ATS R2000 Manuel utilisateur
RECEIVER MODELS R2000/R2100/R4000
User’s Manual
Table of Contents
INTRODUCTION 1
RECEIVING PROCEDURES 1
CONNECTIONS 2
INTERACTING WITH THE RECEIVER 4
RECEIVER CONTROLS 4
Receiver Models R2000 and R2100 5
Receiver Model R4000 8
RECEIVER INDICATORS 11
PROGRAMMING THE RECEIVER 13
To Add a Frequency to Memory 13
To Delete a Frequency from Memory 14
To Program All Frequencies into the Memory 14
To Delete All Frequencies from Memory 15
To Choose the Scan Rate 15
SCANNING FREQUENCIES STORED IN MEMORY 16
To Start Scanning 16
To Delete a Frequency from Memory while Scanning 16
To Rapidly Move through Frequencies Programmed in Memory 16
To Stop Scanning 16
RECEIVER OPERATIONS 17
INTERPRETING THE DATA 19
POWER CONSIDERATIONS 19
MAINTENANCE 20
APPENDIX A - WARRANTY 21
APPENDIX B - PROCEDURE FOR TUNING TRANSMITTERS 22
APPENDIX C - ADJUSTING THE THRESHOLD CONTROL 23
APPENDIX D - QUESTIONS ?? 24
APPENDIX E - RECEIVER SPECIFICATIONS 25
copyright© 1993 by Advanced Telemetry Systems, Inc. (ATS) All rights reserved. No part of
this manual may be reproduced in any form (electronic, mechanic, photocopy, or other)
without prior permission in writing from ATS.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2)
This device must accept any interference received,
including interference that may cause undesired
operation.
INTRODUCTION
Thank you for purchasing an Advanced Telemetry Systems’ receiver. Our receiver is a
radio frequency receiver which comes in a 2 MHz or 4 MHz version. The receiver can be
programmed to scan frequencies or you can manually tune it. There are three models of
our scientific receiver. Table 1 demonstrates the differences of the three.
MODEL CHANNELS SIGNAL
DETECTION
METHOD
MEMORY
BANKS
COMPUTER
INTERFACE
R2000 2000 AUDIO ONLY 1 NO
R2100 2000 AUDIO/TONE
DECODER
1 YES
R4000 4000 AUDIO/TONE
DECODER
4 YES
Table 1 - Differences in Receiver Models
As you notice, only model R2000 does not contain a tone decoder. A tone decoder is
needed when the receiver is used with a data collection computer to create an automatic
data collection system.
RECEIVING PROCEDURES
Operationally, the receiver works by acting as a filter to select a very narrow window in
the frequency spectrum. The position of this filter in the frequency spectrum is
determined by the frequency selection (tuning). The receiver rejects signals and noise
outside the filter window and passes signals and noise within the window. Additionally,
the receiver translates the signal to a frequency within the hearing range. For all receiver
models, you can listen to what the receiver is picking up. Otherwise, you can use the
tone decoder to see what the receiver is picking up. If the tone decoder picks up a
transmitter’s signal, a plus sign (+) will flash on the receiver’s display to the left of the
frequency. In order for the tone decoder to work, the audio control must be turned off.
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Advanced Telemetry Systems, Inc. R01-02-A Receiver Manual
Using either the tone decoder or the audio, the receiver can be tuned manually or
programmed to scan a set of frequencies at a set interval.
CONNECTIONS
ATS receivers have five connectors except the model R2000 which has four. Figure
1 displays those connectors.
·Antenna Jack
To connect an antenna to the receiver use the antenna jack. This jack requires
a BNC connector to attach an external antenna.
·Battery Charge/External Power Jack
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Receiver Manual R01-02-A Advanced Telemetry Systems, Inc.
Figure 1 - Receiver Connections (Model R4000 shown)
The Charge/Ext Power jack serves two purposes, as its name states. To
charge the receiver’s internal batteries, plug the charger in here. When the
receiver’s batteries are not charging, this jack can be used to power the
receiver externally.
Using an external power cord, connect the external power source (11.5 -
15VDC) to the receiver. When an external power source is used, the receiver
automatically switches from internal to external power. With Model R2000
receivers, you can hear a click when the receiver’s relay switches from its
internal batteries to an external power source.
NOTE: Having external power connected to the receiver will not recharge the
receiver’s internal batteries. To recharge the receiver’s internal batteries, plug
the battery charger ATS supplied into the receiver’s CHG EXT PWR jack
when the receiver is not operating.
An external power source can be a deep cycle marine battery, a solar panel, a
cigarette lighter in a car, a gell cell battery, etc. Please note that ATS can
provide you with the different cables needed to connect to external power
sources.
Be sure the receiver is off when disconnecting the external power source. If
the receiver is on, the receiver will revert to internal power and drain its
batteries.
NOTE: Standard receivers use a 3-pin external power cord. Older receivers
(purchased before April 1991) with the “computer controlled on/off” option
require an external power cord with a 5-pin connector. These receivers have a
toggle switch in their record jack (labeled “REC” and located in the lower
right-hand corner of the receiver’s faceplate).
