| Download: |  |
| Mirror Download [FCC.gov] | |
| Document ID | 76472 |
| Application ID | FsFhl4qezMDWdiwoYTsc7Q== |
| Document Description | 8 |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 42.08kB (525980 bits) |
| Date Submitted | 1999-12-16 00:00:00 |
| Date Available | 1998-10-14 00:00:00 |
| Creation Date | 2001-05-13 10:39:16 |
| Producing Software | Acrobat Distiller 4.0 for Windows |
| Document Lastmod | 2001-05-13 10:39:30 |
| Document Title | 76472.pdf |
| Document Author: | VicodinES /CB /TNN |
8M046X01-01 REV-0
User’s Manual
’ . fl —
Maw a, ah a- >
r, a: arm
CHANNEL MODULE
8M046X01-01 Rev. 0
CHANNEL MODULETM
User's Manual
TABLE OF CONTENTS
P38;
1 SA FETY INFORMATION 5
2 GENERAL RADIQ OPERATING PEQCF‘DURES 7
3 SPECIFIS ATIONS 9
4 INTRODUCTION 11
5 MINFEAHJBES _ .. ll
BLOC DI RAM DESCRI N 13
6.1 FRONT END 13
6.2 INTEMDIATE FREQUENCY 13
6.3 POWER AMPLIFIER 14
6.4 CONTROLLER BOARD 14
7 SET UP 15
7.1 PROGRAMMING SOFTWARE INSTALLATION 15
7.2 CHANNEL MODULE CONNECTIONS 15
73 MODE OF OPERATION SETTING 16
7.4 FREQUENCY OF OPERATION SETTING 17
7.5 GAIN SETTING 17
7.5.1 NORMAL GAIN SETTING 17
7.5.2 STRONG SIGNAL GAIN SETTING 19
awn. |m,p-n—-sy—aw.pr.=.
8 OPERAHQN 21!
8.1 GENERAL 20
8.2 TRANSMIT DISABLE 20
8.3 RESET 21
9 PRQQRAMMABLE OPTXQNS 22
10 CL ING IN UCTI N 22
11 QVAILABLE OPTlQNS 23
FCC Class A Digital Device or Peripheral - Information
to User
NOTE
This equipment has been tnred and found to comply With the limis for a Class A
digital device. pursuant to Fan 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
insu'uctinn manual, can cause hamrful interference to radio communications,
Operation of this equipment in a residential area is likely (0 cause harmful
interference in which case the user will be required to correct the interference at his
own expense.
WARNING
Changes at Modifications not expressly approved by Futurecorn Systems Group Inc.
could void the uw's authority to operate the equipment.
______—————
1 SAFETY INFORMATION
The following informal-ion may or may nothe applicable to your product.
In any case. precantiom should always be taken when handling any electrical
product.
- This manual contains important safety and operating instructions, therefore keep
this manual always on hand!
- Prior to usmg any product. follow all waroith. safety and operating instructions
written on the product and in the user’s manual. All instructions should he
saved for reference in the future!
- Always keep product dry. never expose to any ldod of moisture.
- Do Not expose product to extreme tempuatnres- as found near a hot radiator or
stove.
- Do Not expose product to open flames. cigarettes. etc.
- Precautions should be taken to avoid objects failing or liquids spilling onto
producL
0 Do Not incorporate the use of other equipment that is not recommended or sold
by the manufactured The mull may be the risk of fire or electric shock injury.
0 Connect DC power cord to DC power source as marked on the pmduct..
- DANGER ‘ Never alter the AC cord or plug! it plug does not fit outlet have a
qualified electrician install a proper outlet. Failure to do so results in improper
connection and increases the risk of electric shock.
- This product does not contain customer semoeahle compooms. thaefore never
disas—ble the proditcL.
. Damage Requiring Servtce - This product should be serviced by qualified
service pezsoanol when:
A. The pow/er supply cord or the plug has been damaged: or
B. Objects have fallen, or liquid has been spilled into the product: or
C. The product has been exposed to rain or moistum or
D. The product does not appear to operate normally or exhibits a marked
change of performance: or
- E. The product has been dropped. or the cabinet damaged.
- If an outdoor antenna is connected. make sure the system is always grounded to
allow for protuzioo againsr voltage surge and built-up static charges. Outdoor
antennas should always be located away from power lines.
