Technisonic TFM-138 VHF/FM TRANSCEIVER User Manual D PDF 98re243 7

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VHF/UHF FM
AIRBORNE TRANSCEIVER
MODEL TFM-500
(P/N’s 971083-1,3 -VHF Guard Module)
Installation and
Operating Instructions
Til Document No.
98RE243
Rev. N/C
Issue 7
August 2002
Technisonic Industries Limited
240 Traders Boulevard, Mississauga, Ontario L4Z 1W7
Tel:(905)890-2113 Fax:(905)890-5338
www.til.ca
CAUTION
This unit contains static sensitive devices. Wear a grounded wrist strap and/or conductive gloves when
handling printed circuit boards.
NOTE: This equipment has been tested and found to comply with the limits for
a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. 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 communcations. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user
will be required to correct the interference at his own expense.
Warning:
Changes or modifications not expressly approved by Technisonic Industries could void
the user’s authority to operate the equipment.
WARRANTY INFORMATION
The Model TFM-500, 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
240 Traders Boulevard
Mississauga,
Ontario L4Z 1W7
Tel: (905) 890-2113
Fax: (905) 890-5338
A Page
Summary of
Transceiver:
DO-160C Environmental Testing for Technisonic Model TFM-500,
VHF and UHF
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 A.
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.
Installation Approval Note
Presently no TSO standard exists for airborne FM transceivers. To make it easier for installation
agencies to provide their customers with an approved installation supported by an effective
Airworthiness Approval, Technisonic has secured Supplemental Type Certificate (STC) Approvals (both
US and Canadian) on its Airborne FM products for many helicopters currently being delivered in the
US and Canada as well as a number of single engine fixed wing aircraft. The above referenced DO160C test data is also on file and available from Technisonic to support approval requirements in
airframes for which Technisonic does not possess an STC.
Approved aircraft types are listed in the attachments to the formal STC documents. These STC's are
the exclusive property of Technisonic and require the written authority of Technisonic for their use.
To assist Factory Authorized Technisonic Dealers in the certification process, we have placed copies
of our Canadian and US STC's on our web site along with a letter of authorization for their use. These
documents may be downloaded and used as support for the technical submission to FAA or Transport
Canada. Only factory authorized dealers/installers are permitted to download and make use of these
documents on behalf of their customers (end users) in support of regulatory agency approval. Please
refer to the Technisonic web site www.til.ca for the latest issue of available STC’s and letter of
authorization for use.
B page
TABLE OF CONTENTS
Title
Paragraph
SECTION 1
1.1
1.2
1.3
1.4
1.5
SECTION 2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
2.14
SECTION 3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.7.1
3.7.2
3.7.3
3.7.4
3.7.5
3.7.6
3.7.7
3.7.8
3.7.9
3.8
3.9
3.10
3.11
3.12
3.13
Page
GENERAL DESCRIPTION
Introduction . . . . . . .
Description . . . . . . .
Purpose of Equipment
Model Variation . . . .
Technical Summary . .
1-1
1-1
1-1
1-1
1-2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Instructions . . . . . . . . . . . . . . . . . . .
Programming Instructions . . . . . . . . . . . . . . . .
Priority and Selective Memory Channel Scanning
Scanning Function . . . . . . . . . . . . . . . . . . . . .
Direct Frequency Entry Mode . . . . . . . . . . . . . .
Receive Frequency Simplex Function . . . . . . . . .
Keyboard Lockout Function . . . . . . . . . . . . . . .
Variable Frequency Mode Function . . . . . . . . . .
LED Display Variable Dimming Mode . . . . . . . . .
90 Second Transmitter Time Out Feature . . . . .
Quick Guard Programming Feature . . . . . . . . . .
Programming CTCSS Tones . . . . . . . . . . . . . . .
PC Memory/Programming Download Capability . .
2-1
2-3
2-4
2-4
2-5
2-5
2-5
2-6
2-6
2-6
2-6
2-6
2-7
2-8
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Packing Log . . . . . . . . . . . . . . . . . . . . . . .
Transceiver Installation . . . . . . . . . . . . . . . . . . . . . . .
Installation Kit - Contents . . . . . . . . . . . . . . . . . . . . .
Antenna Installation . . . . . . . . . . . . . . . . . . . . . . . . .
Installation - Pin Locations and Connections . . . . . . . . .
Wiring Instructions . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Power +28VDC . . . . . . . . . . . . . . . . . . . . . . . .
Main Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PTT (Ground Keying) . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Back Lighting . . . . . . . . . . . . . . . . . . . . .
Audio Outputs (600 and 4 Ohms) . . . . . . . . . . . . . . . .
Audio Output Ground . . . . . . . . . . . . . . . . . . . . . . . .
Mic Signal Input . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory Up/Memory Down . . . . . . . . . . . . . . . . . . . .
Data Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal Programming and Guard Enable/Disable Jumper
Transmitter Power Adjustments . . . . . . . . . . . . . . . . .
Transmitter Microphone Level Adjustment . . . . . . . . . .
Main and Guard Squelch Adjustment . . . . . . . . . . . . . .
Transmitter Deviation Adjustment . . . . . . . . . . . . . . . .
Guard Receiver Audio Limit Feature . . . . . . . . . . . . . .
3-1
3-1
3-1
3-1
3-1
3-1
3-3
3-3
3-3
3-3
3-5
3-5
3-5
3-5
3-5
3-5
3-5
3-7
3-7
3-9
3-9
3-9
OPERATING INSTRUCTIONS
INSTALLATION INSTRUCTIONS
LIST OF TABLES
Table No.
3-1
Title
Page
9-pin D and 15-Pin D Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
LIST OF ILLUSTRATIONS
Figure No.
2-1
2-2
3-1
3-2
3-3
3-4
3-5
3-6
Title
Operator's Switches and Controls . . . . . . . . . . . .
PC Up/Download Cable - Wiring Diagram . . . . . . .
Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Connections . . . . . . . . . . . . . . . . . . . . . .
Interal Enable/Disable Jumper Locations . . . . . . .
External Adjustment Access Holes . . . . . . . . . . .
