Midian Electronics VS-1200-KW2 User manual

1
Installation Manual
VS-1200-KW2
Frequency Domain Scrambler with Multi-Format ANI
VS-110- KW2
Rolling Double Inversion Scrambler
VS-1100- KW2
Double Inversion Scrambler
VS-1000- KW2
Voice Inversion Scrambler
VS-1050- KW2
Voice Inversion Scrambler with Multi-Format ANI
Manual Revision: 2011-05-13
Covers Software Revisions:
VS Series: 1.34.00 and Higher
This manual & product supports the following radios:
Portables: TK-2170, TK-3170
American Communication Systems
Discover the Power of Com m unications
™
TO ORDER –VISIT http://www.ameradio.com

2
HARDWARE SPECIFICATIONS
Operating Voltage 4.75-15.5 VDC
Operating Current – VS-1200, VS-110 and VS-1100:
Power Save Mode (COR Operation) 4.5 mA typical
Power Save Mode (VOX Operation) 10 mA typical
Clear or Inversion Operation 22 mA typical
FFT Scrambling Operation 80 mA typical
Average (80-10-10 cycle) <12 mA*
Average (90-5-5 cycle) <10 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 >45 k
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:
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:
Total Number of Codes 1020
Number of Codes 255
Number of Groups 4
Number of Selectable Codes 4

3
INSTALLATION OVERVIEW
1. Test the radio for functionality.
2. Install the scrambler into the radio per the Hardware Installation Section of this manual.
3. Program the scrambler per the Product Programming Section of this manual.
4. Program the radio per the Radio Programming Section of this manual.
Note: Midian is not responsible for any damage/loss resulting from the use of Midian’s products.

4
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. 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 Two-
Way, 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)
VS-110:
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:
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.
VS-1000:
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 KL-3. The VS-1000 is compatible with Midian’s VPU
series voice inversion scramblers.
VS-1050:
Midian’s VS-1050 is a voice inversion scrambler with multi-format ANI encode. The VS-1050 has the same
scrambling features as the VS-1000, but adds 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)

5
PRODUCT PROGRAMMING
Note: Greater details of the VS series products can be found in the VS Series Technical Reference Manual.
Midian’s VS-1xxx-KW2 is programmed via Midian’s KL-3 or the new KL-4 programmer. Please reference the KL-
4 manual or the KL-3 manual for setup instructions of the KL-3 software and hardware. From the product
selection screen on the KL-3 software, select the VS-1xxx from the list and click OK.
Set the parameters of the 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 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-3 Programming: Only the Black and Green KL-3 leads need to be connected to the scrambler for
programming. Connect the green KL-3 lead to the program in hole on (see below) the scrambler and the black
KL-3 to a common ground. It will be necessary to connect the radio to a power supply. Turn on power to the radio,
click ProgramUnit! in the KL-3 software.
KL-3 Reading: The Yellow KL-3 lead, along with the Black and Green leads, is required for reading the unit.
Connect the yellow KL-3 lead the program out hole (see below) on the scrambler. It will be necessary to connect
the radio to a power supply. Turn on power to the radio, click ReadUnit! in the KL-3 software.
KL-4 Programming: Plug the board onto the KL-4. Push the power button on the KL-4 and click “Program Unit”
in the KL-3 software. The LED on the KL-4 will faintly flash if programmed successfully.
KL-4 Reading: Plug the board onto the KL-4. Push the power button on the KL-4 and click “Read Unit” in the KL-
3 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.
Program In
Program Out

