Integrated Microwave Technologies 25VST Ultra Compact SD COFDM Transmitter 25VST User Manual

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VSTX
HD/SD COFDM Transmitter
User Manual
IMT PUBLICATION: M22-0002-00A, REV 2.3
VSTX User Manual
Revision History
Date
Revision
Modified By
Description
October 1, 2009
October 12. 2011
1.0
1.1a
JB
Mike Hardy
Initial release
Major Update and cleanup. Removed ASI/SDI.
October 27. 2011
November 28. 2011
1.1b
2.0
Updated ribbon table
Update
December 19. 2011
2.1
January 10. 2012
January 25. 2012
2.2
2.3
Mike Hardy
Sean Van
Alexander
Minicozzi
Jason Wang
Jason Wang
Jason provided FCC and IC Statements
Added FCC & IC Label requirements
Added RP-SMA Antenna Port for 25VST
IMT VSTX
Users Manual
IMT Publication: M22-0002-00A
IMT, LLC.
200 International Drive
Mt. Olive, NJ, 07828, USA.
T +1 908 852 3700 F +1 908 813 0399
www.imt-solutions.com
We make every effort to ensure our documentation is as accurate and as complete as possible. In the event that you find any errors or
omissions, please contact Customer Tech Support at (908) 852-3700, or via email a service@nucomm.com.
© Copyrighted 2011 - IMT, LLC - Mount Olive, New Jersey 07828
Revision 2.3
VSTX User Manual
This product has been approved by the following regulatory bodies at 2400 – 2483.5
MHz:
FCC (USA)
IC (Canada)
CAUTION!
RISK OF ELECTRICAL SHOCK.
DO NOT REMOVE COVERS.
 Do not remove any covers
 Refer servicing to qualified
technicians only
 Disconnect all power before
servicing
 Read and perform all
instructions carefully
 Failure to follow suggested
instructions and guidelines may
void all warranties
PRUDENCE!
RISQUE DE CHOC ÉLECTRIQUE. NE
SUPPRIMEZ PAS LES COUVERTURES.
 Ne supprimez pas les couvertures
 Voir entretien à qualifiés Techniciens
seulement.
 Déconnectez tous les pouvoir avant
l'entretien.
 Lecture et effectuer toutes les instructions
attentivement.
 Échec de suivre les lignes directrices et les
instructions proposées peut-être annuler
toutes les garanties.
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VSTX User Manual
FCC STATEMENT
This equipment (FCC ID: I4U-25VST) has been tested and found to comply with the
limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
DÉCLARATION DE FAC
Cet équipement (FCC ID: I4U-25VST) a été testé et de respecter les limites pour une
classe b dispositif numérique, conformément à la partie 15 des règles de la FCC.
FCC CAUTION/ PRUDENCE DE FAC
Any change or modification not approved by the party responsible for compliance could void the user’s authority to operate
this device.
This device requires professional installation.
For operation within 2400 – 2483.5 MHz frequency range, the maximum EIRP must be less than 36 dBm. The qualified
antenna types to be used with this device include:
dipole antenna (3dBi or 5dBi)
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device
may not cause harmful interference, and (2) this device must accept any interference received, including interference that
may cause undesired operation.
In order to maintain compliance with the FCC RF exposure guidelines, this device should be installed and operated with a
minimum distance of 20cm between the radiator, and the body of the operator and/or nearby persons.
Tout changement ou modification non approuvé par la partie responsable de la conformité pouvait annuler l'autorisation de
l'utilisateur pour l'exploitation de ce dispositif.
Ce dispositif nécessite l'installation professionnelle.
Pour l'opération au sein de la gamme de fréquences de 2400 – 2483.5 MHz, la pire maximale doit être inférieure à 36 dBm.
Les types d'antenne qualifiés pour être utilisé avec ce dispositif, citons :
Antenne dipôle faible Gain (3dBi ou 5 dBi).
Cet appareil est conforme à la partie 15 des règles de la FCC. Opération est soumis à deux conditions suivantes: (1) ce
dispositif ne peut pas causer de brouillage préjudiciable, et (2) ce dispositif doit accepter toute ingérence a reçu, y compris
le brouillage qui peut provoquer l'opération non désirée.
Afin de maintenir la conformité avec les directives d'exposition RF FCC, ce dispositif doit être installé et exploité avec une
distance minimale de 20 cm entre le radiateur et le corps de l'opérateur ou à proximité de personnes.
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VSTX User Manual
IC Notice/:IC Avis
1. Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type
and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential
radio interference to other users, the antenna type and its gain should be so chosen that the equivalent
isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut
fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour
l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain
de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité
nécessaire à l'établissement d'une communication satisfaisante.