VHF Deviation Adjustment Potentiometer Location
UHF Deviation Adjustment Potentiometer Location
ii
Page
. 2-3
2-12
. 3-2
. 3-4
. 3-7
. 3-8
3-10
3-10
SECTION 1
GENERAL DESCRIPTION
1.1
INTRODUCTION
This publication provides operating and installation information on the TFM-500 Transceiver.
manufactured by Technisonic Industries Limited. The unit offers 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 138-150 MHz
portion of the band. If the TFM-500 transceiver is used in CANADA, VHF operation is
restricted to the following sub bands: 138-144, 148-148.99, 149.005-150.005 and 150.05174 MHz.
1.2
DESCRIPTION
The TFM-500, Transceiver is a frequency agile, fully synthesized airborne transceiver
capable of operating in the 138 to 174 MHz and 403 to 512 MHz frequency range in 2.5 kHz
increments with either 25 kHz or 12.5 kHz channel spacing. The Transceiver can operate
without restriction on any split frequency pair in either band and also incorporates a two
channel VHF synthesized guard receiver.
The TFM-500 Transceiver provides 200 operator accessible memory positions per band, 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 wideband (25 kHz) or narrowband (12.5 kHz) channel spacing
assignment. Operating frequency and other related data are presented on a 96 character, four
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. Data
may also be entered via a Windows 95/98/NT/2000/ME based computer with the provided
software and optional PC Up/download cable, P/N 993390-1.
1.3
PURPOSE OF EQUIPMENT
The TFM-500, VHF/UHF FM Transceiver is designed to provide secondary airborne
communications to facilitate operations which are typically performed in a low altitude
environment. The transmitter sections of this unit have a minimum of 8 watts and do 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 TFM-500 Transceiver. All units offer identical features
and performance except for the following differences:
TFM-500, P/N 971083-1
GREEN display and 28 Volt back lighting.
TFM-500, P/N 971083-1 (5V),
GREEN display and 5 Volt back lighting.
TFM-500, P/N 971083-3
RED display and 28 Volt back ligting.
TFM-500, P/N 971083-3 (5V),
RED display and 5 Volt back lighting.
Both P/N's 971083-1 and 971083-3 are always provided with 28 Volt back lighting unless a
specific request is made for 5 Volt AC operation.
1-1
1.5
TECHNICAL CHARACTERISTICS
Specification
Characteristic
GENERAL
Model Designation:
TFM-500
Frequency Range:
138 to 174 and 403 to 512 MHz
Tuning Increments:
2.5 kHz
Operating Mode:
F3E simplex or semi-duplex
Channel Spacing:
25 or 12.5 kHz
Physical Dimensions (including heatsink):
Weight:
Approx. 8.0" X 3.0" X 5.75"
Approx. 5.1 Lbs (2.3 Kg)
Mounting:
Panel Mount via Dzus fastners
Operating Temperature Range:
-40EC to +60EC
Power Requirement:
Voltage:
Current:
28.0 Vdc, ± 15%
Receive - 1.0 A Max.
1 Watt Transmit - 2.0 A Max.
8-10 Watt Transmit - 3.2 A Max.
8-10 Watt Dual Trans - 5 A Max.
Frequency Selection:
200 memories per band
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:
Audio Outputs:
All standard DTMF tones
0.5 Watts into 600 ohms
Speaker Output:
2.5 Watts min. into 4 ohms
Back Lighting:
28 Volts (standard) or
5 Volts (specify)
Display Colour:
Green (standard) or Red (specify)
DPL is a trademark of Motorola Corporation
1-2
1.5
TECHNICAL CHARACTERISTICS (continued)
VHF RECEIVER
Sensitivity at 12 dB SINAD
Better than 0.35 µV
Adjacent Channel Selectivity
-75 dB (25 kHz)
-70 dB (12.5 kHz)
Spurious Attenuation
-90 dB
Third Order Intermodulation
-70 dB
Image Attenuation
-80 dB
FM Acceptance
± 6 kHz
Hum and Noise
Better than 45 dB
Audio Distortion
less than 5%
Antenna Conducted Emission
less than -70 dBm
UHF RECEIVER
Sensitivity at 12 dB SINAD
Better than 0.35 µV
Adjacent Channel Selectivity
-70 dB (25 kHz)
-60 dB (12.5 kHz)
Spurious Attenuation
-80 dB
Third Order Intermodulation
-70 dB
Image Attenuation
-60 dB
FM Acceptance
± 6 kHz
Hum and Noise
Better than 40 dB
Audio Distortion
less than 5%
Antenna Conducted Emission
less than -70 dBm
GUARD RECEIVER
All specifications identical to VHF receiver
1-3
VHF and UHF TRANSMITTER
RF Power Output
1 watt or 10 watts
Output Impedance
50 ohms
Maximum Deviation
(In narrowband mode)
±5 kHz (25 kHz 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
Audio Input
50 mV at 2.5 kHz into
200 S input circuit for
±3.5kHz deviation, adjst.
Audio Distortion
Less than 5%
1-4
SECTION 2
OPERATING INSTRUCTIONS
2.1
FEATURES
The equipment has several important operating features which provide maximum flexibility,
performance and versatility. These features include:
1. VHF and UHF bands that can be configured to be operated independently or as a single
unit.
2. The unit can be set up as a crossband repeater, linking a VHF and UHF frequency in both
directions.
3. 200 memory positions per band which can each be programmed with a transmit and
receive frequency with 25 or 12.5 kHz channel spacing, Tx/Rx CTCSS tones or DPL codes
and a 9-character alphanumeric title.
4. 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.
5. Scanning of preprogrammed memories with selective memory scanning, in 5 scan lists.
6. Priority scan of memory channel 1, if desired.
7. Direct frequency entry mode.
8. Receive frequency simplex function.
9. Switchable RF output power between 1 watt and 8-10 watts.
10. Lockout of keyboard to prevent inadvertent entries.
11. Variable frequency mode to manually scan up and down in 2.5 kHz steps.
12. LED display variable dimming mode.
13. Selectable 90 second Tx time out feature.
14. Quick download of any of the VHF memory positions to the guard memories.
15. PC Memory Upload or Download capability.
16. Configuration Menu - Pressing ENTER, RCL and FUNC together while turning the radio
on will put it into configuration mode.The programming features
affected are:
a) DPL - Can be turned on or off with th MUP and MDN (4 and 7) keys. This only
removes the DPL entry step from the programming sequence and does not
stop memories that already have DPL codes from working. This also applies to
the rest of the on/off configurable items.
b) Scan - Can be disabled. Selecting FUNC and SCAN will do nothing if Scan is off. The
scan list indicator (+) will still display if was previously programmed.
c) Rx CTCSS - Can be turned on or off from the programming sequence. This affects only
the CTCSS tones for receive.
d) FUNC 7 - Can be turned on or off. When off, the main memory channel can not be
dumped into one of the guard channels using function 7.
e) LAST MEM - If set to on, the last memory channel on the display will be what comes
up when the radio is turned on. If set to off, the last memory that changes
were made to will be what comes up when the unit is switched on.
f) DUALMODE - If set to on, the UHF and VHF bands are operated independently and
simultaneously. The radio is shipped with this feature OFF.
