-to-
DC power supply to the battery when it detects either a brownout condition or total loss of AC
voltage. Upon detecting these conditions the yellow Power Fault LED flashes every second.
When on battery power, the interface module continues to monitor both the AC voltage, to look
for return of AC power, and the DC voltage, to insure that the battery does not become so
depleted that it is damaged. There are two operational battery levels that are acted upon by the
STAR subsystem. When the battery reaches the Low Battery threshold, all messages sent by the
STAR are encoded to also report a Low Battery condition. Later, when the battery is further
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depleted and its voltage reaches the Battery Cutoff threshold, the STAR shuts itself down to
prevent excessive depletion of the battery (Note that even after the battery is not being drained
by the STAR, its internal resistance causes it to continue to lose charge slowly. It is important to
recharge the battery soon after shut down to prevent damage to its cells). In this condition the
trouble contacts are closed and can be used to indicate to the associated panel that the STAR is
no longer operational.
When AC is present, every two minutes the STAR removes the battery charging voltage and
tests to see if the battery is holding a charge. If not, the implication is either that the battery is
faulty and needs to be replaced or that the battery has been removed, one of its wires has broken,
or the battery fuse is blown. Any of these conditions requires attention and the STAR indicates
power trouble with the flashing Yellow LED and also transmits a trouble message to the KFRA-
C after the desired debounce delay has passed.
Connecting Alarm Inputs
A 12-position pluggable terminal strip connector on the left edge of the Interface module is used
to connect to dry contacts from a fire panel. Each pair of contacts should be connected to the
two sides of one dry contact. There is no preferred polarity to this connection. There are six
such “zones” in the 12 connections.
Two indicator lights are located immediately to the left of each pair of contacts on the pluggable
terminal strip connector: Red indicates when the input is in an Alarm condition (dry contact
closure), Yellow indicates when the input is in a Trouble condition (wire breakage or ground
fault). Ground faults are detected individually by each input zone.
All input zones must be connected to a 10 kΩ termination resistor. The termination resistor must
be placed at the dry contacts. If the input zone is not used the termination resistor leads must be
inserted directly into the pluggable terminal strip connector. If no termination resistor is
connected to an input that zone will be in trouble.
All of the trouble indications are combined to create a single input trouble condition. That can
be transmitted as any function in the wireless system with a response delay of up to 65 seconds.
Thus, the Interface module can be programmed not to respond to a trouble condition unless it
remains in trouble for a period of time. This feature serves to prevent spurious trouble messages
when work is being done on the system.
A separate two-contact pluggable terminal strip connector adjacent to the input connector gives
access to a dry contact trouble relay that can be wired back to an input on the fire panel. This
contact closure occurs when the STAR is in power trouble. It is normally-closed so if all power
to the STAR is lost, both AC loss and a dead battery, the panel will be able to detect this.
Another two contact pluggable terminal strip connector is used to connect to a Local Energy
Master Box trip circuit. There is no preferred polarity to this connection. When a Local Energy
Master Box connection is used, a jumper must be placed across the center and right hand posts of
J9. Alternately, if this connection is not used, the jumper must be moved to the center and left
hand posts of J9 to disable it.
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Zone Programming
The response to a zone alarm can be programmed to elicit many responses on the KFRA-C
receiving console. To customize the parameters of the interface board it is first necessary to
connect to the programming interface of the card. The computer is connected to the STAR
Interface module via an available COM-port, using a King-Fisher programming cable (KFCi
#57950). For computers that only have USB ports and no COM ports, a commercial USB-to-
COM port converter can be used.
