Operating Voltage 4.75-8.2 VDC
Operating Current During satellite acquisition 60 mA typical
After latitude and longitude have been acquired 40 mA typical
GPS power save 8 mA typical
Operating Temperature -30 - +60 C
Frequency Response 300-3000 Hz**
Input Impedance >45 kΩ
Input Level (TX) 0.05-2.5 VPP
Input Level (RX) 0.05-2.5 VPP
Audio Output Impedance < 1200 Ohm
ANI SPECIFICATIONS
Midian’s FMP Unit ID Range 00000-FFFFF
Midian’s FMP Group ID Range 000-FFF
Midian’s FMP ANI Timing with Coordinates 413 msec
Midian’s FMP ANI Timing without Coordinates 200 msec
SECURITY SPECIFICATIONS
GPS-2 IC-2:
Number of Selectable Keys 16
Inversion Frequency Range 2100-4100 Hz (0-15 Hz resolution
5B
INSTALLATION OVERVIEW
1. Test the radio for functionality.
2. Program the radio per the Radio Programming Section of this manual.
3. Install the GPS-2 board, GPS antenna (portables only) and antenna cable into the radio per the installation
section of this manual.
4. Program the GPS board per the Product Programming Section of this manual.
Note: Midian is not responsible for any damage/loss resulting from the use of Midian’s products
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GENERAL INFORMATION
Midian’s GPS-2 IC-2 is a GPS receiver that encodes a user’s GPS coordinates along with the user’s ANI and
Emergency ANI to display on Midian’s CAD-800 or CAD-800U base station controllers. The following is a list of
benefits provided by ANI systems:
• Allows dispatchers to know who he or she is talking to.
• Identify system abusers.
• Identify emergency conditions.
• Assign calls fairly.
• Track user location.
The GPS-2 IC-2 encodes ANI and Emergency ANI along with the users GPS location using Midian’s FMP
signaling. This is decoded by Midian’s CAD-800 or CAD-800U which uses a Google Earth interface to display the
unit’s location on a map.
The GPS-2 IC-2 also offers Man-Down* and Lone Worker features. If the unit does not detect movement (ManDown) or receive any user interaction (PTT or Lone Worker Reset button) for a programmable period of time the
unit can key the radio and send the Emergency ANI.
In addition to the above encoding features, the GPS-2 IC-2 can decode commands from the CAD-800 such as
Polling, Selective Calling, Radio Disable, Radio Enable, Spy (Remote Monitoring) and Emergency Acknowledge.
Polling allows the dispatcher to request a unit’s GPS location. Selective calling can be to call an individual unit, a
group of units or all units. If a unit becomes lost or stolen, it can be disabled, so it cannot interfere with the
system**. If the unit is later recovered the unit can be re-enabled. The Spy function enables the dispatcher to
eavesdrop on a unit during an emergency or other condition***. If multiple Emergency IDs are transmitted, the
dispatcher can stop subsequent Emergency ID transmissions using the Emergency Acknowledge feature.
The GPS-2
location), in the following formats:
• Motorola’s MDC-1200
• Kenwood’s FleetSync
• Harris’ G-Star (aka GE-Star)
• DTMF
• 5-Tone (all formats)
Note: To achieve full encode and decode functions in the mobile radios a modification is required (page 13), if
GPS location reporting only is desired then no modification is required.
If full encode and decode functions are desired in the Icom mobile radios please specify Mod 1476 when
placing the order.
Important note: With the above modification, the GPS-2 board MUST be programmed with a special
programming file. This will be found after installing the MPS at:
C:\Apps\Midian\MPS\MPS_v5_xx\Additional Default Files\GPS-2\Icom\ F-5061_6061 or 9511 Mod 1476
IC-2
also offers inversion voice scrambling and ANI and Emergency ANI encode only (no GPS
*If the Man-Down feature is desired it must be specified at time of order*
**In some models PTT is not disabled however TX modulation is killed**
***Live microphone is only available in the F-9511**
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PRODUCT PROGRAMMING
Midian’s GPS-2 IC2 is programmed via Midian’s KL-4 programming interface and MPS software.