2-1
g) SIDETONE - The TX audio circuit becomes active allowing you to adjust the sidetone
level with the VHF volume knob. When thedesired level is reached, press
ENTER and this level will be set for both VHF and UHF bands. The factory
setting is 23.
Note: You must set the side tone every time you go through the configuration
menu since the position of the knob is taken as the new level regardless of
whether or not you made an adjustment.
FIGURE 2-1
Operator's Switches and Controls
2-2
2.2
OPERATING INSTRUCTIONS (See Figure 2-1)
1. Switch power on by turning the main volume clockwise. Depending how the radio is
configured, either the last programmed or last displayed frequencies will appear on the
screen. The transceiver is now in normal operating mode.
2. Adjust the audio level by adjusting the VHF, UHF and GUARD volume knobs.
3. Pressing the squelch defeat button will open all receivers to confirm they work.
4. Read the display. The top line will indicate which VHF memory is selected followed by a
"+" if the memory position is included in a scan list, an alphanumeric message, and the
frequency of the VHF receiver. A small "n" before the frequency indicates 12.5 kHz
narrowband channel spacing is in effect on this memory position. In the receive mode, the
frequency is followed by an "RT" if a RX CTCSS tone or RX DPL code is programmed, or
an "RX" if no Receive tone/code is programmed. Similarily, in the transmit mode either a
"TT" or "TX" is shown after the frequency. The second line shows the same information
for the UHF band. The third line indicates information about the guard receiver.
5. Only TX CTCSS tones or TX DPL codes may be programmed for the guard receiver.
At the beginning of each line, an LED indicates open squelch.
6. Set the VHF/UHF/GD switch to the desired band.
7. Set the G1/G2 switch to the desired guard channel.
8. Set the HI/LO switch to the desired RF output power.
9. Select the desired memory by using the M.UP and M.DN buttons, or the RCL button
and a three digit number followed by ENTER.
10. To transmit DTMF tones, use the keyboard keys while holding the PTT button on the
microphone. There is a 5 second PTT delay after pressing a key so that you may press
several DTMF keys in sequence without having to hold the PTT. The keyboard returns to
its normal function when the PTT is released.
The display always shows the status of both receivers and the transmitter. The light at the left
of each line indicates which receiver is receiving. The display also indicates the memory
channel in use and the guard channel in use. A "TX" (no TX tone/codes programmed) or
"TT"(either TX tone or code programmed) on the right side of the display indicates which band
is active when transmitting. The transmit frequency is also shown. In the receive mode the
display shows “RX” beside the receive frequency if no RX tone or DPL code is programmed
and “RT” if a CTCSS tone or DPL code is programmed.
While in any programming mode, all receivers continue to function.
When the transceiver is in either of the operating frequency or CTCSS tone/DPL code
programming modes and you must respond to a call, click the microphone PTT once (the radio
will not transmit during this click). This will cause the transceiver to revert back to the normal
operating mode and communications with the caller can proceed in the usual fashion.
2.3
PROGRAMMING INSTRUCTIONS
To program one of the 200 memory channels in one of the bands:
1. Select the desired band on the band select (VHF/UHF/GD) switch. This is required before
any of the programming modes or functions.
2-3
2. Press the FUNC key. The display will show the function prompt.
3. Press the PROG key. The display will show the current receive frequency with a flashing
curser on the first or second digit (The first digit is always a one <1> on the VHF band).
4. Type in the desired receive frequency. If you type in a frequency which is not a 2.5 kHz
step, the nearest valid frequency will be automatically selected.
5. The curser will return to the second digit. You can retype the frequency if you
have made an error or press ENTER to continue.
6. The transmit frequency will be displayed with the curser on the second
digit. Follow the same method as in step 3 and 4.
7. The channel spacing increment of either 25.0 or 12.5 kHz is now displayed. Use the
M.UP and M.DN keys to select the desired channel spacing for the memory position,
then press ENTER.
8. The alpha-numeric title is now displayed. Use the M.UP and M.DN keys to scroll
through the alphabet, numbers and symbols. When the desired character is displayed,
press ENTER to advance to the next character. Press “1" to backspace.
9. Keep repeating step six until the last space is set. The display will show SCAN or
LOCKOUT to enable this memory position as part of a scan list or lock it out of the
scan list. Use the 1,2,3,4,5 and M.DN keys to toggle between these functions (for
details see paragraph 2.5). Once the desired condition has been selected, press ENTER.
The TFM-500’s display will show a "+" beside the memory channel number if scan
is enabled.
10. The display will now show the current memory number. Type in the 3-digit number of
the memory you want to save to (if different from displayed one) and press ENTER.
11. You now have the option to program the guard frequencies by pressing FUNC or press
ENTER to return to normal operating mode.
12. If you pressed FUNC to program the guards, guard"1" transmit frequency will be
displayed with the flashing curser on the second digit. Enter the frequencies for
guard"1" receive/transmit and guard"2" receive/transmit as in step 3 and 4.
13. The alphanumeric labels for guard"1" and guard"2" are entered the same as in step 7
and 8. When the last character is entered, the radio returns to normal operating mode.
2.4
PRIORITY SCANNING, SELECTIVE MEMORY CHANNEL SCANNING AND SCAN LISTS
Instead of breaking up the 200 channels into blocks for scanning, the TFM-500 has 5 scan
lists per band. Any of the 200 channels can be assigned to any one or more of these 5 scan
lists. This means the channels do not have to be repeated for them to be in more than one
block and that you are not limited to the number of channels that you can scan at once.
The priority memory channel is always memory position number 1. The priority memory
channel is scanned every other step (ie. 121314151...) to ensure that no incoming messages
are missed. The priority channel can be locked out, which will result in the normal scanning
of the other memory positions.