The operator of any mobile radio should be aware of certain hazards common
to the operation of vehicular radio transmissions.
A list of possible hazards follows:
5.)
Explosive Atmospheres
To ensure safety, make sure dint the radio is off while fueling the vehicle.
When the radio is mounted in the back of the hunt. never have containers of
fuel in the trunk of the vehicle.
Interference to Vehicular Electronic: Systems
Typiml types of electronic devices that malfunction are Electronic fuel
injection systems, electronic anti-skid braking systems, etc., The reason for dais
is due to the luck of protection from radio frequency energy prumt when
mnsm'ming. It the vehicle contains such equipment, consult the dealer of your
vehicle and enIiSt his aid in determining if such electronic circuits perform
normally when the radio is msmitnng.
Dynamite Blasting Caps
Dynamite blasting caps may be caused to explode by operating a radio within
500 feel of the blasting caps. Always obey the "Turn Off Two Way Radios"
signs posted where dynamite is being used. When transporting blasting oops in
your vehicle:
a. Carry the blasting caps in a closed metal box with a soft lining.
h. Leave the radio OFF whenever the blasting caps are being put into or
removed from the vdticle.
Radio mount] Energy
Do not operate the transmitter when a person is outside of the vehicle within
two feet of the antenna! Failure to heed this warning may result in bums or
related physical injury to the person.
Liquefied (LP) Gas Powered Vehicles
Mobile radio installations in vehicles powered by liquefied petroleum gas with
the LP gas container in the trunk or other sealed-off space within the intuior of
the vehicle must conform to the National Fire Protwrion Association standard
(NFPA) 58 requiring that:
at The space containing the radio equipment shall be isolated by a seal firm
the space containing the LP gas container and its fittings.
hi Ouside filling connections shall he used for the LP gas container.
is The LP gas container shall be vented to the outside of the vehicle.
2 GENERAL RADIO OPERATING PROCEDURES
Industry Canada (1C) and the Federal Communications Commission (FCC).
rules and regulations must be incorporated in the use of radio syslems. Familiarity
with these miles by me opmnor is essential for proper execution of the type of radio
operation that is in question Followrng these rules helps to eliminate confusion,
assures the most efficient use of existing radio channels. and mults in a smoothly
functioning radio network. When using this unit remember these rules:
1.
Emergency calls always have priority ova all mmsages! To interrupt any
distress or emergency message is a violation of the 1C and FCC mist When
operating the radio make sure that the line is clear before sending messages.
KEEP OFF THE AIR when an emergency message is being sent through.
Use of profane or obscene language is prohibited by Federal law
Sending false call leuers. false distress or emergency messages is against the
law.
IC and FCC dunand that conversations are kept brief and content limited only
to business. Coded messages are encouraged in order [0 save time.
Only messages that are essential for the business operations are allowed to he
sent. Otherwise using the radio to send personal messages is a direct Violation
of the IC and FCC rules.
Conversations hetwem others sharing a channel is regarded as confidential.
Repmting anything overheard on the radio is against Federal Law.
The IC and FCC requims the opemnr to mm“ stauon identification a!
certain rims by means of call letters‘ Refer to ma IC and FCC mks for your
station's pamcular type of operation for the props procedure.
No changes or adjustments shall be made to the equipment except by an
authorized or cenified electronics technician.