·Computer Interface Connector
If you are using a Data Collection Computer (DCC), connect the receiver to
the DCC via a ribbon cable attached to this connector.
The DCC will be programmed to control the receiver’s operation, interpret
the data received by the receiver, and store this data along with the date and
time. Having a DCC interfaced with the receiver produces an automatic
datalogging system.
·Headset Jack
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Advanced Telemetry Systems, Inc. R01-02-A Receiver Manual
To listen to the receiver’s audio signal through a headset, plug the headset
into the receiver’s headset jack. When a headset is connected, the receiver’s
speaker is disabled. The headset jack accepts a standard 1/4" monaural plug.
Standard stereo plugs are also acceptable if both head pieces are wired to the
tip. Impedance into the headset jack is approximately 8 ohms. Headsets with
impedances of 8 to 2000 ohms may be used.
·Recorder Jack
Plug a 0-1mA external recorder (ex. 0-1mA Model 288 Rustrak recorder)
into the receiver’s recorder jack . This jack requires a 1/8" diameter plug
(switchcraft #750). The recorder jack connects the external recorder in series
with the receiver’s signal meter for chart recording. The external meter
option is designed to read accurately for a 100 ohm external meter.
INTERACTING WITH THE RECEIVER
Most receivers contain three types of toggle switches on their faceplates. The three
types are locking toggle, momentary toggle, and regular toggle switches. To move a
locking toggle switch from its current position, you must pull up on the toggle and then
move it. Locking toggles are often used for the on/off power control so that the power
cannot be turned on or off inadvertently. A momentary toggle switch can be moved from
its current position by pushing on it but it will always flip back to its former position.
This type of toggle switch is always used for delta tune, add/del, and adv/dec switches
because you do these functions one at a time. The regular toggles are moved by pushing
them into the desired position. Regular toggles will stay in the position you move them
to.
RECEIVER CONTROLS
This two-part section discusses each of the receiver’s controls. The first part covers the
receiver models R2000 and R2100. The second part covers the receiver model R4000.
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Receiver Manual R01-02-A Advanced Telemetry Systems, Inc.
Receiver Models R2000 and R2100
Refer to Figure 2 for the locations of the controls.
·Add/Delete Switch
Use this switch to add or delete a frequency to the memory when the bypass
switch is in any position. Or, use this switch to program all frequencies into
the memory or to delete all frequencies from the memory at once by holding it
in the add or delete position (when the bypass switch is in the middle
position).
·Audio Control
Controls the audio level of the speaker or headset. Maximum audio level
occurs with the control positioned fully clockwise.
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Advanced Telemetry Systems, Inc. R01-02-A Receiver Manual
Figure 2 - Receiver Controls for Models R2000 and R2100
Model R2100
The audio control acts as a switch to turn the tone decoder on and off. When
the audio control is off, the tone decoder is activated. The plus sign on the left
side of the frequency display then indicates signal presence. The plus sign is
normally on while the audio is on.
·Bypass Switch
Transfers control of receiver frequency selection from the memory to the
frequency selectors or vice versa. It also switches the receiver from low to
high band. If the frequency appears as four digits (with the first digit being a
“1"), the receiver is in the high band. If the frequency appears as three digits,
the receiver is in the low band. With the bypass switch in the middle position,
the receiver’s frequencies are selected by the memory.
Attention: When using a Model R2100 receiver with a Data Collection
Computer (DCC) , set the bypass switch to either the HI or LO position.
·Delta Tune Switch
Use this switch to tune the receiver’s frequency up or down by 4 kHz.
·Frequency Selectors
Use the three frequency selector knobs to tune the last three digits of the
desired frequency. The frequency can be selected in 1 kHz increments over a
1 MHz range. The megahertz range (or the first digit of the frequency) is
selected by setting the bypass switch.
·On/Off RF Gain Control
This control has two functions. First, it operates as a switch to turn power on
and off. Second, it controls the gain of the intermediate frequency (IF)
amplifiers. Maximum gain occurs with the control positioned fully
clockwise. The sensitivity of the receiver is set with this control.
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Receiver Manual R01-02-A Advanced Telemetry Systems, Inc.
·Scan Advance/Decrement Switch
Allows you to rapidly move through the frequencies programmed in
memory; moving forwards or backwards through the frequencies in
numerical order. This switch overrides the scan rate and stop scan switches.
·Scan Rate Selector
Adjusts the length of time the receiver will monitor a frequency programmed
in the receiver’s memory. This control is effective only when the bypass
switch is in the center or bypass position. A range of 2 seconds to 16 minutes
is available.
·Stop Scan Switch
Stops the memory scan from advancing to the next frequency when placed in
the upper position. The receiver will remain on the current frequency until
the switch is lowered.
·Tone Decoder Threshold Control
Model R2100
To control the threshold of the tone decoder, turn this control clockwise to
increase sensitivity (reduce the threshold level) or counterclockwise to
decrease sensitivity (increase the threshold level).
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