Any program that allows users to read and enter characters that pass through a computer’s COM
port can be used to perform simple programming functions for the STAR Interface. Once such a
program is initiated and connected to the proper COM port press the PROGRAM button on the
STAR transmitter board until the green light on the board is illuminated. Once this occurs press
the ENTER key on the computer and the terminal emulator window should respond with a log-
on message:
King-Fisher Company Interface Programmer
Enter password to continue:
After entering the password followed by the ENTER key, you see the menu:
Fware Vers 1.06
Batt Mon 173 (> 87)
Zone Tone Debounce(msec)
0 (TRB) 7 20000
1 0 200
2 1 200
3 2 200
4 3 200
5 4 200
6 5 200
7 (LE) 6 200
8 (BAT) 7 30000
9 (PWR) 10 60000
A. InterAlarm Delay 2 sec
B. Battery Test Period 90 sec
Z. Chng Zone Defn
S. Store Chnges in Interface
X. Xmit Test Msg
Q. Quit
>
The adjustable parameters are defined as follows:
¾ InterAlarm Delay – the minimum time to responds between two alarms that come in
together.
¾ Battery Test Period – the amount of time that elapses between tests of the battery.
Should be less than 120 sec.
¾ Chng Zone Defn – defines the response to alarms and troubles from the input zones.
Each zone is customized with the tone that is generated when the input becomes active
and the “Debounce” delay in milliseconds that defines how long the active input must be
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stable before it is considered to be truly active. The Tones 0 though 9 are generally
predefined on the KFRA-C console. A special tone 10 generates a two-tone sequence
that is usually used to indicate power trouble. Any zone can be programmed to send any
tone.
o Zone 0 is the generic zone for all input troubles.
o Zones 1-6 are the input zones on connector J5.
o Zone 7 is the local energy input on connector J7.
o Zone 8 is activated when there is battery trouble.
o Zone 9 is activated when there is AC power trouble.
¾ Store Chnges in Interface – once the changes to the timing and zone definitions are
completed, the “S” function must be executed to make them permanent.
¾ Xmit Test Msg – transmits a test message through the transmitter, which send the number
of rounds defined for testing.
¾ Quit – when you are done looking at or updating the interface specifications this returns
the interface to operational status and the yellow LED goes off.
When in the menu if you do not type anything for 60 seconds, the interface times out and you see
the message:
Inactivity Abort - Returning to Normal Callbox Operation
If you want to continue programming interface options you should simply press the ENTER key
and log in again if this occurs.
STAR Radio Transmitter Module
The STAR Radio Transmitter module (KFCi #66950) is a microprocessor-controlled device that
responds to contact-closure style inputs, generates an appropriate alarm message and transmits
the message in a desired protocol on a software-generated VHF frequency.
Programming the Transmitter
Most of the specific details of the transmission format are selected from a software screen that is
run in a PC-compatible computer running Windows 98 or higher operating system. The
computer is connected to the Radio Transmitter module via an available COM-port, using a
King-Fisher programming cable (KFCi #57950). For computers that only have USB ports and
no COM ports, a commercial USB-to-COM port converter can be used.
There are two software interfaces available for both the Interface and the Transmitter boards.
The simple interface uses any terminal emulator, such as HyperTerminal, which is included with
most Windows®-based computers.
Simple Interface
Any program that allows users to read and enter characters that pass through a computer’s COM
port can be used to perform simple programming functions for the STAR Transmitter. Once
such a program is initiated and connected to the proper COM port press the PROGRAM button
on the STAR transmitter board until the green light on the board is illuminated. Once this occurs
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press the ENTER key on the computer and the terminal emulator window should respond with a
log-on message:
King-Fisher Company Callbox Programming Interface
Enter password to continue:
After entering the password followed by the ENTER key, you see the menu:
Fware Vers: 1.04
Batt Mon: 146 (> 75)
RF Pwr Sply Mon: 133 (betw 124 & 137)
DDS Pwr Sply Mon: 110 (betw 103 & 114)
Fwd RF Mon: 0 Ref RF Mon: 0
Time of Day: 00:01:01
Next Test: 00:00
Addr Dgts: 5 Fcn Dgts: 2
Box Addr: 07890
Freq (MHz): 72.02
Select:
C Set Time-of-Day Clock
A Chng Box Addr
T Chng Test Time
X Xmit Test Msg
Q Quit
>
It is from this menu that various operational parameters can be set. The Time-of-Day Clock (set
with the “C” function) and the Test Time (set with the “T” function) determine when this
transmitter will send its periodic test. The unique Box Address (set with the “A” function)
should also be set into each transmitter. A Test Message can be sent, using the “X” function to
confirm that this transmitter’s signal is seen by the receiving console.