2. This radio transmitter (IC: 9479A-25VST) has been approved by Industry Canada to operate with the
antenna types listed below with the maximum permissible gain and required antenna impedance for
each antenna type indicated. Antenna types not included in this list, having a gain greater than the
maximum gain indicated for that type, are strictly prohibited for use with this device.
Le présent émetteur radio (identifier le dispositif par son numéro de certification ou son
numéro de modèle s'il fait partie du matériel de catégorie I) a été approuvé par Industrie
Canada pour fonctionner avec les types d'antenne énumérés ci-dessous et ayant un gain
admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne
non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont
strictement interdits pour l'exploitation de l'émetteur.
Antenna Approved/Antenne approuvé
Max. Gain/Max.
Type/Type
Gain
Dipole Antennas/
dipôle antennes
5 dBi
Impedance/Impédance
50 Ω
3. This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the
following two conditions: (1) this device may not cause interference, and (2) this device must accept
any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio
exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil
ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage
radioélectrique subi, même si le brouillage est susceptible d'en compromettre le
fonctionnement.
4. In order to maintain compliance with the IC RF exposure guidelines, this device should be installed and
operated with a minimum distance of 20 cm between the radiator, and the body of the operator and/or
nearby persons.
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VSTX User Manual
Afin de maintenir la conformité avec les directives d'exposition RF IC, ce
dispositif doit être installé et exploité avec une distance minimale de 20
cm entre le radiateur et le corps de l'opérateur ou à proximité de
personnes.
FCC / IC Label Requirement
If the FCC /IC ID is not visible when the I4U-25VST / 9479A-25VST module is installed inside another OEM
device, then the outside of the OEM device into which the module is installed must also display a label referring to
the enclosed module. This exterior label can use wording such as the following: “Contains Transmitter Module
FCC ID: I4U-25VST”/ IC: 9479A-25VST” or “Contains FCC ID: I4U-25VST. / IC: 9479A-25VST” Any similar
wording that expresses the same meaning may be used.
FAC / IC Label exigence
SI LE FCC /IC ID N'EST PAS VISIBLE LORSQUE LA I4U-25VST / 9479A-25VST MODULE EST INSTALLÉ À
L'INTÉRIEUR D'UN AUTRE PÉRIPHÉRIQUE OEM, ALORS QUE L'EXTÉRIEUR DE L'APPAREIL OEM DANS LEQUEL
EST INSTALLÉ LE MODULE DOIT ÉGALEMENT AFFICHER UNE ÉTIQUETTE SE RÉFÉRANT AU MODULE CI-JOINT.
CETTE ÉTIQUETTE EXTÉRIEURE PEUT UTILISER LIBELLÉ COMME SUIT: "CONTAINS ÉMETTEUR MODULE ID
FCC: I4U-25VST" / IC: 9479A-25VST "OU" CONTAINS FCC ID: I4U-25VST. / IC: 9479A-25VST "TOUTE
FORMULATION SEMBLABLE QUI EXPRIME LE MÊME SENS PEUT-ÊTRE ÊTRE UTILISÉE.
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VSTX User Manual
Contents
Introduction ............................................................................................................................... 14
1.1
VSTX Description ...................................................................................................................... 16
2.1
VSTX Features and Benefits....................................................................................................... 16
2.1
VSTX Theory of Operation .......................................................................................................... 18
2.1
Remote Control and Firmware ................................................................................................. 21
2.1.1
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.1.7
2.1.8
2.1.9
2.1.1
2.1.2
Manual Overview........................................................................................................................... 14
VSTX Application Diagram ........................................................................................................................... 17
VSTX Block Diagram ..................................................................................................................................... 18
Power and Control Interface Connector ................................................................................................... 20
Audio and Video Input Connectors ............................................................................................................ 20
User Data Input ............................................................................................................................................ 20
MPEG4 Encoder ............................................................................................................................................ 20
Encryption ..................................................................................................................................................... 20
COFDM Modulator ........................................................................................................................................ 20
L, S, and C Band Transmitter .................................................................................................................... 21
Ultra Compact Case ..................................................................................................................................... 21
Remote Control via Serial Interface .......................................................................................................... 21
Firmware updates ........................................................................................................................................ 21
Specifications ............................................................................................................................ 24
3.1
Frequency Bands ........................................................................................................................... 24
3.2
Modulation Modes......................................................................................................................... 24
3.3
MPEG Encoder ................................................................................................................................ 25
3.4
System............................................................................................................................................... 25
3.5
Power Requirements ................................................................................................................... 25
3.6
Environmental ................................................................................................................................ 26
3.7
Physical Specifications ................................................................................................................ 26
Installation ................................................................................................................................. 28
4.1
Overview .......................................................................................................................................... 28
4.2
Identifying VSTX Physical Features and Interfaces ......................................................... 29
4.3
Physical Installation .................................................................................................................... 32
4.4
Connect External Signals (Connector Housing)................................................................. 33
4.2.1
4.2.2
Connector Housing ....................................................................................................................................... 29
Ribbon Housing ............................................................................................................................................ 31
4.4.1 Power and Control (Connector Housing) .................................................................................................. 33
IMT part # ..................................................................................................................................................................... 33
Cable Description .......................................................................................................................................................... 33
CableType ..................................................................................................................................................................... 33
7pin LEMO to bare tin strip leads ................................................................................................................................. 33
Power Input cable ......................................................................................................................................................... 33