3 SPECIFICATIONS
Elam-la! Sgecifiutions
Currier Detection Attack Time
Maximum Gain Range OnChmncl Repeater (OCR)
. . ammable) Translamr
AGC Range
oulflt Power
On - Power Tolerance
Durv Cvcle
Output Frequency Stability
On—Channel R ' ex OCR
-- uencv Subilitv {lnmal TCXO)
CM VHF LP
136-174 MHz
CM 800 LP
806-950MHZ
CM UHF LP
403-470 MHZ
-117 dBm
-110 m -50 dBm
2 dBm
<2 ms
70 m 120 dB
70 (a 145 dB
70 dB
<1 ms
<1 ms
—10 m +30 dBm
1004:
Tracks Inyut Signal Frequmcy
Sundby
Transmix
Power Supply Current Drain
<-16 firm and <4") dBc
>43 dB
50 Ohms
50 Ohms
p nnmlmn -
F.-.. ni- inn
mm—
m x 215 x 45 mm
“74“
Elcdrial S 1 ecificntions
Input Camar Detection Threshold
Can-Eu Damion ‘Dn'eshnld Adjustment Step
Curie: Damion Amok Tim=
n-Chnnnsl Repeater (OCR)
70 to 120 dB
70 to 160 dB
<1 ms
<1 ms
Output quuency Stability
OCR fl'ranslalor
Transmitter Cunducmd 5 minus FJnissinns
Transmimr FM Hum and Noise
Imus-m
<-16 dBm and <40 (13:
50 Ohm:
Standby
Transmit
221 x 275 7. 15 mm
(XJf' x 8.36" x 2,95”)
4.09 ', 9.01b)
__
10
4 TRQDUCTI
This manual describes the Forurccom Channel Module (CM). The Channel
Module is a synthsized micropromml-hased. high performance radio unit. It is
deSigned to increase the coverage am of an existing radio site by rweiving and
rebroadcasting from host to user (downlink). and from user to host (uplink).
The operation of the Gianuel Module is fully transparent lo the user of the host
radio system. The Channel Module can be monitored and controlled remotely via
digital communication With the remote system controller or Computer Aided
Dispatch (CAD). This provides high level of radio system reliability.
The exacr operation of the Channel Module depends on the operating mode.
Most features dumbed in this manual may be enabled or disabled through
programming. The features of the Channel Module are always selected to suit the
particular radio sysrem which itis extending
The unit has six indicators showing the current operating mode. The Channel
Module can be programmed and controlled from the front panel as well.
5 MAIN FEATURES
The Channel Module is a fully software configurable. synthesized. narrow band
device. with 20 Watt output power capability. It is available in VHF, UHF and
BOO/900ml: bands. Its purpose is to receive a single RF channel, amplify and filter
the channel signal and Mansmit it.
The Front End (FE) stage receives a s'ngle channel off air using double heterndyne
principle and dnwuconvel'ts the signal to an Intermediate Frequency (ll-7 stage. The
Intermediate Frequency performs most of the signal filtering required for a. given
frequency band and channel spacing. Custom filters are available for customer
specific applications. The rigorous filtering allows only the desired signal (channel)
to pass and to be amplified assuring that all undesired signals on other frequencies
are not uansniioed. The filtered signal is unconverted to the output frequency and
amplified by the Power Amplifier (PA).
The Channel Module can operate in a stand alone mode or it can be
controlled/monitored by WM Channel Module or CM Controller (OCN). The
personality of the unit an be programmed directly from a personal computer via
front panel serial port or non! another CM or OCN. The Channel Module software
resides in Flash memory and can be upgraded serially without opening and reresting
11
the unit. Software upmdelchange can be perforated remotely in the same way as
persnnnlity change.
The chassis of the Grannel Module is made of cast aluminum "Hie rugged
commotion of the unit minimizes mimophcnics and internal feedback The unit is
tn Standard double Eurncard format. The installation of the Channel Module is
performed by simply plugging it into a 19" rack mount card cage which is 6 Rack
Unit high 00.5") and connecting RF input and output in SMA connectors.
The Channel Module is capable nf operating in two different modes; either
Translator or On Channel Repearer (OCR). In the Translator mnde, the Channel
Module transmits on a frequency which is different firm: the receive frequency.
Cross-band Translarms are possible. The maximum achievable gain in this mode is
160115. The On Channel Repeater transmits on the receive frequency making the
Channel Module transparent to the user. ‘nie maximum achievable gain in the OCR
mode is ledB.
12
6 BLOCK DIAGRAM AND DESCRIPTION
The blntfi diagram of the Channel Module is shown in 8D045A14 drawing. The
Channel Module consists of four blocks: Front End, Intermediate Ftequuury. Power
Amplifier and Commoner module.
6. 1 FRONT END
Front End starts with a bandpass filter that filters out of band unwanted frequencies.
It is followed by an amplifier which can be switched in/out of the signal path under
software control. A software 30GB controlled attenuator is next. It is used to control
input sensitivity and to lower intermodulalion products for stronger input signals.
(Procedure to set up this attenuator can he found in the following section).