Go to our website midians.com and under downloads> software download the latest MPS software version. If
using the supplied CD-ROM insert it into the PC’s CD-ROM drive. In the browser that will pop-up, install the MPS
programming software. Be certain that the “Install KL-4 USB Driver” box is checked during the installation
process.
Open Windows’ Control Panel and go to Device Manager.
Open Ports (COM& LPT) to identify the port assignment issued by computer. Plug in the KL4 programmer to the
USB port and the screen will flash and show the device location.
From the product selection screen on the programming software, select the appropriate GPS-2 product from the
list and click OK. Set the parameters of the GPS-2 IC2 software to fit the application. If any clarifications on a
feature are required, move the mouse cursor over the feature name until the question mark appears and right
click, a definition of the feature will be shown.
After the latest MPS has been installed default programming files for specific radio models can be found at:
C:\Apps\Midian\MPS\MPS_v5_xx\Additional Default Files\GPS-2\Icom
After entering the parameters, save the file by going to File - Save As. Enter the file name in the File Name block
and click Save. Saving the file will allow for quick and easy reprogramming of units.
KL-4 Programming: Plug the board onto the KL-4’s IC2 connector P3. Push and hold the power button on the
KL-4 and click “Program Unit” in the programming software.
KL-4 Reading: Plug the board onto the KL-4’s IC2 connector P3. Push and hold the power button on the KL-4
and click “Read Unit” in the programming software.
Note: The GPS-2 IC2 has a system I.D. which is a 6 digit hexadecimal number defaulted to 4D6964, the CAD800 is also defaulted to this I.D. It is recommended to change this to a unique number for privacy reasons. When
using a unique I.D. the CAD-800 will also need to be programmed with the same system I.D.
Important Note: When using a unique system I.D. do not attempt to ‘clone’ the GPS-2 board by reading one
and then programming another. When the GPS-2 board is read, the system I.D. will not be read out, but will
be displayed as “4D6964” in the MPS. If another GPS-2 board is then cloned with this information, it will be
programed with the default system I.D. and be incompatible with the CAD-800. To ensure the GPS-2 board
stays compatible with the CAD-800 always program them from a saved file.
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PORTABLE GPS ANTENNA & CABLE INSTALLATION
The GPS antenna needs to be installed in the same position as shown in the below pictures for the tuning to be
correct. If the position is off the GPS module may have difficulty acquiring a fix. Care must be taken when routing
the antenna cable to avoid pinching the cable when the radio is reassembled. If the cable is pinched or length is
changed it may de-tune the GPS antenna causing problems acquiring a fix.
1. Disassemble radio per manufactures disassembly instructions in radio service manual.
2. IC F3023: Mount the GPS antenna in the slot in the chassis for the volume control just under the rubber
gasket on top. Fix to radio using hot glue, RTV or epoxy, on the IC F3023 solder the antenna shield to the
radio shield and route the cable as shown, care should be taken not to pinch or fold the cable.
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3. IC F3161 First clip the volume control and power switch pins as close to the circuit board as possible,
place a small piece of insulating tape over the volume control connections to protect against shorts to the
GPS antenna or volume control. Scrape a small area of ground plane between the power switch
connections and tin with solder.
4. Mount the GPS antenna in the slot in the chassis for the volume control just under the rubber gasket on
top. Fix to radio using hot glue, RTV or epoxy. Solder the shield for the GPS antenna to the ground
between the power switch connections being very careful not to short the ground to the power switch.
Route the cable as shown. Use hot glue or tape to secure the cable and keep it in place during
reassembly, care should be taken not to pinch or fold the cable.
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5. Route antenna cable around and below the GPS-2 board and install the board into the option
board connector of the radio. Connect the FL connector to P6 of the GPS-2 board.
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Smith chart and return loss of GPS antenna after installation in correct position and the radio closed.
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MOBILE GPS ANTENNA CABLE INSTALLATION
IC F5061, IC F6061 and IC F9511
1. Disassemble radio per manufactures disassembly instructions in radio service manual.
2. Drill a 1/4 inch hole in the rubber “bush” next to the power wires and mount the SMA connector in the
rubber “bush”. Tighten the nut on the SMA connector so that at least 5.5mm of threads extend past the
mounting nut.