7pin LEMO to bare tin strip leads, w/DB9 .................................................................................................................... 33
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Power Input cable (w/Control) ..................................................................................................................................... 33
4.4.2 Video Input (Connector Housing) .............................................................................................................. 35
4.4.3 Audio Input (Connector Housing) .............................................................................................................. 35
4.5
Connect External Signals (Ribbon Housing) ....................................................................... 35
4.6
Antenna Installation .................................................................................................................... 36
Operation ........................................................................................................................................ 38
5.1
Power Up the VSTX ....................................................................................................................... 38
5.2
Pre-Configure the VSTX user options .................................................................................... 38
5.3
User Interfaces .............................................................................................................................. 39
5.3.1 Button & LED Interface ............................................................................................................................... 39
5.3.2 Rotary/Key Interface ................................................................................................................................... 40
5.3.3 Ribbon Version.............................................................................................................................................. 41
5.3.3.1
PA AGC Signal ..................................................................................................................................... 42
5.3.3.2
RS232 RX UD ....................................................................................................................................... 42
5.3.3.3
RS232 Remote Control RS-232 Tx / Rx ........................................................................................... 42
5.3.3.4
USB_PWR ............................................................................................................................................. 42
5.3.3.5
USB_DP/USB_DM................................................................................................................................ 42
5.3.3.6
Composite Video ................................................................................................................................. 42
5.3.3.7
+12VDC ................................................................................................................................................ 42
5.3.3.8
Audio 1, Audio 2 Inputs ..................................................................................................................... 42
5.4
Using the VSTX to Transmit Audio and Video Signals ...................................................... 43
5.5
Using the VSTX To Transmit User Data (Ribbon version only) ..................................... 43
5.6
Using alternate/custom controllers ....................................................................................... 44
5.7
Troubleshooting............................................................................................................................. 45
5.8
Maintenance Information .......................................................................................................... 45
5.4.1
5.4.2
5.4.3
5.4.4
5.6.1
5.6.2
Serial Interface Rate, Parity, and Stop Bit Specifications ....................................................................... 44
Command and Response Packet Formats ................................................................................................ 44
Introduction ..................................................................................................................................... 8
1.1
Select User Level Settings ........................................................................................................................... 43
Put the unit in Transmit Mode .................................................................................................................... 43
Select Power Level ....................................................................................................................................... 43
Verify Operation ........................................................................................................................................... 43
Manual Overview................................................................................................................................. 8
VSTx Description ........................................................................................................................... 10
2.1
2.1.1
2.1
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.1.7
2.1.8
VSTx Features and Benefits.............................................................................................................. 10
VSTx Application Diagram ............................................................................................................................ 11
VSTx Theory of Operation ............................................................................................................... 12
VSTx Block Diagram ..................................................................................................................................... 12
Power and Control Interface Connector ......................................................................................................... 14
Audio and Video Input Connectors ................................................................................................................ 14
User Data Input............................................................................................................................................... 14
MPEG4 Encoder............................................................................................................................................. 14
Encryption ...................................................................................................................................................... 14
COFDM Modulator ........................................................................................................................................ 14
L, S, C, and X Band Transmitter .................................................................................................................... 15
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VSTX User Manual
2.1.9
2.1
2.1.1
2.1.2
Remote Control and Firmware ........................................................................................................ 15
Remote Control via Serial Interface ............................................................................................................... 15
Firmware updates ........................................................................................................................................... 15
Specifications ................................................................................................................................. 18
3.1
Frequency Bands ............................................................................................................................... 18
3.2
Modulation Modes ............................................................................................................................. 18
3.3
MPEG Encoder .................................................................................................................................. 19
3.4
System ................................................................................................................................................. 19
3.5
Power Requirements.......................................................................................................................... 19
3.6
Environmental.................................................................................................................................... 20
3.7
Physical Specifications....................................................................................................................... 20
Installation ..................................................................................................................................... 22
4.1