If you do not type anything in this menu for 60 seconds, the interface times out and you see the
message:
Inactivity Abort - Returning to Normal Callbox Operation
When this happens, you need to log on again to continue programming the board.
The timing information that is programmed into the clock circuit is maintained by a backup
capacitor, which will allow the information to be kept for approximately 3 days. Over longer
periods of time the time-of-day and test time will have to be re-entered.
Hardware Errors
Three hardware errors are monitored by the microprocessor and when detected will prevent the
transmitter from operating. When any of these hardware errors is detected the transmitter shuts
down all circuitry that it can and sends a continuous stream of characters out of its serial port. It
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does so infinitely until the problem is corrected by human intervention. Connecting a terminal
program to the serial port, as describe above, will show text that indicates the specific problem
that was detected.
When the transmitter is first started up, or reset, it scans the entire program memory and
compares a checksum of the values in it to the checksum that was calculated when the device
was originally programmed. If these are different the program memory is assumed to be
corrupted and the processor prints the message: “Bad Checksum” repeatedly until the problem is
corrected.
Every time the transmitter is called upon to transmit an alarm, trouble or test message it sets up
the RF circuitry with the proper parameters. It then reads back the RF programming and if there
is a discrepancy the processor stops trying to transmit and prints the message: “RF Circuitry
Error” repeatedly until the problem is corrected.
After the transmitter sets up the RF circuitry but before it transmits anything it checks to see if
any RF energy is being sent to the antenna. If so, this indicates a hardware error that would
cause the transmitter to tie up the frequency when it is not meant to send a message. In this case,
it shuts down power to the RF circuitry and prints the message: “Unintended RF Transmission”
repeatedly until the problem is corrected.
King-Fisher Transmitter Programmer
A higher level software package that is used to program the transmitter is started by double-
clicking on the “KF Transmitter Programmer” icon on the desktop or alternately by selecting the
same software under Start - All Programs - King-Fisher – Transmitter Programmer.
Before the program starts, a small screen that asks for a password appears on the display. The
Transmitter Programmer has three functional levels: Factory, Maintenance, and Field. The
parameters that can be adjusted are different for each level (see Table 1 and Figures 1, 2 and 3).
Prior to using the Transmitter Programmer, it may be necessary to identify which COM port is
used to connect to the Transmitter. This is performed by clicking on the Tools menu on the top
line of the program screen and then clicking on COM port. A list of COM ports (COM1 through
COM8) is displayed. Click on the appropriate COM port number for your hardware. A check
mark will appear next to the selected COM port, which will stay set unless it is purposely
changed to another port.
Once the cable is connected between the PC and the transmitter, the Radio Transmitter module
must be put into program mode to affect its programming. This is done by pressing the
PROGRAM button located on the Radio Transmitter module and then clicking on the “Connect
to Transmitter” button on the PC programmer screen. A successful connection will refresh the
Firmware Version number and power supply monitor voltages along the right hand side of the
program window with information obtained from the transmitter.
When the Radio Transmitter is in Program mode it is not able to function as an alarm transmitter.
In case the Program button is pushed accidently or Program mode is not exited, a timer in the
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transmitter automatically exits from Program mode and returns the transmitter to normal use if
there is no activity over the COM port connection for 1 minute. Be aware that this may also
occur before programming is complete and it will be necessary to put the transmitter back into
program mode and reconnect the program to the transmitter as described above if this happens.
