Operating Voltage 4.75-9.5 VDC
Operating Current – VS-1200, VS-110 & VS-1100: Power Save Mode (COR Operation) 2.5 mA typical
Power Save Mode (VOX Operation) 10 mA typical
Clear or Inversion Operation 29 mA typical
FFT Scrambling Operation 83 mA typical Average w/COR Power Save (80-10-10 cycle) <17 mA*
Average w/COR Power Save (90-5-5 cycle) ~10.5 mA*
Operating Current – VS-1000 & VS-1050: Power Save Mode (COR Operation) 2.5 mA typical
Power Save Mode (VOX Operation) 10 mA typical
Clear or Inversion Operation 17.5 mA typical
Average w/COR Power Save (80-10-10 cycle) <5 mA*
Average w/COR Power Save (90-5-5 cycle) <4 mA*
Operating Temperature -30 - +60 C
Frequency Response 300-3000 Hz**
Input Impedance >47 kΩ
Input Level (TX) 0.05-2.5 VPP
Input Level (RX) 0.05-2.5 VPP
Audio Output Impedance < 1200 Ohm
* - The transmit and receive cycles are based on scrambled mode. When using clear mode, the consumption will decrease.
** - This is based on FFT scrambling. When using voice inversion this will vary.
SECURITY SPECIFICATIONS
VS-1200:
Total Code Combinations ~6.2 x 10^23
Actual Code Combinations ~4 Billion
Number of Selectable Keys 3
Levels of Security 4
Inversion 2100-4100 Hz (0-15 Hz resolution)
Level 1 16 bins
Level 2 32 bins
Level 3 64 bins
VS-1100 & VS-1150:
Total Number of Codes 32
Number of Selectable Codes 4
VS-1000 & VS-1050:
Number of Selectable Keys 4
Inversion Frequency Range 2100-4100 Hz (0-15 Hz resolution)
VS-110 & VS-115:
Total Number of Codes 1020
Number of Codes 255
Number of Groups 4
Number of Selectable Codes 4
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ANI SPECIFICATIONS
DTMF ANI Length Up to 6-digits
DTMF ANI Timing 60/40 msec (Programmable)
5-Tone ANI Length Up to 6-digits
5-Tone ANI Timing Programmable
G-Star ANI Range 0001-9999
G-Star ANI Timing 320 msec
Motorola’s MDC-1200 ANI Range 0000-FFFF
Motorola’s MDC-1200 ANI Timing ~180 msec
Kenwood’s FleetSync Unit ID Range 1000-4999
Kenwood’s FleetSyncUnit ID Timing ~100-150 msec
FMP ID length 5 Digits
FMP Group length 3 Digits
Midian’s FMP length ~264msec
Midian’s FMP ID and Group range 0-9 and A-F
Note: For more information on Midian’s FMP and the VS-115, VS-1150 and VS1050 please see the VS-series
Technical Reference Manual.
GENERAL INFORMATION
VS-1200:
The VS-1200 is a Digital Signal Processor (DSP) based Frequency Domain voice scrambler offering a high level
of voice privacy. The DSP converts the analog signal into quantized digital data. It then converts the “Time
Domain” signal into the “Frequency Domain”. This results in an audio “frequency spectrum”, which is then
partitioned into bins that are encrypted by the non-linear key generator. The digitized data is converted back to
the analog realm using a digital to analog converter.
The above technique and the lack of synchronization result in excellent audio quality, high security and enable the
VS-1200 to be used in virtually any type of radio system. These systems include HF SSB, Conventional TwoWay, Trunking, Voting and Simulcast.
In addition to the scrambling functions the VS-1200 offers ANI and Emergency ANI encode in the following
formats:
• Motorola’s MDC-1200
• Kenwood’s FleetSync
• Harris’ G-Star (aka GE-Star)
• DTMF
• 5-Tone (all formats)
• Midian’s FMP (encode and decode) with auto descramble
VS-110 & VS-115:
Midian’s VS-110 is a rolling double inversion scrambler that offers 1020 possible codes (4 groups with 255 codes
per group). Of these codes the scrambler may be programmed with up to 4 of these codes. The VS-110 series is
compatible with Icom’s UT-110.