Overview ............................................................................................................................................. 22
4.2
Identifying VSTx Physical Features and Interfaces ....................................................................... 23
4.2.1
4.2.2
Connector Housing ......................................................................................................................................... 23
Ribbon Housing .............................................................................................................................................. 25
4.3
Physical Installation........................................................................................................................... 26
4.4
Connect External Signals (Connector Housing) ............................................................................. 27
4.4.1
4.4.2
4.4.3
Ultra Compact Case ........................................................................................................................................ 15
Power and Control (Connector Housing) ....................................................................................................... 27
Video Input (Connector Housing) .................................................................................................................. 29
Audio Input (Connector Housing) .................................................................................................................. 29
4.5
Connect External Signals (Ribbon Housing)................................................................................... 29
4.6
Antenna Installation .......................................................................................................................... 30
Operation ........................................................................................................................................ 32
5.1
Power Up the VSTx ........................................................................................................................... 32
5.2
Pre-Configure the VSTX user options ............................................................................................. 32
5.3
User Interfaces ................................................................................................................................... 33
5.3.1
Button & LED Interface ................................................................................................................................. 33
5.3.2
Rotary/Key Interface ...................................................................................................................................... 34
5.3.3
Ribbon Version ............................................................................................................................................... 35
5.3.3.1
PA AGC Signal ..................................................................................................................................... 36
5.3.3.2
RS232 RX UD ...................................................................................................................................... 36
5.3.3.3
RS232 Remote Control RS-232 Tx / Rx ............................................................................................... 36
5.3.3.4
USB_PWR ............................................................................................................................................ 36
5.3.3.5
USB_DP/USB_DM .............................................................................................................................. 36
5.3.3.6
Composite/S-Video ............................................................................................................................... 36
5.3.3.7
+12VDC ................................................................................................................................................ 36
5.3.3.8
Audio 1 With Bias ................................................................................................................................ 36
5.3.3.9
Audio 2 With Bias ................................................................................................................................ 36
5.3.3.10
Audio 1, Audio 2 Inputs ........................................................................................................................ 36
5.4
5.4.1
Using the VSTx to Transmit Audio and Video Signals .................................................................. 37
Select User Level Settings .............................................................................................................................. 37
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5.4.2
5.4.3
5.4.4
Put the unit in Transmit Mode ........................................................................................................................ 37
Select Power Level ......................................................................................................................................... 37
Verify Operation ............................................................................................................................................. 37
5.5
Using the STx To Transmit User Data............................................................................................. 37
5.6
Using alternate/custom controllers................................................................................................... 38
5.6.1
5.6.2
Serial Interface Rate, Parity, and Stop Bit Specifications .............................................................................. 38
Command and Response Packet Formats ....................................................................................................... 38
5.7
Troubleshooting ................................................................................................................................. 39
5.8
Maintenance Information ................................................................................................................. 39
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VSTX User Manual
Figures
Figure 2-1: VSTX Application ______________________________________________________________________
Figure 2-2: Nucomm VSTX Internal Block Diagram ___________________________________________________
Figure 2-3 - Encryption Circuit _____________________________________________________________________
Figure 4-1: VSTX Application With Optional Host Processor ___________________________________________
Figure 4-2: VSTx – Connector Housing (Button & LED version shown) __________________________________
Figure 4-3: VSTX – Button & LED faceplate _________________________________________________________
Figure 4-4: VSTX – Rotary/Key faceplate ____________________________________________________________
Figure 4-5: VSTx - Ribbon Housing ________________________________________________________________
Figure 4-6: VSTX Outline Drawing, Connector Housing (Dimensions in Inches) ___________________________
Figure 4-7: VSTx (Connector Housing) Power/Control Detail __________________________________________
Figure 4-8: VSTx (Connector Housing) Audio Detail __________________________________________________
Figure 5-1: VSTx – Button & LED interface __________________________________________________________
Figure 5-2: VSTX – Rotary/Key interface ____________________________________________________________
Figure 5-3: VSTx - Ribbon Version interface ________________________________________________________
18
19
20
28
29
30
30
31
32
34
35
39
40
41
Tables
Table 2-1: VSTX - Summary of High Level Features and Benefits ______________________________________
Table 4-1: VSTx (Connector Housing) Power/Control Cables __________________________________________
Table 4-2: VSTx (Connector Housing) Power/Control Pinout ___________________________________________
Table 4-3: VSTx (Connector Housing) Audio Pinout __________________________________________________
Table 4-4: Ribbon Cable Connector Cable Pin Assignments ___________________________________________
Table 5-1: Table of Troubleshooting Tips ___________________________________________________________
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33
34
35
36
45
11
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Chapter One
Introduction
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1 Introduction
This document is a user manual for IMT’s VSTX microwave video transmitter. The VSTX is a
compact transmitter that digitally encodes video signals and transmits them using COFDM
modulation over microwave frequencies using secure methods. The unit accepts Composite
video inputs in NTSC or PAL format. It has a built in MPEG4 (H.264) encoder and COFDM
modulator. The VSTX is housed in an ultra compact, lightweight enclosure that can be used
in harsh environments.