Table 1: STAR Transmitter Parameters
Accessibility is from the three different functional levels, each accessible with a different
password. “S” means that the parameter can be set from a given level. “V” means that the
parameter can be viewed from a given level but not changed. A blank field means that the
parameter cannot be changed or viewed at that functional level.
STAR Transmitter
Parameter Description Factory Maintenance Field
Firmware Version The version number of the
firmware that is currently loaded
into the transmitter.
V V V
Last SWR The Standing Wave Ratio
measured that last time a signal
was transmitted. A high number
means there might be a problem
with the feedline or antenna.
The best value is 1. If 0, recent
data are not available.
V V V
Battery Voltage The battery voltage measured
the last time a signal was
transmitted. This is not
meaningful if power is supplied
by AC voltage.
V V V
3.3V Supply Voltage The measured value of the 3.3V
supply. Should be within 5%. V V
1.8V Supply Voltage The measured value of the 1.8V
supply. Should be within 5%. V V
Frequency (MHz) The frequency that is used to
transmit the alarm (must match
the frequency for the entire
alarm system). This value can
only be set at the factory or by
an authorized distributor;
proper transmission must be
confirmed after this value is
changed.
S V V
Transmitter Address The numerical address of this
transmitter. See “# Addr Digits”
for more information
S S S
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STAR Transmitter
Parameter Description Factory Maintenance Field
# Addr Digits The number of digits in the
Transmitter Address (must
match the setting for the entire
system).
S S V
# Fcn Digits The number of digits used to
send alarm function codes (must
match the setting for the entire
system).
S S V
# Alarm Rounds The number of times each alarm
message is transmitted. This
value, usually 3, may be dictated
by regulatory standards.
S S
# Test Rounds The number of times each test
message is transmitted. S S
Time Between
Rounds (Round 1-2
and Round 2-3)
The number of seconds that
elapse between sending multiple
rounds of Alarm or Test. These
values are automatically
generated randomly based on
the “Transmitter Address” but
can also be forced to any values
between 2 sec and 12 sec if
desired.
V V V
Next Test Time The time, in 24-hour clock
format, that the next test will be
sent.
S S S
Current Time The current local time, in 24-
hour clock format. See
“Synchronize with Computer
Time”
S S S
Synchronize with
Computer Time
When checked, the current time
written to the transmitter is
equal to the time set in the
computer. When checked, the
“Current Time” box is not
visible.
S S S
Time Between Tests
(Hours, Mins)
Set the time that elapses
between transmitting an
automatic test message. Usually
this is set to 24 hours, 0 min
S S S
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STAR Transmitter
Parameter Description Factory Maintenance Field
Use P-Tone for
Repeater
When checked, a P-Tone is
transmitted before each
message, enabling re-
transmission by a King-Fisher
Redundant Repeater
S S S
Send Checksum When checked, a checksum of
each message is calculated and
transmitted following the
message. The receiver must be
set accordingly.
S S S
Enable Return to
Normal
When checked, a message is
sent when a previously sent
alarm or trouble is cleared. The
receiver must be set accordingly.
S S V
Security Panel Check this box when using the
STAR with a Security Panel
(NOT a Fire Alarm). This
control silences the audible beep
that usually occurs with every
transmission.
S S S
Input Type Select the input circuitry that is
used to trigger the transmitter.
For the STAR this should be set
to “Combo Contacts”
S S S
Intertransmit Delay The number of seconds that
must elapse between the end of
one message and the beginning
of the next. This is usually set
to 60, as required by FCC
regulations when they apply.
S
Tone Length The length of time that each
tone is transmitted under normal
conditions. This is usually set to
60 msec and changing it may
cause an unpredictable reaction
by the receiver.
S
Low Battery Length The length of time that each
function tone is transmitted
when the battery level is low.
This is usually set to 120 msec
and changing it may cause an
unpredictable reaction by the
receiver.
S
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Figure 1: Transmitter Parameter Programming Screen – Field Level
This programming level is used by personnel at a site to set the box identification numbers and
test times. Note that the simple programming method may be easier to use for this purpose.