6
HARDWARE ALIGNMENT
This section describes 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.
The Four 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%
A method for controlling transmit 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.
The first two measurements must be taken using a radio that has not been modified. The 2nd two measurements
require that the scrambler is installed and power is applied to the radio/scrambler. These measurements must be
taken within 15 seconds of powering the scrambler on. This is because the scrambler may enter power saving
mode after that time. Measurements made while the scrambler is in power saving mode will not be valid. The unit
ships with the power save feature enabled by default. The power save feature can be disabled via the KL-3
programming software so that it will not interfere with taking measurements, if desired. Please note that the levels
provided to the option board are different between narrow band and wide band.
1. RX Output: The goal of this procedure is to determine the audio level that would normally appear at the RX
audio insertion point in an unmodified radio. With a fully quieting signal modulated with a 1000 Hz tone at
60%. Measure the voltage level appearing at the junction of R-167 and R-169.
2. TX Output: The goal of this procedure is to determine the audio level that would normally appear at the TX
audio insertion point in an unmodified radio. Provide the radio an audio source generating a 1000 Hz tone and
key the radio. Adjust the audio source such that the modulation is at 60%. Measure the voltage level
appearing at R-170 on the radio.
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.
The scrambler must be installed and powered-on while making this measurement. Modulate a 1000 Hz tone
at 60%. Measure the audio level at TP2 on the scrambler.
4. TX Input: The goal of this procedure is to determine the audio level that the scrambler board will see at the
TX audio pickup point after it is installed.
The scrambler must be installed and powered-on while making this measurement. Provide the radio the same
audio source and level as in Step 2, generating a 1000 Hz tone and key the radio. Measure the audio level at
the TP1 on the scrambler.

7
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.
The following table shows Midian’s recommended levels for the VS-1200 at 60% modulation (mVpp) for tested
models of radios:
Radio Model RX In TX In RX Out TX Out
TK-2170, TK-3170 876 246 570 240
The following table shows Midian’s recommended levels for the VS-1000 and VS-1050 at 60% modulation
(mVpp) for tested models of radios:
Radio Model RX In TX In RX Out TX Out
TK-2170, TK-3170 756 186 786 186
Beep Volume Level:
Adjust the slider for the desired beep volume. This level is expressed as a percentage of max voice audio level.

8
HARDWARE INSTALLATION
Be certain to follow standard anti-static procedures when handling any of Midian’s products.
TK-2170/3170:
This radio requires radio firmware version 1.22.00 (checksum 08C3) or higher.
1. Remove R-170 to open the radio’s TX path and R-167 to open the radio’s RX path.
2. VS-1200-KW2, VS-110-KW2 & VS-1100-KW2 Only: Install a jumper from C-423 to the junction of Q-16
(emitter) and R-91.
3. Solder a jumper from pad SP_M in the radio to the COR Input hole on the scrambler.
4. Plug the scrambler into the options connector, CN60.
Remove R-167 Remove R-170
Install jumper
from pad SP_M
to the COR
hole on the
scrambler
Install jumper
from C423 to
Q-16 emitter

9
RADIO PROGRAMMING
TK-2170/3170:
This radio requires KPG-101D v 2.20 or higher for programming.
1. Under the “Model” menu select “Product Information” and set “Optional Board” to “Voice Scrambler”.
2. Under “Edit” “Extended Function” enable the “Echo PTT”.
3. Under the “Edit” menu select “Key Assignment” and set “Side 1” or “Side 2” under the “Top/Side” tab as
“Scrambler”. This will set the button under the PTT as the mode select button.
4. If scrambling on a per channel basis is desired or a combination of a mode button and per channel, then from
the “Zone Information” screen click on the “Channel Edit” button. Under “Scrambler Setting” enable the
“Voice Scrambler”. For scrambling on a per channel basis, this will need to be done for each channel where
scrambling is desired. If the box is checked, the radio will power up in coded mode & when that channel is
selected. When per channel scrambling is used, it is still possible to toggle in and out of scramble mode.

10
OPERATION
Mode Selection: Mode selection means a method of turning the scrambler on and off. In the VS-KW2 series
there are two ways of doing this:
Per-Channel Scramble On/Off: If scrambling on a per channel basis is being used, then switching between a
scrambled or non-scrambled channel will cause the symbol to appear or disappear.
Scramble On/Off Button: Press the radio key that was assigned in the radio programming. A tone will be
emitted from the radio and the symbol will appear on the display of the radio indicating scramble mode.
Code Selection: The VS-1200-KW2 can have up to 3 different codes programmed and the other VS-KW2 series
scramblers support up to 4 codes. The codes can be selected on a per-channel basis. Different codes can be
accessed by setting the desired scrambler code (1-4) for a radio channel using the “Scrambler Setting” under the
“Zone Information” screen’s “Channel Edit” button. Switching to the various channels can supply the user with the
desired code. The scrambler should be programmed with the same number of security codes as are
programmed into the radio. The scrambler should be programmed as “Binary Select Enable” under the “Security
Settings” or “Inversion Codes” tab.
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.
2302 East 22nd Street
Tucson, Arizona 85713 USA
Orders: 1-800-MIDIANS
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.midians.com