2-4
Selective memory scanning allows the user to select which of the 200 memory channels are
to be scanned or locked out when the scan function is invoked. To use this feature, follow
the PROGRAMMING INSTRUCTIONS found in paragraph 2.3. Once the screen displays SCAN
or LOCKOUT, use the 1,2,3,4,5 or M.DN keys to toggle to the desired condition. The MDN
button acts as a clear while pressing one or more of the above numbers adds the memory to
the corresponding scan list or lists. Press ENTER when you are happy with your selection. In
normal operating mode the display will later show a "+" beside the memory channel number
if it has been included in any of the 5 scan lists.
NOTE: Scanning can only be performed on one band (either VHF or UHF) at a time. When the
transceiver is in the single mode (combined VHF and UHF audio) and the scan feature has been
invoked on one band, it will be interrupted when transmitting on the other band. In the Dual
mode, you are able to transmit on the second band without effecting the scan function on the
first.
2.5
SCANNING FUNCTION (5 second talkback delay)
Select the band you wish to scan with the band switch. (you can not scan the guard)
To start scanning of the memory channels, press FUNC then SCAN and then the number
(1,2,3,4,5) of the desired scan list.
The radio will scan through all the preset memory positions in the selected scan list (see above
paragraph for priority and selective scan features) and will lock on to the first active channel
in the scan sequence. It will remain on the channel until it becomes inactive. Scanning will
resume again after five seconds of inactivity. To exit the scan mode, press the SCAN key. This
will cause the radio to revert back to the normal operating mode.
If while scanning, you hear a call for you:
1. Respond to the call within 5 seconds. When scanning is interrupted by an
incoming signal, the channel will remain open for five seconds before resuming
scanning.
2. During communications the five second timer is reset from the last Rx or Tx
signal encountered.
The radio resumes scanning once the Rx or Tx activity has ceased for more than five seconds.
The SCAN key must be pressed to exit the scan mode.
2.6
DIRECT FREQUENCY ENTRY MODE
This mode is designed to facilitate quick frequency selection during emergency and other
operational conditions requiring direct operating frequency selection. This operating mode is
disabled along with the programming mode when the internal disable jumper is set.
1.
2.
3.
When the transceiver is in the normal operating mode, press FUNC and the desired
operating frequency ie/ 153.2750.
On the UHF band press FUNC and then 1 and the desired frequency ie/ 443.5500.
You will then be asked for 12.5 or 25.0 kHz channel spacing. Select with MUP or MDN
and press ENTER.
Please note in the above operation, after FUNC and "1" are entered, the LED display will
show memory channel "000" and then the remaining digits in the desired frequency are shown
as they are entered. No alphanumeric message can be entered in this mode. Operation on the
new frequency occurs in both transmit and receive (simplex only) modes. If RX or TX CTCSS
tones/DPL codes are required they must be programmed in afterwards.
2.7
RECEIVE FREQUENCY SIMPLEX FUNCTION
The receive frequency simplex function allows you to quickly change the transmit frequency,
when operating on a split pair (repeater/semi-duplex mode), to the receive frequency to allow
2-5
direct communications. ie/ If you are transmitting on 152.000 MHz and receiving 152.555
MHz, select VHF on the band select switch and press FUNC then UP to transmit on 152.555
MHz. To return to the split pair condition, you must recall the memory channel again. This is
quickly done by pressing M.UP for one step up, then back down one step with the M.DN key.
2.8
KEYBOARD LOCKOUT FUNCTION
The keyboard can be locked out so that accidental pressing of keys does not change
frequency, etc., unknowingly to the operator. To lock the keyboard, press FUNC then LOCK.
This will disable all keyboard functions (except keyboard unlock) in the receive mode. The
DTMF function during transmit will not be affected. To unlock the keyboard, press and hold
the LOCK key for two seconds until the display indicates "UNLOCK".
2.9
VARIABLE FREQUENCY MODE FUNCTION
To enter variable frequency mode, press RCL, 0,0,0, then ENTER or enter a frequency in the
direct entry mode described above. The memory channel that you were just in will still be valid
but now you can manually adjust the frequency with the M.UP, M.DN, UP and DN keys. The
UP and DN keys will make the frequency count up or down in steps of 2.5 kHz. The M.UP and
M.DN keys will make the frequency count up or down in steps of 1 MHz. You can not change
the label. The frequency in this mode can not be stored in memory. To exit this mode, recall
one of the 200 memory channels (ie. RCL, 0,0,1). Variable frequency mode is disabled when
the internal entry disable jumper is set.
2.10
2.11
LED DISPLAY VARIABLE DIMMING MODE
1.
With the transceiver in normal operating mode press the UP or DN keys to increase or
decrease the intensity of the LED display.
2.
Once maximum intensity of the display is acheived, the UP key no longer functions.
Conversely once minimum intensity is reached, the DN key ceases to function.
90 SECOND TRANSMITTER TIME OUT FEATURE
A selectable 90 second transmitter time out feature is provided to prevent accidental
continuous transmission in the event of a faulty PTT switch. With this feature enabled the
transceiver will stop transmitting after the PTT is engaged continuously for 90 seconds. The
timer is reset by releasing then re-engaging the PTT switch.
Press the FUNC then the M.UP key. Use the M.UP and M.DN keys to select 90 SEC, which
enables the feature, or NONE which disables it.
2.12
QUICK GUARD PROGRAMMING FEATURE
A quick download of any of the 200 VHF memory positions into either of the guard memory
positions can be accomplished. Select the memory position whose contents you desire to
download to a guard memory. Select either GD1 or GD2 memory channel as desired. Press
FUNC then 7. The guard memory channel will now contain all the same information as the
selected memory position. This feature is disabled when the FUNC 7 mode is turned off in the
configuration menu.
2.13
PROGRAMMING CTCSS TONES/DPL CODES
CTCSS tones (PL tones) or Digital DPL codes can be assigned to each memory channel. The
guard receiver squelch will operate on noise squelch only, but guard 1 and 2 transmit tones
or codes can be programmed. To program a tone/code to a memory channel:
1.
Select the desired band on the band select switch.
2-6
2.
Use the M.UP and M.DN keys to select the memory channel that you want to assign
a CTCSS tone or DPL code.
3.
Press the FUNC key then the TONE key. The display will show "RX TONE:" and the
current tone number, as well as the tone frequency in Hz.
4.