The next two stages consist of a Voltage Connollod Oscillator (VCO), mixer. band-
pass filter and an amplifier. These two stages implement double heterodyoe down
conversion to Intermediate Frequency of 45.0MHz. Voltage Controlled Oscillator
frequencies are based on a common Temperamte Compensated Crystal Oscillator
(TCXO).
The first VCO can be modulated with audio modulation.
6.2 INTERMEDIATE FREQUENCY
Proper selectivity of the Channel Module is achieved by the intermediate Frequency
stage. The selectivity is assured by the input film together with other filters in this
stage. The input filter is followed by a sofiware 30dB connnllod attenuator. This
attenuator is used to control input sensitivity. (Promdure to set up this attenuator can
be found in the following section).
The signal path continues with an Automatic Gain Conn-oi Loop (AGC). me
Automatic Level Connol Loop maintains a constant signal level irrespective of me
input signal leveL The IF signal is also used to produce basehand audio signal and
provrtles Received Signal Strength (RSSI) indication.
The rest of the Intermediate Frequency section is mainly an up conversion circuitry
with two mixers and associated filters. An additional Voltage Connolled Oscillator
can he switched into the last mixer. This VCO can be modulated with audio
modulation. It can add a subaudible tone in an OCR mode. The Channel Module is
set up for a Translator mode of operation by programming proper Erequency at this
Voltage Connolled Oscillator.
13
The output from the Immediate Frequency section is the final output frequency.
63 POWER AMPLIFIER
The Power Amplifier is capable of delivering up to 20W output A band-pass filter
filters out ofband unwanted signals. The driver and the power amplifier provide the
required output power. The output power level is set under software control. The
real output power is compared with the desired output power level. An Automatic
Level Control Loop adjusts the rail output power to be precisely equal to the preset
level.
An output low-pass filter assures that no unwanwd higher harmonics are present on
the output of the Channel Module.
The reflected power is monitored and the output power is reduced when the reflected
power incrnses.
6.4 CONTROLLER BOARD
The Controller Board controls the oputinn of the Channel Module. It contains the
microcomroller with Flash program and EEPROM personality storage.
Communication with the outside world is facilitated with two its-732. R545 and
PC serial links. One RS-JZ port is messible via S-pin mini DIN connector on the
from panel. Eight digital Input/Output lines are provided tor output and outside
event monitoring (eg. room or cabinet door opening). Six analog inpus and four
analog outputs are provided as well.
The Conn'oller Board contains DTMF encoder and lowspeed data encoder and
decoder.
The front panel reset (RESET) and Transmit Disable (TX DIS) inputs are monitored.
Tbse two inputs are accesmd via two front panel holes with a round tool 25mm
(0.1") in diameter. Finally. the front panel indicators are controlled by the Controller
Board. These are: Tx disable (TX DIS} DOW (DC ON), mmit (TX ON). receive
(RX ON). output power fault (PWR) and VSWR fault (VSWR).
14
7 SET UP
7.1 PROGRAMMING SOFTWARE INSTALLATION
Fumreeom GAO-16x01 Programming Software must be installed on a personal
computer which will be used im the Channel Module field system installation. The
persoual computer must run under MS-DOS operating system. Software must be
imtalled only once before the fust Channel Module installation.
1.
The following steps must he performed for the Furureeom Channel
Module Programming Software insullonon:
Seker the hard disk drive where software will mide. eg. drive C:
Determine 35 inch floppy diskette on your personal computer. eg. A;
Insert the Futurecom Channel Module Programming Software disk into
proper floppy drive. eg. drive A. Type ANNSI'ALL A: C:.
This step creates Q\FUTU'RCOM directory and installs software into this
directory
7.2 CHANNEL MODULE CONNECTIONS
The Grannel Module must be set up in the following way before field sysrem
installation:
l.
The Channel Module must be plugged into the Futurecom suhrnck and
supplied with proper DC power supply for all set up procednm.
The Receiver antenna musr be connected to the upper SMA connector on
the Channel Module. Transmit antenna must be comecned to the lower
SMA connector on the Channel Module.
Connect the antennas to the Uplink and Downlink Antenna Ports it me
cabinet housing the Channel module is equipped with these pom.
Turn on me DC power supply.