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
+VIN
+3.3VDD
+3.3VDD
+3.3VA
+3.3V
VAN
VAN
VAN
VAN
+3.3V
+3.3V
+3.3V
+3.3V +3.3V +3.3V
+3.3V
+3.3V
+3.3VDD
+3.3VA
AGND
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
AGND
VAN
+3.3V
+VIN
+3.3V
+3.3V
+3.3V
A_ROUTE
B_ROUTE
B_ROUTE
A_ROUTE
COR_IN
COR_IN
TRUNK_DLY
TRUNK_DLY
SIZE DOCUMENT NUMBER
REV
DATE SHEET
of
FILE NAME
SCHEMATICAPPR.
MIDIAN ELECTRONICS INC.
REV.
DWN. BY
DESIGN
509-A-1
A-1
VS-1200
C
1 1
sch_509_A1
KW2
CJS
AS
12/16/2007
07/04/2008 Copyright © 2008
SIZE DOCUMENT NUMBER
REV
DATE SHEET
of
FILE NAME
SCHEMATICAPPR.
MIDIAN ELECTRONICS INC.
REV.
DWN. BY
DESIGN
509-A-1
A-1
VS-1200
C
1 1
sch_509_A1
KW2
CJS
AS
12/16/2007
07/04/2008 Copyright © 2008
SIZE DOCUMENT NUMBER
REV
DATE SHEET
of
FILE NAME
SCHEMATICAPPR.
MIDIAN ELECTRONICS INC.
REV.
DWN. BY
DESIGN
509-A-1
A-1
VS-1200
C
1 1
sch_509_A1
KW2
CJS
AS
12/16/2007
07/04/2008 Copyright © 2008
FACTORY
(SOURCE)
NOTES:
* = NOT INSTALLED
FACTORY
DSP
R10
10K
R10
10K
R43
*
R43
*
R11
10K1%
R11
10K1%
C38
12p
C38
12p
P1-13P1-13
Q7
NTA4001
Q7
NTA4001 C39
100p
C39
100p
D8
S 1
D8
S 1
D6
S 1
D6
S 1
R17
*
R17
*
TP5TP5
R30
4.7K
R30
4.7K
C30
.1u
C30
.1u
PAD2
COR IN
PAD2
COR IN
R46
*
R46
*R55
*
R55
*
P1-15
N/C
P1-15
N/C
C27
2.2u
C27
2.2u
D9
S 1
D9
S 1
R25
1K
R25
1K
U5U5
3
1
2
4
5 6
TP13TP13 P1-17
TXI
P1-17
TXI
-
+
U7C
LMV324M
-
+
U7C
LMV324M
9
10 8
PAD3
PROG IN
PAD3
PROG IN
L1
0R
L1
0R
C19
560p
C19
560p
C2
560p
C2
560p
C10
.1u
C10
.1u
R9
10K
R9
10K
U4U4
7 4 8
2 5
1 6 3
P1-2
+7.5V
P1-2
+7.5V
TP11TP11
P1-19
RXEI
P1-19
RXEI
R36
*
R36
*
C15
.0068u
C15
.0068u
D11
S 1
D11
S 1
U3U3
R53
0R
R53
0R
P1-4
OPT 3
P1-4
OPT 3
TP1TP1
TP7TP7
R1
47K
R1
47K
R32
1K
R32
1K
TP6TP6
TP8TP8
R54
0R
R54
0R
C21
.01u
C21
.01u
C12
.1u
C12
.1u
R48
*
R48
*
P1-6
OPT 6
P1-6
OPT 6
44
C24
220p
C24
220p
C42
.1u
C42
.1u
VR3
MIC5206
VR3
MIC5206
IN1
1
ENA
3
GND
2RES 4
OUT 5
P1-8
PTT OUT
P1-8
PTT OUT
C20
2.2u
C20
2.2u
P1-10
PROG IN
P1-10
PROG IN
C37
560p
C37
560p
C22
.1u
C22
.1u
R14
100K
R14
100K
R45
0R
R45
0R
C33
.1u
C33
.1u
D10
S 1
D10
S 1
C31
.1u
C31
.1u
TP18TP18