The VSTx comes in two versions, a “connectorized” version which has connectors for typical
user inputs and outputs and a user interface panel, and a “ribbon cable” version which has
no external connectors or controls.
Throughout this manual, the product is referred to as the “VSTX,” the “VSTX transmitter”, or
simply the “transmitter.”
1.1 Manual Overview
The contents of this manual are as follows:
Chapter 2 – Describes the theory of operation and the features of the VSTX.
Chapter 3 – Contains a list of the VSTX specifications. The specifications include
transmitter feature specifications, power requirements, environmental
specifications, and I/O specifications.
Chapter 4 – Explains how to install the VSTX.
Chapter 5 – Describes operating procedures for the VSTX. It also contains an overview
of the VSTX programmable serial interface.
A preface at the front of this manual contains Warranty and Repair information.
The rear of this manual contains warranty and repair information.
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Chapter Two
Description
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VSTX User Manual
2 VSTX Description
This chapter describes the VSTX transmitter theory of operation, features, and benefits. It also contains
a block diagram of the VSTX transmitter circuitry and a typical application example.
The VSTx is available in two basic versions:
 VSTx with external input connectors
 VSTx with ribbon cable interface
The VSTx with external connectors features direct plug-in compatibility with off the shelf equipment
using industry standard interfaces.
The VSTx using a ribbon cable interface is slightly smaller and is useful for space optimized solutions.
Audio and Video are input to the VSTX through the ribbon cable. A programmable user interface is
also accessed via a serial port in the ribbon cable. This can be used to pre-configure the VSTX settings
and to check the status of the VSTX settings. Power is also supplied to the VSTX through the ribbon
cable.
The VSTX internal circuitry compresses the audio and video signals, organizes the compressed data
into ISO digital video transport streams, and optionally encrypts the data. The transmitter uses
COFDM modulation and transmits at microwave frequencies in the bands supported by the unit.
Though the unit ships pre-configured, a graphical user interface that runs on a PC is available to
modify the operating parameters. Optionally, custom software written to implement the RS232
command set may be used. Refer to Chapter 5, “Operation” for more information.
IMT has the ability, should the need ever arise, to provide the user with firmware files and instructions
for local firmware installation, such as for feature upgrades, etc.
2.1 VSTX Features and Benefits
Table 2-1: VSTX - Summary of High Level Features and Benefits
Feature
Benefit
Microwave output frequencies in the L, S, C, and
C bands. X bands.
User orderable frequency band options.
L, S, C, and X C Band Transmitter Output
User programmable channels and offsets within
Frequencies
frequency ranges.
Compatible with industry standard video camera
Accepts NTSC or PAL Composite Video Inputs
outputs.
Direct audio input option for use with video
Optional Stereo Analog Audio Inputs
signals that do not contain audio.
COFDM Microwave Digital Video Transmitter
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VSTX User Manual
MPEG4 (H.264) Encoder
User Data Channel
Remote Control GUI for Programming the
VSTx
Ultra Compact Housing
Optional Ribbon I/O Cable
Industry standard video compression.
Implements latest algorithms including B frames.
Data can be transmitted along with audio and
video to the receiver on the ribbon version only.
Convenient menu and button based graphical user
interface for Windows PC’s.
Can be used to program the preset settings on the
top panel.
GUI uses VSTx RS-232 remote control serial
port.
Fits in small form factor products.
The VSTX uses a compact, flexible ribbon cable
to connect to other equipment.
2.1.1 VSTX Application Diagram
Figure 2-1 shows a typical VSTX transmitter application. The External Equipment Interface connects
to other circuits using a ribbon cable. An antenna is connected to the SMA (or RP-SMA for 25VST )
antenna output port.
The VSTX may be programmed by a host processor in the application, or it may be pre-configured and
installed in the application without programming during operation. The latter approach can save
expense in cost sensitive applications.
Commonly used configurations can be setup and stored in the VSTX memory as “preset”
configurations. Up to 16 presets can be stored. Once presets have been stored, fewer commands are
required to change between configurations.
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VSTX User Manual
Host
Processor
(For VSTx
Configuration)
Camera Circuit
Antenna
VSTx
Power
Source
Figure 2-1: VSTX Application
2.1 VSTX Theory of Operation
2.1.1 VSTX Block Diagram
Figure 2-2 is a block diagram of the VSTX internal circuitry.