Use the M.UP and M.DN keys to select the tone number you require. The following
is a list of the available CTCSS tones:
Number
Tone
Number
Tone
Number
Tone
01
02
03
04
05
67.0
71.9
74.4
77.0
79.7
26
27
28
29
30
162.2
167.9
173.8
179.9
186.2
51
52
53
54
55
177.3*
183.5*
189.9*
196.6*
199.5*
06
07
08
09
10
82.5
85.4
88.5
91.5
94.8
31
32
33
34
35
192.8
203.5
33.0*
35.4*
36.6*
56
57
58
59
60
206.5*
210.7*
218.1*
225.7*
229.1*
11
12
13
14
15
97.4
100.0
103.5
107.2
110.9
36
37
38
39
40
37.9*
39.6*
44.4*
47.5*
49.2*
61
233.6*
62
241.8*
63
250.3*
64
No Tone
(carrier squelch only)
16
17
18
19
20
114.8
118.8
123.0
127.3
131.8
41
42
43
44
45
51.2*
53.0*
54.9*
56.8*
58.8*
(The tones marked with * are
nonstandard tones).
21
22
23
24
25
136.5
141.3
146.2
151.4
156.7
46
47
48
49
50
63.0*
69.4*
159.8*
165.5*
171.3*
4.
Press ENTER. "TX TONE" appears on the display. Repeat step 3.
5.
Press ENTER. "G1 TONE" appears on the display. Repeat step 3.
6.
Press ENTER. "G2 TONE" appears on the display. Repeat step 3 and press ENTER.
7.
The display will now show "RX DPL:" and the current 3-digit DPL code. If no DPL code is
required "000" should be entered. Please note that if a DPL code is to be programmed a
CTCSS tone should not be enabled.
8.
Use the keypad to enter the required octal 3-digit DPL (Digital Coded Squelch or DCS)
code. A list of all usable and unique octal 3-digit DPL/DCS codes follows:
2-7
017*
023
025
026
031
051
053*
054
065
071
116
122*
125
131
132
156
162
165
172
174
243
244
245
246*
251
266*
271
274*
306
311
346
351
356*
364
365
431
432
445
446*
452*
466
503
506
516
523*
612
624
627
631
632
721
731
732
734
743
032
036*
043
047
050*
072
073
074
114
115
134
143
145*
152
155
205
212*
223
225*
226
252*
255*
261
263
265
315
325*
331
332*
343
371
411
412
413
423
454*
455*
462*
464
465
526*
532
546
565
606
654
662
664
703
712
754
* indicates GE Digital Coded Squelch (DCS) Code
9.
Press ENTER. "TX DPL" appears on the display. Repeat step 8.
10. Press ENTER. "G1 DPL" appears on the display. Repeat step 8.
11. Press ENTER. "G2 DPL" appears on the display. Repeat step 8 and press ENTER.
2.14
PC MEMORY PROGRAMMING UP/DOWNLOAD CAPABILITY
The TFM-500 transceiver can be programmed by a Windows based personal computer using
Technisonic software supplied on CD with each TFM-500.
Requirements:
1.
PC compatible computer with a CD ROM drive, running Windows 95/98/NT/2000/ME.
2.
Bench power supply of 28 volts DC.
3.
PC download cable, P/N 993390-1 which can be supplied or made from the wiring
diagram at the back of this section.
Connections:
1.
With the PC turned off, plug the 25 pin male 'D' connector into a serial port.
2.
Plug the 9 pin 'D' connector into the back of the TFM-500 transceiver.
3.
Connect the power supply to the TFM-500.
Installing the MultiTDP Program:
The CD supplied with each radio contains software for all of Technisonic’s downloadable
transceivers. Place the CD into your drive and use Windows Explorer to open the MultiTDP
directory on the CD. Double click the MultiTDP_Install.exe file. Follow the onscreen instructions
to install the program onto your hard drive. When the program is installed, it can be run by
selecting Programs from your Start menu, then select Technisonic from the submenu and
finally MultiTDP.
2-8
Using the MultiTDP Program:
With the program running on your computer, a full MultiTDP instruction manual can be loaded
by selecting Documentation in PDF format under the Help menu. Otherwise, to get started, pull
down the File menu and select TFM-500. The program defaults to serial port com1 but can be
set to com2, 3 or 4 under the Com Port menu. The program is now ready to use. You may
want to upload data from the radio and edit channels or start a new data file. The VHF and
UHF bands are treated as separate radios and must be up or downloaded and edited
separately. Editing is done on a channel by channel basis. Set the channel number you would
like to edit and then modify the frequencies, labels, CTCSS tones, DPL codes, wide / narrow
band setting and scan lists as desired. Press the Save Record button to store the changes
youv’e made to the data base below. After you have edited the channel list your can save your
changes to disk and/or download to the radio. Only channels selected with a check mark will
download. It is recommended to use the Select All command in the Data Transfer menu to
ensure the data base in the radio matches the one in the PC. When download is selected, a
message box will appear on your screen asking you to press FUNC and DN on the radio. Press
these buttons on the radio before you click OK in the message box, otherwise the download
will fail.
TFM-500 Upload/Download Programming Cable
P/N 993390-1 Wiring Diagram
FIGURE 2-2
TFM-500 Transceiver PC Up/Download Cable - wiring diagram
Note: If your serial port is a 9 pin connector, instead of the 25 pin use a female 9 pin D
connector, connecting:
Yellow pin 3
Blue
pin 2
Black pin 5
2-10
SECTION 3
3.1
GENERAL
INSTALLATION INSTRUCTIONS
This section contains information and instructions for the correct installation of the TFM500, VHF/FM Transceiver.
Make certain that the correct frequencies are preprogrammed in accordance with the
equipment user's valid FCC operator's license, prior to installation.
3.2
EQUIPMENT PACKING LOG
Unpack the equipment and check for any damage that may have occured during transit. Save
the original shipping container for returns due to damage or warranty claims. Check that each
item on the packing slip has been shipped in the container. Verify that the equipment display
and backlighting configuration are the same as those ordered.
3.3
TRANSCEIVER INSTALLATION
The TFM-500 transceiver is designed to be Dzus mounted and should be installed in
conjunction with a IN-550 installation kit. See Figure 3-1 for an outline drawing of the unit
with dimensions to facilitate the installation.
3.4
INSTALLATION KIT - CONTENTS
The IN-550 installation kit consists of:
3.5
1.
One 15 pin Cannon D mating connector (female) complete with crimp pins and hood.
2.