P1-12
TXO
P1-12
TXO
R21
36K
R21
36K
R33
1K
R33
1K
C41
.1u
C41
.1u
R40
100K
R40
100K
C5
1u
C5
1u
R20
1.2M
R20
1.2M
R47
0R
R47
0R
C1
560p
C1
560p
D4
S 1
D4
S 1
R26
1K
R26
1K
C45
.01u
C45
.01u
22
R4
47K
R4
47K
P1-14
N/C
P1-14
N/C
TP9TP9
PAD8PAD8
C32
10u
C32
10u
TP15TP15
C43
560p
C43
560p
R18
56K
R18
56K
R41
47K
R41
47K
-
+
U7B
LMV324M
-
+
U7B
LMV324M
6
57
R49
2R
R49
2R
R28
4.7K
R28
4.7K
TP10TP10
C13
.1u
C13
.1u
C7
.1u
C7
.1u
P1-16
SIDE TONE
P1-16
SIDE TONE
PAD6
AUDIO ENH
PAD6
AUDIO ENH
P1-18
RXEO
P1-18
RXEO
-
+
U7D
LMV324M
-
+
U7D
LMV324M
13
12 14
411
R50
2R
R50
2R
TP17TP17
TP4TP4
C29
.1u
C29
.1u
C25
.1u
C25
.1u
55
R2
47K
R2
47K
C36
10u
C36
10u
P1-1
GND
P1-1
GND
R38
47K
R38
47K
C28
.1u
C28
.1u
R52
4.7K
R52
4.7K
P1-3
OPT 1
P1-3
OPT 1
R51
2R
R51
2R
C18
.001u
C18
.001u
TP3TP3
R23
*
R23
*
R12
10K1%
R12
10K1%
P1-20
MODE IN
P1-20
MODE IN
C17
*
C17
*
C48
.1u
C48
.1u
C46
.1u
C46
.1u
C3
.1u
C3
.1u
VR1
MIC5206
VR1
MIC5206
IN1
1
ENA
3
GND
2RES 4
OUT 5
TP2TP2
R39
47K
R39
47K
C14
100p
C14
100p
VR2
MIC5206
VR2
MIC5206
IN1
1
ENA
3
GND
2RES 4
OUT 5
R15
100K
R15
100K
R31
47K
R31
47K
C16
.0068u
C16
.0068u
P1-5
N/C
P1-5
N/C
PAD1
EMER IN
PAD1
EMER IN
R13
27K
R13
27K
C23
.1u
C23
.1u
Q6
NTA4001
Q6
NTA4001
R44
*
R44
*
R42
1.2M
R42
1.2M
33
C26
2.2u
C26
2.2u
C4
560p
C4
560p
D5
S 1
D5
S 1
C40
2.2u
C40
2.2u
C11
.0047u
C11
.0047u
R35
*
R35
*
P1-7
OPT 5
P1-7
OPT 5
U6
*
U6
*
CS
1
SO
2
SI
5
SCK
6
VCC 8
HOLD 7
WP 3
GND 4
TP12TP12
-
+
U7A
LMV324M
-
+
U7A
LMV324M
2
31
R7
47K
R7
47K
Y1Y1
Q8
*
Q8
*
R19
75K
R19
75K
C9
.01u
C9
.01u
C35
10u
C35
10u
R22
*
R22
*
R37
100K
R37
100K R3
47K
R3
47K
D1
S 1
D1
S 1
P1-9
PTT IN
P1-9
PTT IN
U1U1
16
13
42
11
9
4
3
37
8
47
28
24
27
20
18
36
43
46
48
45
41
644
1 2
38 40 39
34
21
22
7
35
17
19
29
25
23
26
12
10
5
15
14
33
32
30
31
49
D7
S 1
D7
S 1
C44
39p
C44
39p
R24
4.7K
R24
4.7K
C47
.22u
C47
.22u
11
P1-11
PROG OUT
P1-11
PROG OUT
C34
.1u
C34
.1u
PAD4
PROG OUT
PAD4
PROG OUT
R16
8.2K
R16
8.2K
D2
S 1
D2
S 1
R8
4.7K
R8
4.7K
R6
47K
R6
47K
PAD7
TRUNK DELAY
PAD7
TRUNK DELAY

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