Major blocks in the VSTX include:
 NTSC Composite Video Input Interface
 Stereo Audio Input Interface
 MPEG4 Video Compression Circuit
 Data Encryption Circuit
 COFDM Modulator
 Microwave Transmitter and Antenna Connector
 Programmers Serial Interface for Remote Control Purposes
 Internal Microprocessor and Memory
 USB Interface for Firmware Updates
 Power Circuitry
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VSTX User Manual
Video Input
Circuit
Audio Input
Circuit
MPEG4
Encoder
User Data
Serial Port
UI Buttons
and LED’s
Programmable
Serial Port
USB Interface
Circuit
(Ribbon only)
AES Data
Encryption
COFDM
Modulator
Microwave
Transmitter
Microprocessor
and Flash Memory
Power
Figure 2-2: IMTNucomm VSTX Internal Block Diagram
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VSTX User Manual
2.1.2 Power and Control Interface Connector
The VSTx Power and Control Interface includes power and ground connections plus two RS-232 serial
port interfaces. One of the RS-232 interfaces can be connected to a laptop or other PC to program the
transmitter configuration. The second RS-232 interface can be used to transmit user data through the
transmitter along with the audio and video streams.
2.1.3 Audio and Video Input Connectors
This VSTX model has two analog audio inputs that can be used for stereo audio and one NTSC or PAL
composite video input. Refer to Chapter 3 for specifications of these signals.
2.1.4 User Data Input
User Data is available on the ribbon version only. In the “ribbon” version aA data channel may be
transmitted along with the audio and video information. The data channel is accessed through a
separate RS-232 serial interface on the ribbon connectorin the Power/Control connector.
2.1.5 MPEG4 Encoder
The VSTX compresses the input video signal before modulation and transmission to reduce bandwidth.
The VSTX contains a built-in MPEG4 (H.264) compliant encoder for this purpose. The VSTx features
the latest compression methods utilizing B frames for more accurate encoding of compressed video
signals.
2.1.6 Encryption
The transmitter supports BCRYPT1 and BCRYPT2. BCRYPT2 is very similar to BCRYPT1 with
improvements made to support re-multiplexing. Both encryption modes support AES 128 and AES256
key lengths.
MPEG4
Encoder
AES Encryption
COFDM
Modulator
RF Output
Figure 2-3 - Encryption Circuit
2.1.7 COFDM Modulator
The COFDM modulator receives data from the output of the MPEG4 encoder through a circuit that
enhances the security of transmissions.
The VSTX is able to transmit data at high data rates and with low error rates using COFDM
modulation techniques. The data rate used by the transmitter depends upon the CODFM modulator
settings used.
Refer to Chapter 5, “Operation” for more information.
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2.1.8 L, S, and C Band, and X Band Transmitter
The VSTX microwave transmitter circuits mix the signal to the desired microwave frequency. The
signal is filtered and boosted through a low noise output amplifier.
The VSTX has a single SMA (or RP-SMA for 25VST ) style antenna connector. The output impedance
of the antenna connector is 50 ohms.
Refer to Chapter 3, “Specifications” for frequency band and channel tuning specifications.
2.1.9 Ultra Compact Case
The VSTX case is compact and can be screw mounted to other surfaces.
The VSTx contains a PCB near the lower surface of the unit. The bottom of the VSTx dissipates most
of the VSTx heat. Thus it is important to mount the VSTx in a manner which keeps the bottom surface
of the VSTx within the transmitter’s operating temperature range.
Refer to Chapter 4, “Installation,” for more information about the VSTX housing, connector pin
assignments, and antenna port.
2.1 Remote Control and Firmware
2.1.1 Remote Control via Serial Interface
An RS-232 command set is implemented to allow remote control of all configuration options, as well
as monitoring of internal status and settings. Commands and responses are sent via the RS-232 serial
interface located on the Power/Control connector.
The IMTOur “Nano Controller” GUI is available for controlling the unit via the RS-232 serial
interface. Any Windows compatible computer running Windows XP or Vista with 500 MB of memory
and 1 GHz Pentium or above can be used. Refer to Chapter 5, “Operation” for more information.
Optionally, users can create custom control interfaces as required to suit their applications. The RS-232
command set, or “remote protocol”, is available upon request for this purpose.
2.1.2 Firmware updates
The unit firmware may be updated via the USB interface on the Power/Control connector, using the
Nucommour NanoTx Programmer software. A programming cable (IMT part number 922-B96301A-R, or equivalent) is required. Contact IMT Tech Support for additional details.