One 9 pin Cannon D mating connector (male) complete with crimp pins and hood.
3.
Three BNC antenna mating RF connectors (male).
ANTENNA INSTALLATION
Antenna, P/N’s ATM-150 and ATM-403 may be obtained from Technisonic Industries Limited
or a suitable equivalent may be utilized with the TFM-500 transceiver. The antenna should be
mounted on the bottom of the aircraft whenever possible. Consult with instructions provided
with the antennas. Connect RF cables from antennas to the back of the TFM-500 unit by
utilizing the BNC mating connector provided in the installation kit. The UHF connector is
located on the rear, above the 15-pin D connector and the VHF connector is below the 9-pin
D.
3.6
INSTALLATION - PIN LOCATIONS AND CONNECTIONS
The pin numbers and locations for the 15 pin and 9 pin Cannon D located on the rear of the
TFM-500 transceiver are shown below. Pin connections are in provided in TABLE 3-1.
Transceiver mounted view of 15 pin female and 9 pin male connector
3-1
FIGURE 3-1
Outline Drawing for Model TFM-500 Transceiver
3-2
3.6
INSTALLATION - PIN LOCATIONS AND CONNECTIONS (continued)
15 Pin D Connections - Use FEMALE Connector
Pin #
Description
600 Ohm Output 1
Data Output
Panel Lighting (28VDC or 5VAC)
Memory Up
Memory Down
Mic Signal Input 1
Main Power +28VDC
Main Ground
4 ohm Speaker Output
10
4 ohm/600 ohm Output Ground
11
Data Input
12
DF Audio
13
PTT 1 (Ground Keying)
14
Main Power +28VDC
15
Main Ground
9 Pin D Connections - Use MALE Connector
Pin #
Description
600 Ohm Output 2
PTT 2 (Ground Keying)
Reset
Background Debug Signal
Ground
Programming Voltage In
Serial Data Out
Serial Data In
Mic Signal Input 2
TABLE 3-1
3-3
FIGURE 3-2 Wiring connections for the TFM-500 Transceiver
3-4
3.7
WIRING INSTRUCTIONS
Figure 3-2 shows all required connections and recommended wire sizes for the TFM-500
Transceiver. If problems with the correct operation of the UHF/FM Transmit function of a
TFM-500 are encountered on a specific airframe, a DC power line filter may be required.
Typical problems encountered are that UHF/FM will not transmit on high power or will not
open a repeater when using a CTCSS transmit tone. Investigation has determined that once
the ripple on the airframes DC (28V) power line becomes excessive the UHF transmit
function and tones will distort. If the airframes generators are turned off and the UHF/FM
transmit function works correctly from 28 Vdc battery power, the ripple on the DC power
line is excessive. The use of DC power line filter PLF-250, p/n 021214-1 is recommended
and is available from Technisonic.
3.7.1
Main Power +28VDC
The main power +28VDC (±15%) is connected to pins 7 and 14 of the transceiver. Both
pins should be connected.
3.7.2
Main Ground
Ground connections are made on pins 8 and 15. Both pins should be connected.
3.7.3
PTT (Ground Keying)
The PTT line is connected to pin 13 and should be floating when the transceiver is in
receive mode, and grounded during transmit mode. The PTT2 input is on pin 2 of the 9 pin
connecter.
3.7.4
Front Panel Back Lighting
Front panel back lighting connection should be made on pin 3 of the transceiver. The
opposite end of this lead should be connected to the panel lighting system of the aircraft.
Before connecting, verify the required panel lighting voltage (28 VDC or 5VAC) on the
transceiver configuration control label.
3.7.5
Audio Outputs (600 ohms and 4 0hms)
There are two audio outputs available (1 & 2). 600 ohm audio output 1 has audio from
both bands and the guard in single operator mode. When in dual operator mode, 600 ohm
output 1 has audio from the VHF band and guard only while the UHF audio will be on the
600 ohm output 2.
3.7.6
Audio Output Ground
Pin 10 is the ground for both the 4 ohm and 600 ohm audio output signals.
3.7.7
Mic Signal Input
The microphone input signal is to be provided on pin 6, utilizing shielded wire with the
shield grounded to pin 10. Microphone signal 2 is on pin 6 of the 9-pin D connector.
3.7.8
Memory Up/Memory Down
Remote scrolling through the 200 memory positions can be achieved by providing a ground
to pins 4 (up) and 5 (down) through a momentary contact cyclic switch. The memories will
scroll only on the band selected.
3-5
3.7.9
Data Input
Data communications equipment requiring direct access to the modulator and discriminator
an be connected via pins 2 and 11. Data cannot be transmitted in CANADA unless
equipment is approved for use with the TFM-500 by the communications regulatory
authority.
3.8
INTERNAL PROGRAMMING AND GUARD ENABLE/DISABLE JUMPER
The programming and direct frequency entry modes can be disabled by removing the
internal enable/disable jumper strap from pins 1 and 2 of J10. Removal of this jumper will
prevent operation on any frequencies other than those programmed in the 400 memory
positions and two guard receiver memory positions. Removal of the guard receiver
programming enable /disable jumper strap from pins 1 and 2 of J11 will totally disable the
operator’s ability to re-program the 2 guard receiver channels.
The transceiver is always shipped with the two jumpers in the entry enable positions. To
place either of the jumpers in the disable position:
1.
2.
3.
Remove the left side of the radio.
Set or remove jumpers as necessary.
Re-assemble the radio in the reverse order.
Microprocessor Control Unit (MCU) PCB Module:
FIGURE 3-3
Internal Enable/Disable Jumper Locations
3-6
3.9
TRANSMITTER POWER ADJUSTMENTS
The transmitter power is adjusted to a maximum of 10 watts in high power mode and 1
watt in low power mode over the transceiver operating bandwith at the factory. If
transmitter RF power re-adjustment is required, perform as follows:
3.10
1.
Select the band that you wish to adjust on the band select switch.
2.
Connect an RF through-line wattmeter to the appropriate antenna connector. Set the
operating frequency to 156.000 MHz for VHF or 457.000 MHz for UHF and key the
transmitter.
3.
In low power mode, set the low power adjustment potentiometer on the left side of
the chassis to produce 1.0 watt of RF output power (See Figure 3-3).
4.
In high power mode, set high power adjustment potentiometer on the left side of the
chassis to produce 9.5 watts of RF output power.
5.
