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Midian VS-1200 Manual

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Frequency Domain Voice Scrambler with Multi-Format ANI
Manual Revision: 2009-06-26
Covers Firmware Revisions:
VS1xxx: 01.31.00 & Higher
Covers Hardware Revisions:
VS1xxx: 359B
Voice Inversion Scrambler
Voice Inversion Scrambler with Multi-Format ANI
VS-1200
VS-1000
VS-1050
1

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Summary of Contents for Midian VS-1200

  • Page 1 VS-1200 Frequency Domain Voice Scrambler with Multi-Format ANI VS-1000 Voice Inversion Scrambler VS-1050 Voice Inversion Scrambler with Multi-Format ANI Manual Revision: 2009-06-26 Covers Firmware Revisions: VS1xxx: 01.31.00 & Higher Covers Hardware Revisions: VS1xxx: 359B...

  • Page 2: Hardware Specifications

    ** - This is based on FFT scrambling. When using voice inversion this will vary. *** - The VS-1000 and VS-1050 support 4.75 to 15.5 VDC. The VS-1200 supports 4.75 to 10 VDC. If a higher voltage input is needed on the VS-1200 a 4.7 Volt Zener diode must be installed in series with the voltage input lead.

  • Page 3: General Information

    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 quantitized 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.

  • Page 4: Installation Overview

    4. Program the scrambler 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. RADIO PROGRAMMING For any programming instructions for a particular radio, please consult Midian’s application notes for the VS-1xxx series, if available.

  • Page 5: Hardware Installation

    The VS-1000 and VS-1050 support 4.75 to 15.5 VDC. The VS-1200 supports 4.75 to 10 VDC. If a higher voltage input is needed on the VS-1200 a 4.7 Volt Zener diode must be installed in series with the voltage input lead.
  • Page 6 P2-3 – Code Select 0 – This line would be connected to Binary Select 1. For 2-line to 4-line binary this would be the least significant bit (LSB). Note: The VS-1200 can only use 1-line or 2-line binary as it is only capable of 3 codes.

  • Page 7: Hardware Alignment

    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.
  • Page 8 3. RX Input: The goal of this procedure is to determine the audio level that the scrambler board will see at the RX audio pickup point after it is installed. This requires a partial installation of the scrambler, even if only temporary.

  • Page 9: Product Programming

    After programming or reading the VS-1xxx turn off the scrambler for 3 seconds and then turn back on. Note: For the VS-1200 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.

  • Page 10: Operation

    2-Line Binary: If using the binary mode and up to 4 codes are programmed this provides selection of up to 4 codes depending on the state of the code select lines. Note: The VS-1200 only supports up to 3 codes.

  • Page 11: Technical Notes

    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.
  • Page 12 MIDIAN CONTACT INFORMATION Midian Electronics Inc. 2302 East 22 Street Tucson, Arizona 85713 USA Orders: 1-800-MIDIANS Phone: 520-884-7981 Fax: 520-884-0422 E-mail: sales@midians.com Web: www.midians.com...
  • Page 13 2.2u NOTES: P1-2 (SOURCE) +VIN * = NOT INSTALLED 560p U7:1 .0068u P1-4 .1uF 100K U7:2 .001u DOCUMENT NAME VS-1000/VS1050 MIDIAN ELECTRONICS, INC. 8.2K WIRED cs7359b8-vs10wire .01u APPR DATE: DWN BY: SCHEMATIC SHEET PROJECT NUMBER 7359 DESIGN: 2007-03-01 REV: 2009-10-20 COPYRIGHT ©...
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  • Page 17 2.2u NOTES: P1-2 (SOURCE) +VIN * = NOT INSTALLED 560p U7:1 .0068u P1-4 .1uF 100K U7:2 .001u DOCUMENT NAME VS-1200 MIDIAN ELECTRONICS, INC. 8.2K WIRED cs7359b8-vs12wire .01u APPR DATE: DWN BY: SCHEMATIC SHEET PROJECT NUMBER 7359 DESIGN: 2007-03-01 REV: 2009-10-20 COPYRIGHT ©...
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This manual is also suitable for:

Vs-1050Vs-1000

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