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Chapter Three
Specifications
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3 Specifications
3.1 Frequency Bands
Base Part
Number
Frequency
(GHz)
RF
Power
(dBm)
DC Power
(W)
13VST-13
1.200-1.400
13
13VST-20
1.200-1.400
20
23VST-13
2.200-2.400
13
64
23VST-20
2.200-2.400
20
25VST-13
2.400-2.500
20
47VST-13
4.400-5.000
13
65
47VST-20
4.400-5.000
20
47VST-23
4.400-5.000
23
(Other bands may be available. Contact IMT)
Tuning step size: ........................................... 1MHz step size
Frequency stability: ...................................... ± 10ppm
Transmit Modes:
Standby: ........................................................ No RF output
Normal: ......................................................... Instantly on frequency transmission
3.2 Modulation Modes
Modulation 1
Modulation Formats: .......................................... COFDM (DVB-T)
Carriers: .............................................................. 2K
Constellation: ...................................................... QPSK, 16QAM
Code Rate: .......................................................... 1/2, 2/3, 3/4, 5/6, 7/8
Guard Interval: .................................................... 1/32, 1/16, 1/8, 1/4
Bandwidth: .......................................................... 6 MHz, 7 MHz, and 8 MHz
Modulation 2 (Optional)
Modulation Formats: .......................................... COFDM (Proprietary)
Carriers: .............................................................. 2K
Constellation: ....................................................... QPSK
Code Rate: .......................................................... 1/2, 3/4
Guard Interval: .................................................... 1/32
Bandwidth: .......................................................... 1.25MHz, 2.5MHz
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(Other modulations available per user requirements)
3.3 MPEG Encoder
Method: ..................................................................... MPEG-4 Part 10/H.264
Video
Video Coding: ...................................................... AVC
Video Input: ......................................................... Composite
NTSC: ......................................... 720 x 480(4:2:0)
PAL: ............................................ 720 x 576(4:2:0)
Audio
Audio Coding: ................................................... ISO/IEC 11172-3(Layer II)
Audio Sample Rate: ............................................. 48Khz
Audio Channels: ................................................. 1 Stereo, 2Mono Standard,
Audio Input: ........................................................ Line, Gain selectable
............................................................................. Mic, Gain selectable
............................................................................. Phantom power or external bias.
Tone: .................................................................... -10dBfs/8dBm
............................................................................. Level Adjustable -10 to-26dBfs
3.4 System
Video Present: ......................................................... Remote Standby or Test Generator
Test Generator (Dynamic): .................................... SMPTE CB(NTSC)/100%
................................................................................ CB(PAL)
.................................................................... 16 Character ID (Matches SDT Service name).
.................................................................... 1KHz Tone/Pulse
Encryption (optional): ............................................. AES Block Cypher, supporting key size of 128
and 256bit (FIPS PUB 197)
User Data (: Ribbon Version only): ....................... RS232 Side channel, 300-115K Baud
Remote Control: ..................................................... Remote RS232
Local Control: ....................................................... See Figure 1: Local Control Panels
Presets:
........................................................... 16 user configurable presets withthrough windows
GUI.
3.5 Power Requirements
Input range: ............................................................ DC: +9 to +18
Power consumption: .............................................. See table above
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3.6 Environmental
Item
Specification
Temperature Range,
Operational, Bottom Surface
Temperature Range, Storage
Humidity
Altitude, Operating
Altitude, Storage
–10° to +65°C (Base plate temperature. The bottom surface of the
VSTX must be maintained within the temperature range listed here.)
–40° to +80°C
0% to 95% RH, non-condensing
0 to 20,000ft (6,000 m) Maximum
0 to 50,000ft (15,000 m) Maximum
3.7 Physical Specifications
Size (Flex version): ................................................... 2.1" x 0.3” x 1.6”
Weight: ..................................................................... 26.3g
Size (Connector version): ......................................... 2.1" x 0.48” x 1.95”
Weight: ...................................................................... 45.4g
(Sizes do not include connectors)
Connector Part Numbers:
7 pin Lemo (on TX) ................................................... ECG.0B.307.CLN
IMT PN .......................................................... 512-F3022-007-R
7 pin Lemo (mating) .................................................. FGG.0B.307.CLAD52
IMT PN .......................................................... 512-F3022-007-R
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Chapter Four
Installation
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4 Installation
This chapter contains steps for installing the VSTx transmitter in typical environments where it may be
used.
______________________________________________________________
! WARNING – DO NOT OPEN THE VSTX
The VSTX contains no user serviceable parts. Do not open the VSTX
housing. Failure to comply will result in voiding of the VSTX warranty.
______________________________________________________________
4.1 Overview
The VSTX is used in compact systems that typically contain a camera and power supply. VSTX
applications may also contain a host processor that is used in the field to re-configure settings in the
VSTX.
Host
Processor
(For Nano Tx
Configuration)
Antenna
Camera Circuit
VSTx
Power
Source
Figure 4-1: VSTX Application With Optional Host Processor
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4.2 Identifying VSTX Physical Features and Interfaces
The VSTx will have either a Connector or Ribbon style housing. The Connector style unit will have
either a Button & LED faceplate, or a Rotary/Key, or a Blank faceplate.