Verify that the RF output power is between 9 and 10 watts on 138.000 MHz and
174.000 MHz for VHF or 403.000 MHz and 512.000 MHz for UHF.
TRANSMITTER MICROPHONE LEVEL ADJUSTMENT
1.
Set the transceiver operating frequency to 156.000 MHz and connect an appropriate
test receiver to the RF output connector. Ensure that the output of the transceiver is
terminated into a proper dummy load.
2.
Key the transmitter and input a -10 dBm (0.25 VRMS), 1 kHz audio signal into the
microphone input.
3.
Adjust the microphone level potentiometer (Mic Level 1) through the access
hole located on the right side of the chassis (see Figure 3-4) to produce a 2.7 kHz
deviation.
4.
Verify that the deviation is at least 2.3 kHz on the following frequencies: 138.000
MHz, 162.000 MHz and 174.000 MHz.
5.
For UHF, perform the same procedure using the Mic Level 2 pot on the left side of the
transceiver and use the following frequencies: 403.000 MHz, 457.000 MHz and
512.000 MHz.
3-7
FIGURE 3-4
External Adjustment Access Holes
3-8
3.11
SQUELCH ADJUSTMENT
The squelch circuit is designed to open or close depending upon the noise content and not
the strength of the received signal. Therefore high squelch settings are not necessary nor
possible. The squelch on both the VHF and UHF receivers is factory set to open at
approximately 22 dB SINAD, while the guard receiver is set to open at 25 dB SINAD. The
range of adjustability is approximately 3 to 27 dB SINAD. This adjustment can be made or
altered to suit local conditions as follows:
3.12
1.
Set the receiver to 157.000 MHz for VHF or 457.000 MHz for UHF. Connect a signal
generator to the antenna input of the desired band.
2.
Set the signal generator to produce a ±3 kHz deviation with a 1 kHz tone on 157.000
MHz or 457.000 MHz. Increase the signal generator RF level from 0 uV until the
squelch indicator LED is on. Verify the squelch opens at the desired level.
3.
If not, re-adjust receiver squelch potentiometer through the access hole located on the
bottom or side of the transceiver chassis (see Figure 3-4).
TRANSMITTER DEVIATION ADJUSTMENT
VHF:
1.
Remove the bottom cover of the transceiver.
2.
Set the VHF operating frequency to 157.000 MHz and connect an appropriate test
receiver to the RF output connector. Ensure that the output of the transceiver is
terminated into a proper dummy load.
3.
Key the transmitter and input a +10 dBm (2.5 VRMS), 2.5 kHz audio signal into
microphone input 1.
4.
Adjust the wideband deviation limit potentimeter, R30 on the VHF Rx/Tx module (see
Figure 3-5) to produce a ±4.25 kHz deviation. Select narrow band mode on the VHF
band and adjust the narrowband deviation limit potentimeter, R76 on the VHF Rx/Tx
module to produce a ±2.15 kHz deviation.
5.
Verify that the deviation does not exceed ±5 kHz for wideband and ±2.5 kHz for
narrowband on 138.000 MHz, and 174.000 MHz. Re-adjust R30 or R76 as required,
if the deviation exceeds ±5 kHz or ±2.5 kHz, respectively.
6.
Replace the bottom cover.
UHF:
1.
Remove the top cover of the transceiver.
2.
Unplug the white coax from the guard receiver and remove the front panel.
3.
Remove the guard receiver tray.
4.
Replace the front panel and select the UHF band.
5.
Set the UHF operating frequency to 457.000 MHz and connect an appropriate test
receiver to the RF output connector. Ensure that the output of the transceiver is
terminated into a proper dummy load.
3-9
6.
Key the transmitter and input a +10 dBm (2.5 VRMS), 2.5 kHz audio signal into
microphone input 1 if in single mode or microphone input 2 if in dual mode.
7.
Adjust the wideband deviation limit potentimeter, R30 on the UHF Rx/Tx module (see
Figure 3-6) to produce a ±4.25 kHz deviation. Select narrow band mode on the UHF
band and adjust the narrowband deviation limit potentimeter, R76 on the UHF Rx/Tx
module to produce a ±2.15 kHz deviation.
8.
Verify that the deviation does not exceed ±5 kHz for wideband and ±2.5 kHz for
narrowband on 403.000 MHz, and 512.000 MHz. Re-adjust R30 or R76 as required,
if the deviation exceeds ±5 kHz or ±2.5 kHz, respectively.
9.
Replace the bottom cover.
VHF Receiver/Transmitter PCB Module
Notes: R30 is for 25 kHz (wideband) Deviation Adjustment
R76 is for 12.5 kHz (narrowband) Deviaton Adjustment
FIGURE 3-5
Deviation Adjustment Potentiometer Location
3-10
UHF Receiver/Transmitter PCB Module
Notes: R11 is for 25 kHz (wideband) Deviation Adjustment
R102 is for 12.5 kHz (narrowband) Deviaton Adjustment
FIGURE 3-5
Deviation Adjustment Potentiometer Location
3-11
APPENDIX TO “INSTALLATION INSTRUCTIONS”
POST INSTALLATION EMI TEST
PURPOSE
The purpose of this test is to identify any interference that the TFM-500 may cause with existing
aircraft systems.
TEST CONDITIONS
The TFM-500 transceiver should be installed and function tested. The antenna VSWR should be
checked. A forward/reverse power check with a in-line wattmeter should show no more than 10%
reflected power. For the following tests, insure that the power switch is in the high position.
METHODOLOGY
Most of the EMI tests can be accomplished on the ground. In some cases flight testing is required
or is easier. If the aircraft is approved for IFR operations, then it is mandatory that interference
between the TFM-500 Airborne FM and the approach aids be checked in flight.
The GPS should be operational and navigating with at least the minimum compliment of satellites.
The VHF comm should be set to the frequencies indicated with the squelch open. VOR/DME
receivers should be set to the frequencies indicated and selected for display If possible, set up a
DME ramp test set on the frequencies indicated and adjust the output until the flags are out of
view. The transponder and encoder should be monitored with ramp test equipment. Set the
output of the transponder test set to 3db above the output necessary to achieve 90% reply. If
possible set the ADF to a nearby navigation station.
Modulate the TFM-500 transmitter on the indicated frequencies for at least 20 seconds.