VS-1100 & VS-1150:
Midian’s VS-1100 is a double inversion scrambler (aka split-band scrambler) that offers 32 possible codes. Of
these 32 codes the scrambler may be programmed with up to 4 of these codes. The VS-1100 series is compatible
with Midian’s VPU-6, Icom’s UT-109 or Inysa’s XPTO.
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VS-1000 & VS-1050:
Midian’s VS-1000 voice inversion scrambler provides an entry level of voice security for two-way radio
communications. The VS-1000 provides up to 4 different inversion frequencies that are button selectable. These
inversion frequencies are programmable using Midian’s MPS. The VS-1000 is compatible with Midian’s VPU
series voice inversion scramblers.
Note: For more information on Midian’s FMP and the VS-115, VS-1150 and VS1050 please see the VS-series
Technical Reference Manual.
INSTALLATION OVERVIEW
1. Test the radio for functionality.
2. Program the scrambler per the Product Programming Section of this manual.
3. Install the scrambler into the radio per the Hardware Installation Section of this manual.
4. Program the radio per the Radio Programming Section of this manual.
*** Midian is not responsible for any damage/loss resulting from the use of Midian’s products.
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PRODUCT PROGRAMMING
The VS-1xxx IC-1 is programmed using Midian’s KL-4F and the MPS software. Please reference the KL-4 manual
for setup instructions of the KL-4 hardware.
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.
Open the software and choose product from product tree then set appropriate comport selection in the MPS
software as needed. Set the parameters of the scrambler 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_vX_xx\Additional Default Files\VS-1xxx\Icom\VS-1xxx
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.
Programming: Plug the board onto the KL-4 P-2 connector. Push and hold the power button on the KL-4 and
click “Program Unit” in the MPS software. The LED on the KL4-F will flash if programmed successfully.
Reading: Plug the board onto the KL-4 P-2 connector. Push and hold the power button on the KL4 and click
“Read Unit” in the MPS software.
Note: The security pass phrases can use any 8-bit ASCII keyboard characters. These include the characters on a
typical English keyboard such as 0-9, A-Z (upper and lower case), *, #, @, $, etc. Spaces are also allowed.
Midian does not recommend using international language character such as ñ, ä, ß, ü, é, etc. as these have not
been tested. Please also note that the pass phrases are case sensitive.
Important Note: Do not attempt to ‘clone’ the scrambler by reading one and then programming another. When
the scrambler is read, the pass phrases will be read out as “<undefined>”. If another scrambler is then cloned
with this information, the scramblers will be incompatible because they have different pass phrases. To ensure
scramblers communicate with each other, program them from a saved file.
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HARDWARE ALIGNMENT
This section describes how to determine and set the audio levels.
Audio Levels Overview:
To ensure the best audio quality, the scrambler must be configured to match the audio levels used by the radio.
The scrambler 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 scrambler only has control of audio
voltage levels, not input and output impedances. These impedances can dramatically influence the levels.
After the latest MPS has been installed default programming files for specific radio models can be found at:
C:\Apps\Midian\MPS\MPS_vX_xx\Additional Default Files\VS-1xxx\Icom\VS-1xxx
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. Measure the TX and RX audio levels at the jumper break points. This will be the preliminary Voice Audio
Level set in the MPS for TX out and RX out.
4. Break the RX, TX and PTT jumpers
5. Install the VS-1xxx 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*.
6. While in receive mode, and using the EXACT set up as in step 2, measure the signal level at TP-2*.
7. In the MPS under audio levels set the TX IN to the same level as measured in step 5, for a preliminary
adjustment set the TX OUT for the level measured in step 3. Set the RX IN to the same level as measured in
step 6 and for a preliminary adjustment set the RX OUT for the level measured in step 3. Program the VS1xxx.
8. 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.
9. 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.
*Please reference the pictorial at the end this manual for location of test points.*
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Radio Model
RX In
TX In
RX Out
TX Out
Programming the Audio Levels:
After determining the audio levels at the audio hookup points, it will be necessary to program the scrambler 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
for each of the audio hookup points. Adjust the slider bar such that the value appearing in the appropriate column
matches what was measured as closely as possible. Midian recommends the following values based on 60%
modulation:
The following table shows Midian’s recommended levels in mVpp for the VS-1xxx at 60% modulation for tested
models of radios:
Be certain to follow standard anti-static procedures when handling any of Midian’s products.
