Technisonic TDFM 136 User Manual

VHF/FM
DIGITAL
AIRBORNE TRANSCEIVER
MODEL TDFM-136
Installation and
Operating Instructions
Til Document No.
99RE255
Issue n/c
DECEMBER 1999
Technisonic Industries Limited
250 Watline Avenue, Mississauga, Ontario L4Z 1P4 Tel:(905)890-2113 Fax:(905)890-5338
3840 East Robinson Road, Suite 214, Amherst, New York 14228 Tel:(716)691-0669
CAUTION
This unit contains static sensitive devices. Wear a grounded wrist strap and/or conductive gloves when handling printed circuit boards.
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.
NOTE: This equipment has been tested and found to comply with the limits fora 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 instruction manual, 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 of f and on, the user is encouraged to try to correct the interference by one or more of the following measures:
S Reorient or relocate the receiving antenna S Increase the separation between the equipment and receiver S Connect the equipment into an outlet or circuit different from that to which the receiver is
connected.
S Consult the dealer or an experienced radio/TV technician for help.
WARRANTY INFORMATION
The Model TDFM-136, VHF/FM Digital Transceiver is under warranty for one year from date of purchase. Failed units caused by defective parts, or workmanship should be returned to:
Technisonic Industries Limited Technisonic Industries Limited 250 Watline Avenue 3840 E. Robinson Road, Suite 214 Mississauga, Amherst, Ontario L4Z 1P4 New York 14228
Tel: (905) 890-2113 Fax: (905) 890-5338 Tel: (716) 691-0669
A Page
Summary of DO-160C Environmental Testing for Technisonic Model TDFM-136, VHF Digital Transceiver
Conditions Section Description of Conducted Tests Temperature and Altitude 4.0 Equipment tested to categories B2 and
D1.
Vibration 8.0 Equipment is tested without shock
mounts to categories B, M and N. Magnetic Effect 15.0 Equipment is class Z. Power Input 16.0 Equipment tested to category B. Voltage Spike 17.0 Equipment tested to category B. RF Emission 21.0 Equipment tested to category Z.
1.1 INTRODUCTION
This publication provides operating and installation information on the TDFM-136, Digital Transceiver manufactured by Technisonic Industries Limited. The TDFM-136 is Project 25 (P25), Phase 1 compliant. The unit offers digital or conventional analog FM communications over an extended frequency range with selectable channel spacing and is intended for use (in the U.S.) only by government agencies or contractors thereto, who have obtained licensing for operation in the 136-150 MHz portion of the band. If the TDFM-136 transceiver is used in CANADA, operation is restricted to the following sub bands: 138-144, 148-148.99,
149.005-150.005 and 150.05-174 MHz. Furthermore the frequency agile transceiver is restricted to airborne use must not be operated as a base station in Canada.
1.2 DESCRIPTION
The TDFM-136, Transceiver is a frequency agile, fully synthesized airborne transceiver capable of operating in the 136.000 MHz to 174.000 MHz frequency range in 2.5 kHz increment s with either 25 kHz analog, 12.5 kHz analog channel spacing and P25, 12.5 kHz digital modulation on a channel by channel basis. The Transceiver can operate without restriction on any split frequency pair in the band and also incorporates a two channel synthesized guard receiver.
B page
SECTION 1
GENERAL DESCRIPTION
The TDFM-136 Transceiver provides 150 operator accessible memory positions, each of which is capable of storing a transmit frequency, receive frequency, transmit frequency CTCSS tone or DPL code, receive frequency CTCSS tone or DPL code, an alphanumeric identifier for each channel and in the TDFM-136, wideband (25 kHz analog) or narrowband (12.5 kHz analog) channel spacing assignment. The P25 mode (12.5 kHz digital) channels include both NAC and Talk Group capability.
Operating frequency and other related data are presented on a 48 character, two line LED matrix display. Data entry and function control are performed via a 12 button keypad. Preset channels may also be scrolled and scanned through keypad function activation.
1.3 PURPOSE OF EQUIPMENT
The TDFM-136, Digital VHF/FM Transceiver is designed to provide secondary airborne communications to facilitate operations which are typically performed in a low altitude environment. The transmitter section of this unit has a minimum of 8 watts and does not exceed 10 watts output power, which may be reduced by a front panel switch to 1 watt, in order to reduce interference to land based systems.
1.4 MODEL VARIATION
There are four variations of the Model TDFM-136 Transceiver. All units offer identical features and performance except for the following differences:
TDFM-136, P/N 981087-1 GREEN display and 28 Volt back lighting.
TDFM-136, P/N 981087-1 (5V) GREEN display and 5 Volt back lighting.
TDFM-136, P/N 981087-2 RED display and 28 Volt back ligting.
1-1
TDFM-136, P/N 981087-2 (5V) RED display and 5 Volt back lighting.
Both P/N's 981087-1 and 981087-2 are always provided with 28 Volt back lighting unless a specific request is made for 5 Volt AC operation.