Observe the GPS for any degradation in satellite status or availability or flags. Listen for any noise
or detected audio signals on the VHF comm(s). Listen for any noise or detected audio signals on
the VOR/LOC receiver audio; look for any moment of flags or needles on the VOR/LOC/GS
navigation display(s). Observe the transponder for any loss of reply or spurious reply.
List the power plant, fuel and other electric instruments in the chart provided and note any
anomalies that occur while transmitting. Assess the results.
If the aircraft is equipped with an autopilot or a stability augmentation system, then test fly the
aircraft and verify that operation of the TFM-500 transceiver does not have adverse effects on
these systems. After checking for gross effects at a safe altitude, fly an approach with each of
the different navigation systems coupled to the autopilot (ILS, GPS ETC.) and look for any
anomalies.
A-1
RESULTS
If the installed system passes all of the applicable EMI tests, then no further action is required. If
interference is observed then the interference must be assessed against the appropriate standards
of airworthiness for the system in question. For example it is permissible for a VFR certified GPS
to lose navigation capability while the TFM-500 unit is transmitting, providing that it recovers
properly and promptly, but it is not permissible for an IFR Approach certified GPS to affected in the
same way. A complete discussion of all the standards of airworthiness to be applied in assessing
EMI effects is beyond the scope of this document.
PROCEDURE
A.
Operate the TFM-500 transmitter on the following frequency for at least 20 seconds.
Observe the GPS for any degradation in satellite status or availability or flags.
FREQUENCIES
TFM-500
GPS #1
PASS
GPS #2
FAIL
PASS
FAIL
143.180 MHZ
143.1825 MHZ
157.5000 MHZ
157.5425 MHZ
512 MHZ
NOTES:
B.
Determine if the image frequency for the VHF Comm falls within the range of the TFM-500.
If so, select a set of frequencies that will cause the TFM-500 to be set as close as possible to
the image frequency. Any one of the many possible sets will suffice. Record those values in
the spaces provided in the following chart. Modulate the TFM-500 transmitter on the
following frequencies for at least 20 seconds. Listen for any noise or detected audio signals
on the VHF comm.
Example - Bendix/King KY 196A:
The first IF frequency is 11.4 MHZ. The L.O. is above the received frequency (high side
injection), therefore the image frequency is 22.8 MHZ above the selected frequency. Set
the KY 196A to 120.000 MHZ and the TFM-500 to 142.8000 MHZ.
A-2
RESULTS
FREQUENCIES
VHF #1
TFM-500
135.975
138.0000
121.150
157.5000
131.250
157.5000
PASS
FAIL
Image:
FREQUENCIES
VHF #2
RESULTS
TFM-500
135.975
138.0000
121.150
157.5000
131.250
157.5000
Image:
NOTES:
A-3
PASS
FAIL
C.
Determine if the image frequency for the VOR/ILS Nav falls within the range of the TFM500. If so, select two sets of frequencies that will cause the TFM-500 to be set as close as
possible to the image frequency. Chose one set in the localizer frequency range, and one in
the VOR frequency range. Record those values in the spaces provided in the following
chart. Modulate the TFM-500 transmitter on the following frequencies for at least 20
seconds. Listen for any noise or detected audio signals on the receiver audio; look for any
moment of flags or needles on the navigation display.
RESULTS
FREQUENCIES
VOR/ILS #1
TFM-500
108.000
162.0000
108.100
162.1500
PASS
FAIL
Image:
Image:
RESULTS
FREQUENCIES
VOR/ILS #2
TFM-500
108.000
162.0000
108.100
162.1500
Image:
Image:
NOTES:
A-4
PASS
FAIL
D.
Modulate the TFM-500 transmitter on the following frequencies for at least 20 seconds.
Observe the Glideslope displays. Look for any movement of flags or needles on the
navigation display.
FREQUENCIES
G/S #1
334.7 (108.1)
RESULTS
TFM-500
334.7 (108.1)
FAIL
167.3500
FREQUENCIES
G/S #1
PASS
RESULTS
TFM-500
167.3500
NOTES:
A-5
PASS
FAIL
E.
Operate the TFM-500 transmitter on the following frequency for at least 20 seconds.
Observe the Transponder for any spurious replys or loss of reply to test set.
FREQUENCIES
TFM-500
TRANSPONDER #1
FAIL
PASS
TRANSPONDER #2
PASS
FAIL
512 MHZ
NOTES:
F.
Modulate the TFM-500 transmitter on the following frequencies for at least 20 seconds.
Observe the DME displays. Look for loss of distance information on the display.
RESULTS
FREQUENCIES
DME 1
TFM-500
978 (108.0)
489
1020 (112.1)
510
FREQUENCIES
DME 2
489
1020 (112.1)
510
FAIL
RESULTS
TFM-500
978 (108.0)
PASS
NOTES:
A-6
PASS
FAIL
NOTE:
For the following tests, select a frequency at the top, middle and bottom of each band of
the TFM-500 transceiver.
138 to 174 MHZ Band
403 to 512 MHZ Band
Frequency #1
Frequency #2
Frequency #3
G.
At a safe altitude engage the autopilot or stability augmentation system. Modulate the
TFM-500 transmitter on the above frequencies for at least 20 seconds. Observe any effect
on the autopilot or stability augmentation system.
Observations:
H.
Perform a coupled ILS approach to the aircraft's certified limits. Modulate the TFM-500
transmitter on the above frequencies for at least 20 seconds. Observe any effect on the
autopilot. Repeat for second flight director/autopilot if equipped.
Observations:
A-7
I.
List the power plant, fuel and other electric instruments in the chart provided and note any anomalies that occur while
transmitting. Assess the results.
SYSTEM
STEP
Com 1&2
(UHF 403-512 MHz Band)
Transponder & Encoder
(VHF 138-174 MHz Band)
ADF 1 & 2
VG
Glideslope 1&2
(UHF 403-512 MHz Band)
VOR/LOC 1&2
(UHF 403-512 MHz Band)
Directional Gyro
PASS
A-8
FAIL
NOTES
STEP
SYSTEM
PASS
Compass
Fuel Pressure
10
Oil Temp
11
Amps
12
Bus Voltage
13
Fuel %
14
Nt
15
TOT
A-9
FAIL
NOTES
STEP
SYSTEM
16
Torque %
17
Annunciators
18
Digital Clock
19
Oil Pressure
PASS
A-10
FAIL
NOTES
STEP
SYSTEM
PASS
NOTES:
A-11
FAIL
NOTES

---

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