3. Route the GPS cable as shown below, install the GPS-2
G
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HARDWARE INSTALLATION
Be certain to follow standard anti-static procedures when handling any of Midian’s products.
F3021, F3023, F4021, F4023:
Open the radio’s TX path by opening the MIC jumper, open the RX path by opening the DISC jumper, and open
the PTT path by opening the PTT jumper.
The unit plugs into the options connector J5 located under the options door located behind the battery. Plug the
GPS antenna cable FL connector into P6 of the GPS-2 IC2 board. Reassemble radio.
F3161, F4161:
Open the radio’s TX path by opening the MIC jumper, open the RX path by opening the AFOUT jumper, and open
the PTT path by opening the PTT jumper.
The unit plugs into the options connector J1, located just below the DSP connector. Plug the GPS antenna cable
FL connector into P6 of the GPS-2 IC2 board. Reassemble radio.
F5061, F6061:
Open the radio’s TX path by opening the “A” jumper, open the RX path by opening the “B” jumper, and open the
PTT path by opening the “C” jumper, if Mod 1476 is installed do not open jumper C.
The unit plugs into the options connector J1 located on the main board of the radio. Plug the GPS antenna cable
FL connector into P6 of the GPS-2 IC2 board. Connect SMA to externally mounted GPS antenna. Reassemble
radio.
F9511:
Open the radio’s TX path by opening the “A” jumper, open the RX path by opening the “B” jumper, and open the
PTT path by opening the “C” jumper, if Mod 1476 is installed do not open jumper C.
The unit plugs into the options connector J2 located on the main board of the radio. Plug the GPS antenna cable
FL connector into P6 of the GPS-2 IC2 board. Connect SMA to externally mounted GPS antenna. Reassemble
radio.
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HARDWARE ALIGNMENT
This section describes how to determine and set the audio levels, the default programming file contains the audio
levels found at the time this manual was written. Default files can be found at:
C:\Apps\Midian\MPS\MPS_v5_xx\Additional Default Files\GPS-2\Icom
Audio Levels Overview:
To ensure the best audio quality, the GPS-2 IC2 must be configured to match the audio levels used by the radio.
The GPS-2 IC2 uses programmable gain amplifiers to accomplish this. Determining the gain settings for these
amplifiers is an involved process, so Midian simplified this process by developing an algorithm that requires the
technician to make only four voltage measurements. From these four measurements, all of the many internal
settings are determined.
Still, getting the best audio quality will likely require a bit of trial and error. The GPS-2 IC2 only has control of
audio voltage levels, not input and output impedances. These impedances can dramatically influence the levels.
Voltage Measurements:
An oscilloscope and a communications test set/service monitor are required for the measurements. It is
recommended that the measurements be recorded in units of mV peak-to-peak. Each measurement must be
taken with system modulation at either 60% or 100%, but Midian recommends using 60%
1. A method for controlling transmitter modulation is required for accurate measurements in the TX mode. A
small speaker held in place near the microphone by a rubber band can serve this purpose in most cases. Use
a sine-wave generator to inject a 1000 Hz tone into the speaker. Adjust the output of the sine wave generator
so that the transmitter produces 60% of rated modulation while PTT is pressed. Note that if the audio source
(such as a speaker) is moved even slightly, the TX modulation may change significantly. Care must be taken
to avoid changing the TX modulation while taking the measurements
2. Using a service monitor send a fully quieting signal (-50 dBm) to the receiver with a 1000 Hz tone at 60%
modulation, adjust the volume of the receiver to a comfortable listening level and measure the audio level at
the speaker using an AC coupled oscilloscope.
3. Set the radio programming software for an option board and set all parameters to accommodate a GPS-2 IC2
board then program the radio.
4. Install the unit and power up the radio, using the EXACT set up as in step 1 and while in transmit mode
measure the signal level at TP-1.
5. While in receive mode, and using the EXACT set up as in step 2, measure the signal level at TP-2.
6. In the software under audio levels set the TX IN to the same level as measured in step 4, for a preliminary
adjustment set the TX OUT for the same level. Set the RX IN to the same level as measured in step 5 and for
a preliminary adjustment set RX OUT for the same level. Program the unit.