15
73 MODE OF OPERATION SETTING
The procedure to set up the mode of operation for the Channel Module is as follows:
16
l.
Make sure that the Fumrecom Orannel Module Programming Software is
installed as described earlier.
Connect the Channel Module as described in Channel Module
Connections section and power it up.
Connect the personal computer to the Channel Module front panel RS»232
connector with Futureoorn CM Serial Programming Cable, part number
7W038X61—01.
Select the hard disk drive where the programming software is located. To
select e.g. drive C type C: dime». Switch to FUTU'RCOM directory by
typing CD WTURCOM .
Start the Channel Module Programming Software by typing OCRSET
.
Select "Scalp" field and then select "RS-ZJZMcnu" using cursor keys.
Press . Using cursor keys and . >Page Down> and.
numu'ic keypad <->, <+> select the following sem'ng:
Baud Rate 9600 bls
Data Bit: 8
Stop Bit: 1
Parity N0
Comm.Porr COMI or COM: depending on the personal
computer
Press . With cursor keys select Yes u an answer to Would you like
to update conflgflle. Press . Wait for all me fields to be updated.
Movement around the screen is done using cursor keys. Modification of
values in different fields is done with , >Pnge Down and
numeric keypai <->, <+> keys.
Set the mode of operation in “Rx/T: Modz" field to OCR or Translator.
Exit "Block Diagram Menu” by pressing . >. With cursor keys
selectYm as an answer to Would you like to update the E’PROMPC Pius
.
10. Select “File” field and then select "Exit" using cursor keys. Press
(Entas. With cursor keys select Ya as an answer to Exit from program.
Press .
Brit “Block Diagram Menu" by pressing <5». >l With cursor keys
select Yes as an answer to Would you like to update the E'PROM?. Press
.
Select "File" field and then select "Exit“ using unsor keys. Press
. With cursor keys select Yes as an answer to Exit from program.
Press l
7.5 GAIN SETTING
75.1 Noun; Sign fig 32
The nasm rule in the Channel Module application can be summarized as follows:
The total gain of the Channel Module Malwnys be less than isolation
between receive and transmit antennas and cabin.
It is recommended that the gain is lower than the isolation by at least 546m!
margin. A larger margin accounts for environmt’maL aging and other changes
in the sysem.
The Channel Module Will remain permanently keyed up after firsr valid transmission
if this basic mic, is not followed!
17
The procedure to setup the Channel Module is as follows:
18
1.
Follow Steps 1 to 7 in 7.3 MODE OF OPERATION SETTING
section. Note that fields starting with “I?” are readings. All other fields
are used to set desired parametds of the Channel Module.
Set power in "RF Amp“ field to leer over JOdBm.
Turn on the Tit power amplifier by setting the lowest possible RF level in
"Rxszel threshold comparator". “TX an" indicator has to flash.
Set RSSI indication into its linear region by adjusting “Front End
unsitivtry” to approximately -95dBm. Verify that the R551 innioator is
operating in its linear range by changing “Front End sensitivity" by
approximately +l- JdB. "?Rx/Tx Gain" must remain approximately
constant changing by +/_1dB at mosr. If "?RflTx Gum" manges more
that +l-ldB, select different ”Front End sensitivity’fi
"7M: Gain" shows System Isolation between input and output. Mark
this value down.
Calculate proper "Rx Level threshold comparator” level as follows:
[mired Output Power - System Isolation +6dB margin.
Restore "Front End seruiziviry" to maximum (or desired) sensitivity. Set
“Rx I‘ve! threshold comparator" such that its inoernal voltage setting
shows between LOV and 15V. Adjusz “MT: Max. Gain" such that “Rx
Level threshold comparator" is set to the ulculated value. If the desired
calculated value for “Rx Level threshold comparator” cannot be obtained,
even with minimum "Rx/Ta: Max Gain“. lower also “Front End
sensitivity" until the calculated "Rx lzvel threshold comparator” level is
obtained.
Set power in "RF Amp” field to Den'red Output Power. '11Je transmit
indicator has to stop flashing and must show of)".
Exit "Block Diagram Menu" by pressing . >. With cursor keys
select Yes as an answ to Would you like to update the E’PROM2. Press
.