Only open the PTT path of the radio if you will be using the ANI/ENI functions of the VS-1200 & VS-1050.
F-3:
Remove W2 to open the radio’s TX path, W10 to open the radio’s RX path, and W1 to open the radio’s PTT path.
Plug the unit into the options connector located behind the rubber stopper under the battery. These instructions
are for radio serial numbers 50,000 and higher.
F-4:
Remove W2 to open the radio’s TX path, W12 to open the radio’s RX path, and W1 to open the radio’s PTT path.
Plug the unit into the options connector located behind the rubber stopper under the battery. These instructions
are for radio serial numbers 50,000 and higher.
F-3G, F-4G:
Open jumper C to open the radio’s TX path, jumper F to open the radio’s RX path, and Jumper D to open the
radio’s PTT path. Plug the unit into the options connector located behind the rubber stopper under the battery.
F-14, F-24:
The unit plugs into the options connector under the battery. Before plugging the unit in, open jumper MIC to open
the radio’s TX path, jumper DISC to open the radio’s RX path and jumper PTT to open the radio’s PTT path.
F-30, F-40:
Open jumper CP C to open the radio’s TX path, jumper CP A to open the radio’s RX path, and jumper CP B to
open the radio’s PTT path. The unit plugs into the options connector located on the main board.
F-30G, F-40G:
Open jumper B to open the radio’s TX path, jumper A to open the radio’s RX path, and jumper G to open the
radio’s PTT path. The unit plugs into the first options connector (labeled as Option One) located on the main
board.
Note: Some F-30G, F-40G radios have an issue that when jumper G is cut, the radio still does not open the PTT
path. If this occurs it will be necessary to program the scrambler as PTT Common with a low negative logic.
F-33G, F-43G:
The unit plugs into the options connector under the battery. Before plugging the unit in, open jumper C to open
the radio’s TX path, jumper F to open the radio’s RX path, and jumper D to open the radio’s PTT path.
F-70, F-80:
Before installing the unit, open the radio’s TX path by opening CP-1, open the RX path by opening CP-2, and
open the PTT path by opening CP-4. The unit plugs into the options connector located on the main board.
F-120, F-220:
Before installing the unit, 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
located on the main board.
F-320, F-420, F-520, F-620:
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Open jumper A to open the radio’s TX path, jumper B to open the radio’s RX path, and jumper C to open the
radio’s PTT path. The unit plugs into the options connector located on the main board.
F-1020, F-2020:
Open jumper MIC to open the radio’s TX path, jumper AFO to open the radio’s RX path, and jumper PTT to open
the radio’s PTT path. The unit plugs into the options connector located on the main board.
F-1720, F-1820:
Open jumper “IO MIC” to open the radio’s TX path, jumper “AF OUT” to open the RX path. Additionally close CP-
37. The unit plugs into the options connector located on the main board.
For mode select, program the radio’s option button under Common > Key & Display as OPT1 Momentary/L
(Active Low).
F-30G, F-40G:
For mode select, program the radio’s option button under Common>Key & Display as OPT11 Momentary/L
(Active Low). If you use the second options connector, program as OPT21 Momentary/L (Active Low).
OPERATION
Scrambler 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: Press and hold the radio key that was assigned in the radio programming. One to four tones will
be emitted as the scrambler toggles through the codes. The number of codes available depends on programming.
ANI Operation:
Transmitting ANI: When the PTT button is pressed and/or released the VS-1200 or VS-1050 will key the radio
and transmit the programmed ANI.
Transmitting Emergency ANI: When the Emergency button on the radio is pressed (if programmed) the VS1200 or VS-1050 will key the radio and transmit the programmed ENI for the programmed number of times.
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TECHNICAL NOTES
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.
MIDIAN CONTACT INFORMATION
Midian Electronics, Inc.
2030 N. Forbes Blvd. #101
Tucson, Arizona 85745 USA