ZETRON CellPhone Detector Plus Bedienungsanleitung
WARRANTY
Zetron warrants that all equipment manufactured by or sold under Zetron label is
free from defects in material and workmanship at the time of shipment. For your
convenience, Zetron may purchase and supply items manufactured by others.
This will be disclosed to you. In these cases other warranties may apply. Consult
with Zetron for specific details. Zetron’s warranty extends one year from date of
shipment and covers parts and labor. Buyer must provide written notice to Zetron
within the warranty period of any defect. If the defect is not the result of improper
use, service, maintenance or installation, and if the equipment has not been
otherwise damaged or modified after shipment, Zetron shall either replace or repair
the defective parts or replace the equipment or refund the purchase price at
Zetron’s option, after return of such equipment by buyer to Zetron. Shipment shall
be paid for by the buyer. No credit shall be allowed for work performed by the
buyer. Equipment found to be not defective shall be returned at buyer’s expense
and testing and handling expense shall be borne by the buyer. Out-of-warranty
repairs will be invoiced at the current Zetron hourly rate plus the cost of needed
components.
LIMITATION OF LIABILITY
Zetron makes no representation with respect to the contents of this document
and/or the contents, performance, and function of any accompanying software and
specifically disclaims any warranties, expressed or implied, as to merchantability,
fitness for purpose sold, description, or quality.
Further, Zetron reserves the right to revise this document or the accompanying
software and to make changes in it from time to time without obligation to notify
any person or organization of such revisions or changes.
This document and any accompanying software are provided “as is.” Zetron shall
not under any circumstances be responsible for any indirect, special, incidental, or
consequential damages or losses to the buyer or any third party arising out of or
connected with the buyer’s purchase and use of Zetron’s products or services.
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INTRODUCTION
The CellPhone Detector Plussenses the radio frequency (RF)
transmissions from nearby cellular telephones, personal
communication service (PCS) phones, two-way radios, and
other wireless communication devices. When a transmission is
detected, an “Alarm” cycle begins that includes a voice
message requesting users to turn off their communication
devices.
Because the sensitivity of the CellPhone Detector Plus is fully
adjustable and the unit can be powered by an AC adapter or
batteries, and many features can be switched on or off as
needed, the CellPhone Detector Plus can be adjusted to suit
almost any facility or application. In addition, the Alarm Output
and Audio Output on the CellPhone Detector Plus can be used
to generate remote alarms and extend alarm messages into
other areas.
This guide provides detailed information about the CellPhone
Detector Plus. For best operation, please carefully read all the
information in this guide prior to using or installing the unit.
OVERVIEW
Studies show that many types of sensitive electronic
equipment malfunction when exposed to radio energy. Any
common transmitter, such as a cellular telephone or two-way
radio, emits this energy.
Many healthcare institutions, utility company control rooms,
and manufacturing organizations have already moved to ban
cellular phones, PCS and other wireless radio transmitters
throughout their facilities. Others restrict transmissions near
particularly sensitive equipment.
The CellPhone Detector Plus helps enforce such policies by
constantly monitoring for the presence of cellular phone, PCS
and two-way radio transmissions. When a transmission is
detected, an alarm sounds. The alarm consists of an audio
message (beeps plus voice) and a bright red flashing light.
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When the transmitter is turned off or moves outside the
coverage area of the CellPhone Detector Plus, the alarm
sequences end.
TYPICAL APPLICATIONS
In addition to guarding against interference effects from hand-
held transmitters, the CellPhone Detector Plus can also help
enforce restrictions designed to eliminate eavesdropping. This
can be unintentional transmissions in secure areas as well as
intentional abuses.
The following typical applications describe the recommended
placements and threshold settings for the CellPhone Detector
Plus.
Small to Medium Size Room
In a small control room, hospital room, or meeting room, place
the CellPhone Detector Plus close to the sensitive equipment,
but away from outside windows.
Set the threshold to MEDIUM.
Sensitive Equipment
If a specific piece of equipment is susceptible to radio
transmissions, place the CellPhone Detector Plus on that piece
of equipment, a nearby wall or the cart that carries the
equipment.
Set the threshold to NEAR or MEDIUM.
Large Areas
If placed in the center of a large area, a single CellPhone
Detector Plus can monitor an area up to 15 by 15 meters. For
some large areas, it may be necessary to use multiple
CellPhone Detector Plus units to obtain complete coverage.
Set the threshold to FAR.
Hallway to Critical Area
When the CellPhone Detector Plus is used to monitor a large
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critical area and/or multiple pieces of equipment, place an
additional CellPhone Detector Plus in the hallway leading to
the area.
Set the threshold to NEAR.
FEATURES & CONTROLS
The features and controls you need to be familiar with are
shown below.
AC
ALERT
TEST/
MUTE
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1. GRILLE PANEL This removable panel covers the user
adjustments and protects the alarm
speaker.
2. POWER ON/OFF This switch turns the unit ON when
ready for use.
3. FOUR-
POSITION DIP
SWITCH
There is a set of four DIP switches
located above the ON/OFF switch.
These switches, in order from left to
right, control the following functions:
VOICE I/O:
UP: The alarm is a series of beeps
followed by a voice message. This is
useful when self-enforcement is
desired.
DOWN: The alarm consists of beeps
only. Useful to alert facilities
personnel.
PWR-SPK:
UP: The speaker in the unit sounds
when in alarm mode.
DOWN: Silences the speaker. This is
useful if only a flashing light is desired
or if the remote alarm or audio output
is being used.