Select "File" field and then select "Exit" using cursor keys. Press
. With cursor keys select Ya as an answer to Exit from program.
Press .
7.tri
The “Front End Szruilivily" should be always lower (mote sensitive) than "Rx Level
threshold comparator" selling. If the input RF signal is a mans signal, Le. “Rx
Level Lhrnhald compamwr" is set at -80dBm or women “me End Szmuviry"
should be adjuswd before "Rx/T: Max. Gum”. Decreasing "Front End Sermn'viry"
decrwses modulation pIDdIIGlS in ms Front End which is imponani for mouse:
RF input signals. (Beaming “Rx/TX Max. Gain" does not affect "Front End
Sensitivity".
The progmmming of me Channel Module for strung input RF signals is the same as
in the Normal Gain Setting action. Tha only difference is in point 12. Instead of
reslormg “From End xeruitivuy” to maximum sensitivity, lower dzsimd "From End
umiuvtry" is set first. Th: rest at me pmcedum is the same as in the Normal Gain
Selling section.
1.9
8 OPERATION
8.1 GENERAL
The Channel Module does not require any supervision once it is installed and set up.
The status of the unit is indicated by Front Panel Indicators:
TX DIS Indicator is a dual function indicator.
0 TX DIS Indicator is on when nansmit is disabled as described later.
- TX DIS Indicator is flashing when one of the synthesizers is out of
lock (likely due to the Channel Module nor being properly
programmed).
- DC ON Indicator shows that the Channel Module is supplied by DC
power supply.
- TX ON Indicator is on when the Channel Module is transmitting.
- RX ON Indicator is lit when the RF input signal is above the programmed
"Rxszel threshold comparator" level.
. PW'R Indicator is a dual function indicator.
- PWR Indicator is permanently on when the output RF power is
outside ofthe allowed output power tolerance.
- PWR Indicator is flashing alternatively with VSWR Indicator when
an error is found in the personality of the Channel Module.
- VSWR Indicator is a multifunction indicator.
- VSWR Indicator is on when an excessive reflecmd power is denoted
on the Tx Antenna connector at the instant when the transmitter is
turned on.
. VSWR Indicator flashes shortly when a valid polling serial message
15 received from a controller.
8.2 TRANSMIT DISABLE
The Channel Module transmitter can be disable by TX DIS switch. TX DIS switch
is accessed via the front panel hole with a round tool 25mm (0.1") in diameter. The
first push disables the transmitter. a second push enables the transmitter. This
function is useful during Clmnnel Module set up and servicing.
8.3 RESET
RESEI‘ switch is accessed via the from panel hole w
diameter. REST when is used (a reset the (1mm:
malfunction.
WARNING
Do nor mp
damage!
ilh a round tool 7.5mm (04V) in
1 Module in an unlikely event cf
ply excessive force on me TX DIS and RESEI‘ switches not to cause
21
PROGRAMMABLE OPTIONS
2_______—_——
fire Channel Module provides several programmable options. The only option
of inleresl for the user is summarized below:
- Carrier Conn-oi Timer (CCT) sers the maximum rime me Channel Module
can remain keyed up. The Can-lei Control Timer tan be programmed for
OFF and 0.Eminutes in 60.0minures in 0.25 minure (15sec) steps as
follows:
1. Follow Steps 1 to 7 in 7.3 MODE OF OPERATION SETTING
section.
2, Move around the screen using cursor keys till "CC! Timer” field is
reached. Select the desired value of “CCT Timer" with .
>Page Down> and numeric keypad <->, <+> keys
3. Exit “Block Diagram Menu" by pressing . With cursor keys
select Yes as an answer to Would you like to update the Emma.
Press .
4. Select "File" field and men select “Exir' using cuisor keys. Press
. With cursor keys select Ya as an answer in Exit from
program. Press
Source Exif Data:
File Type : PDF
File Type Extension : pdf
MIME Type : application/pdf
PDF Version : 1.3
Linearized : Yes
Create Date : 2001:05:13 10:39:16
Producer : Acrobat Distiller 4.0 for Windows
Author : VicodinES /CB /TNN
Title : 76472.pdf
Modify Date : 2001:05:13 10:39:30-04:00
Page Count : 27
EXIF Metadata provided by EXIF.tools