7. Using the EXACT set up as in step1 and while in transmit mode verify the modulation is still at 60%, if not
adjust the TX OUT level accordingly.
8. While in receive mode, and using the EXACT set up as in step 2 verify the audio level at the speaker is the
same level that was measured in step 2, if not adjust the RX OUT level accordingly.
Programming the Audio Levels:
After determining the audio levels at the audio hookup points, it will be necessary to program the GPS-2 IC2 to
match these levels. In the programming software, there is a slider control on the Audio Levels Screen for each of
the of four audio hookup points. Locate the column that corresponds to the modulation and units of measurement
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for each of the audio hookup points. Adjust the slider bar such that the value appearing in the appropriate column
Radio Model
RX In
TX In
RX Out
TX Out
matches what was measured as closely as possible.
Midian recommends the following values at 60% modulation in the mVpp column:
For all the radios listed below the term Mode will refer to scramble/clear, inversion code select or Lone-Worker
on/off functions, depending on how the GPS-2 board is programed.
F-3021, F-3023, F-4021, F-4023:
For mode select, program the desired button under Common > Key & Display as OPT1 Momentary/L (Active
Low).
If using Emergency ANI, under Common > Key & Display set the Emer button as OPT 3 Out/L. The GPS-2 IC-2
will key the radio and transmit the programmed ENI for the programmed number of times, GPS location is only
available if using the Midian FMP w/GPS signaling option.
F-5061, F-6061 and F9511:
For mode select, program the desired button under Common > Key & Display as OPT1 Momentary/L (Active
Low).
If using Emergency ANI the GPS-2 board needs Mod 1476 and the radio needs the PTT modification (see
technical notes on next page), under Common > Key & Display set the Emer button as OPT 3 Momentary/L
(Active Low). GPS location is only available if using the Midian FMP w/GPS signaling option.
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OPERATION
Mode Operation:
Mode Select: Press the radio key that was assigned in the radio programming. A tone followed by a high tone
will be emitted when entering scramble mode. A tone followed by a low tone will be emitted when entering clear
mode.
Code Select: When the unit is programmed with multiple security keys, pressing and holding the mode button
can access different keys. The scrambler will emit a number of beeps corresponding to the code number the
scrambler stepped to (i.e. 2 beeps equals inversion code 2). The maximum number of codes is 4.
ANI Operation:
Transmitting ANI: When the PTT button is pressed and/or released the GPS-2 will key the radio and transmit the
programmed ANI. GPS location is only available if using the Midian FMP w/GPS signaling option.
Transmitting Emergency ANI: When the Emergency button on the radio is pressed (if programmed) the GPS-2
will key the radio and transmit the programmed ENI for the programmed number of times. GPS location is only
available if using the Midian FMP w/GPS signaling option.
TECHNICAL NOTES
F-5061, 6061, 9511: Due to limitations in how the radio handles the PTT output from the options board the mobile
radios listed F-5061, 6061 and the 9511, will have GPS location reporting only. No other CAD fleet management
functions are available unless the radio and GPS-2 IC2 board are modified
PTT modification: Connect a wire to the front panel microphone connector pin 4 to the PTT output of the GPS-2
IC-2 board. On the GPS-2 IC-2 board resistor R62 must be removed. The GPS-2 IC-2 board can be modified
(including the wire) at the factory but this must be specified at the time the order is placed, please specify Mod
1476. With this modification the PTT jumper (jumper C) in the radio remains closed.
Important note: With the above modification, the GPS-2 board must be programmed with a special
programming file. This will be found at:
C:\Apps\Midian\MPS\MPS_v5_xx\Additional Default Files\GPS-2\Icom\ F-5061, 6061 or 9511 mod 1476
IC-F9511: This radio does not support the tones that are generated by the GPS-2 board, therefore go-ahead,
mode select, code select and call tones will not be heard through the speaker. There is no visual indication of
scramble/clear in the display. The GPS-2 board does have an open drain, mode output FET which could be
connected to an external LED or relay for a call or scramble/clear indication.
Radio Compatibility: Midian has taken the utmost care to ensure the option board integrates into the radio with
minimal impact to the features of the radio. However, some features may not be available in the radio when an
option board is used. If a feature is not available, please contact Midian to see if the feature can be added.