Note: Regardless of the position of
this switch, the audio alarm will output
through the audio jack on the side of
the unit.
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3. FOUR-POSITION
DIP SWITCH
(continued)
FLASH:
UP: The ALERT LED flashes during
each alarm cycle.
DOWN: The ALERT LED does not
flash during alarms. This is useful if
the remote alarm output is being used
and it is desired the unit be as
unobtrusive as possible.
AUTO-REG:
UP: In addition to its normal operation,
the CellPhone Detector Plus will
recognize and alarm on short duration
radio transmissions such as cellular
telephone registration signals. See
“Auto-Registration ...” on page 9 for
more details on the operation of this
function.
DOWN: The Auto-Registration mode
is not activated and short duration
transmissions are ignored.
4. SENSITIVITY
ADJUSTMENT This adjustment controls the coverage
area in which the CellPhone Detector
Plus will detect transmissions. When
set at NEAR, for a typical cellular
phone, the detection range is 1-2
meters. When set at FAR the typical
detection range is 20 to 30 or more
meters.
5. ALARM VOLUME This adjustment controls the volume
of the audio alarm.
6. SPEAKER
GRILLE This black cloth protects the speaker
behind it. Do NOT press or poke this
cloth.
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7. ALERT LIGHT During an alarm, this light blinks very
brightly. During non-alarm conditions
a shorter, dimmer “wink” occurs
periodically (every 18 to 24 seconds)
to indicate the unit is ON and working
properly.
8. TEST/MUTE When the CellPhone Detector Plus is
in a non-alarm state, pressing this
button simulates an alarm condition
and activates the alarm. This is useful
for checking the integrity of the unit
and the volume setting.
During an alarm, pressing this button
puts the CellPhone Detector Plus into
an audio alarm mute mode that lasts
for 90 seconds. Pressing this button
while the CellPhone Detector Plus is
in the mute mode reactivates the
audio alarm.
9. AC LIGHT When an external power source,
normally an AC wall adapter, is in use
this light will light when the CellPhone
Detector Plus is ON. During battery
operation the light will not be on.
10. AUDIO OUT See “Outputs” on page 7 for more
details.
11. ALARM OUT See “Outputs” on page 7 for more
details.
12. DC POWER
JACK This requires 9 to 12 volts DC with
300 mA minimum.
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NOTE
If the alarm has been sounding continuously for more than
90 seconds the CellPhone Detector Plus automatically
enters a Mute Mode in which the audio is silenced and, if
the FLASH switch is UP, the only indication of an alarm is
the front panel flashing light. The Mute Mode lasts for
about 90 seconds but can be canceled by simply pressing
the TEST/MUTE button.
OUTPUTS
The CellPhone Detector Plus has two outputs: audio and
alarm. Both output jacks are located on the side of the unit.
For a more robust connection there is a screw-terminal strip
near the battery holder inside the unit. See the diagram below.
Terminal Strip Location
++
+ +-
- -
-
ALARM
OUT GND AUDIO
OUT
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Alarm Output
The Alarm Output can be used to remotely alert personnel to
an on-going alarm. For example, this output could be wired
back to a security office, nurse’s station, control room, or
trigger an external alarm system.
The Alarm Output is an open collector transistor. When no
alarm is in progress the output impedance is very high. When
an alarm is on-going, the output goes into a low impedance
state of 66 ohms.
Even if the RF signal has terminated prior to the end of the
alarm message, the Alarm Output stays in the low impedance
state for the entire length of the alarm message. At the end of
the message the CellPhone Detector Plus checks to see if an
RF signal is still present. If no RF signal is present the alarm
output returns to the high impedance state. This allows the
alarm output to be used as a trigger to count the number of
times RF has been detected as well as an indicator for the
length of time the alarm has been active.
Alarm Output
Connector 2.5 mm mono-audio jack, tip is
output, sleeve is ground
Maximum external
applied voltage 24 volts
Maximum continuous
current sink 10 mA
Audio Output
The Audio Output can be used to input the alarm directly into a
public address system, extend the alarm so that it can be
heard from several locations, or amplify the audio for
excessively noisy areas.
When the audio jack is in use, the audio message can still play
through the unit’s speaker. The internal audio amplifier,
however, is not used with the audio out.
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Audio Output
Minimum load
impedance 16 ohms
Audio output DC coupled
Connector 2.5 mm mono-audio jack, tip
is output, sleeve is ground
If the audio out load impedance is at the minimum (16 ohms)
some decrease in volume at the speaker within the unit can
occur. To avoid this, connect the audio out to a load of several
hundred ohms.
AUTO-REGISTRATION AND OTHER SHORT
TRANSMISSIONS
Cellular telephones communicate with the cellular network by
sending short duration transmissions to identify their location
within the network. These transmissions are called
Auto-Registration signals and can occur anytime the cellular
phone is ON.
For analog cellular phones these Auto-Registration signals
occur about every 30 minutes and last for only about 125 ms.
When a cellular phone is turned on it checks an internal
counter to see when it last sent this signal. Only if 30 minutes
has passed, or the phone has moved into a new cell, will the
cellular phone emit an Auto-Registration signal within the next
few seconds.
Cellular phones that use one of several digital formats as well
as PCS phones may register less often than an analog phone.
Some only register at the time the phone is turned off. Also,
cellular phones respond when they are paged for an incoming
call. They do this by sending out a short message similar to a
registration signal. This tells the cellular network that the phone
is ready to take a call and a ring sequence begins.
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