1.5 TECHNICAL CHARACTERISTICS
Specification Characteristic
GENERAL
Model Designation: TDFM-136
Frequency Range: 136.000 to 174.000 MHz
Operating Modes: P25 CAI and conventional analog
Channel Spacing: 25 or 12.5 kHz
Physical Dimensions (including heatsink): Approx. 8.0" X 3.0" X 5.75"
Weight: Approx. 3.5 Lbs (1.6 Kg)
12.5/25 kHz conventional analog 12 KBPS FSK, 9.6 KBPS C4FM
Mounting: Panel Mount via Dzus fastners
Operating Temperature Range: -45EC to +70EC
Power Requirement:
Voltage: 28.0 Vdc, ± 15% Current: Receive - 0.7 A Max.
1 Watt Transmit - 1.3 A Max. 8-10 Watt Transmit - 2.0 A Max.
Frequency Selection: 150 memories programmed with:
a) Tx Frequency/Rx Frequency b) Tx/Rx CTCSS tone or DPL code c) 9 character alpha numeric title
Guard Receiver: 2 channels programmed with:
a) Tx Frequency/Rx Frequency b) Tx CTCSS tone or DPL code c) 9 character alpha numeric title
CTCSS squelch/encoder: All CTCSS tones available
DPL digital squelch/encoder: All standard DPL codes
DTMF encoder: All standard DTMF tones
Audio Output: 0.5 Watts into 600 ohms
Speaker Output: 2.5 Watts min. into 4 ohms
Back Lighting: 28 Volts (standard) or
5 Volts (specify)
1-2
Display Colour: Green (standard) or
DPL is a trademark of Motorola Corporation
1.5 TECHNICAL CHARACTERISTICS (continued)
MAIN RECEIVER
Sensitivity at 12 dB SINAD -116dBm
Adjacent Channel Selectivity -60dB (25 or 12.5 KHz)
Spurious Attenuation -70 dB
Third Order Intermodulation -70 dB
Image Attenuation -80 dB
FM Acceptance ± 6 KHz
Red (specify) NVG Optional
Hum and Noise Better than 45dB
Audio Distortion less than 5%
Antenna Conducted Emission less than -57dBm
GUARD RECEIVER
All specifications identical to main receiver.
TRANSMITTER
RF Power Output Lo -100mW to 1W (internal adjustment)
or hi-power; 10 watts.
Output Impedance 50 ohms
Maximum Deviation ±5 KHz (25 KHz mode) (In narrowband mode) ±2.5 KHz (12.5KHz mode)
Spurious Attenuation -90 dB below carrier level
Frequency Stability ± 2.5 ppm
Microphone Circuit Carbon or equivalent
Sidetone Output 0.5W (max) into 600S
Harmonic Attenuation -65 dB below carrier level
FM Hum And Noise -40 dB
1-3
Audio Input 50 mV at 2.5 KHz into
200 S input circuit for ±3.5KHz deviation, adjst.
Audio Distortion Less than 5%
SECTION 2
OPERATING INSTRUCTIONS
2.1 OPERATING FEATURES
The Technisonic TDFM-136 airborne FM transceiver is visually similar to the industry standard TFM­138, a two line by 24 character display is centered at the top of the unit, just below the display are six user controls on the left and a 12 key keypad on the right (refer to Figure 2-1). The TDFM-136 support the following features:
1. 150 memory positions which can each be programmed with a transmit and receive frequency with 25 or 12.5 kHz analog channel spacing, Tx/Rx CTCSS tones or DP L codes and a 9-character alphanumeric title. Or the memory positions can be programmed to P25 Digital mode (12.5 kHz) with or without a P25 Talkgroup.
2. 2 guard channels which can each be programmed with a Rx frequency with 25 or 12.5 kHz channel spacing, CTCSS Tx tone or DPL code and a 9-character alphanumeric title. Or either guard channel can be programmed to P25 Digital mode (12.5 kHz) with or without a P25 Talkgroup.
3. Scanning of programmed memories with selective memory scanning, in 5 scan lists.
4. Priority scan of memory channel 1, if desired.
5. Direct frequency entry mode.
6. Receive frequency simplex function.
7. Switchable RF output power between 1 watt and 8-10 watts.
8. Lockout of keyboard to prevent inadvertent entries.
9. Variable frequency mode to manually scan up and down in 2.5 kHz steps.
10. LED display variable dimming mode.
11. Selectable 90 second Tx time out feature.
12. Quick download of any of the 150 memory positions to the guard memories.
13. PC Memory Upload or download capability.
2.2 OPERATOR CONTROLS
The user controls comprise a main volume control – with integrated on/off switch - a guard volume control, a squelch defeat button, a MAIN/GD selection switch, a GD1/GD2 selection switch, and a high/low power switch. The keypad layout is a 3 by 4 matrix, the layout being similar to a telephone keypad, though the options are arranged differently.
2-1
2-2
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