4.2.1 Connector Housing
Video Input
Audio 1 & Audio 2 inputs
RF Output /Antenna Port
Power and RS-232 Interface
Faceplate User Interface
Mounting Screw Holes
Figure 4-2: VSTx – Connector Housing (Button & LED version shown)
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Figure 4-3: VSTX – Button & LED faceplate
Figure 4-4: VSTX – Rotary/Key faceplate
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4.2.2 Ribbon Housing
Screw Holes for Mounting
VSTX Top Surface
Ribbon Cable
Antenna Port
Ribbon Cable Connector;
Arrow points to Pin 1. (26 pins total)
Figure 4-5: VSTx - Ribbon Housing
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4.3 Physical Installation
Note: The VSTX is configured via the programmable serial interface. Should you desire to program the
unit while in your application, then you r application design must provide a means to connect to the
serial interface. If your application cannot support a means to connect to the serial interface, then you
must pre-configure the unit prior to installation. Refer to Section 5.
The VSTX can be mounted using the four screw holes located on the corners of the housing, using four
#2-56 screws. Tighten the four screws gradually in rotation, without applying excess force on one
before starting the others.
The STx requires installation using proper thermal dissipation methods. During operation, energy is
dissipated to the outside environment, especially on the lower surface of the unit.
The bottom surface of the VSTx must be kept at a temperature within the operating temperature range
specified in Chapter 3.
The unit has an internal fan and the fan openings must not be blocked.
The unit should not be operated inside another enclosure unless sufficient cooling is provided that the
case temperature is within the range specified in Chapter 3.
Figure 4-6: VSTX Outline Drawing, Connector Housing (Dimensions in Inches)
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4.4 Connect External Signals (Connector Housing)
The VSTX connectors include the following major interfaces:
 Power and Ground Plus RS-232 programming interface
 Video Input Connector Accepts Composite Video
 Analog Audio 1 and 2 Line Inputs
4.4.1 Power and Control (Connector Housing)
IMT has pre-made cables available that support Power and/or RS232 Control. The power portion of
the IMT cable has two bare tin leads for connection to an appropriate power source. The control
portion of the IMT cable is terminated on a 9-pin D connector.
Connect an appropriate DC power source to the Power/Control connector. The power source
requirements are listed in Chapter 3, Specifications.
The Power/Control connector also includes an RS-232 interface for connection to a PC or host
processor for programming the VSTx. A cable that supports both power and control is required in
order to program or pre-configure the unit. Spare cables are available from IMT.
Table 4-1: VSTx (Connector Housing) Power/Control Cables
IMT part #
Cable Description
7pin LEMO to bare tin strip leads
7pin LEMO to bare tin strip leads, w/DB9
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Table 4-2: VSTx (Connector Housing) Power/Control Pinout
Pin
Function
+12VDC
RS232 RX
USB DM
USB DP
RS232 TX
USB POWER
GROUND
Notes
Not Active
Figure 4-7: VSTx (Connector Housing) Power/Control Detail
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4.4.2 Video Input (Connector Housing)
Connect a Composite video source to the video input.
4.4.3 Audio Input (Connector Housing)
Connect audio sources to the two analog audio line inputs.
Table 4-3: VSTx (Connector Housing) Audio Pinout
Pin
Function
Notes
LINE SELECT
Not Active
+5V MIC BIAS
AUDIO IN
Audio line input.
GROUND
Connected internally to signal & chassis ground
Figure 4-8: VSTx (Connector Housing) Audio Detail
4.5 Connect External Signals (Ribbon Housing)
For best grounding, the VSTX ribbon cable should be connected to an interface that terminates all the
signals. (Do not attempt to split the cable or use multiple connectors on the end of the ribbon).
To terminate the VSTX ribbon cable, you may use an interface board which is available from IMT, or
the following connector: Hirose Electronics Model Number FH33-26s-0.6sh(10)
When planning your system grounding scheme, provide both power and ground to the VSTX ribbon
cable from a PCB mounted connector. Follow appropriate grounding methods in your system to
facilitate good EMC, including use of a single point of origin for grounds.
See Section 5 “Operation” for additional detail on the ribbon cable pins and their usage.
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Table 4-4: Ribbon Cable Connector Cable Pin Assignments
Pin on
IMT provided
Pin #
Interface Board
(Z036/Z042/etc)
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Signal Name
Direction
GND
PA AGC
n/aGPI 1
n/aGPI 2
RS232 RX UD
RS232 TX UD
RS232 RX_RC
RS232 TX RC
GND
n/aUSB_PWR
USB_DP
USB_DM
GND
n/aAUDIO1 W/ Bias
n/aAUDIO2 W/ Bias
AUDIO1
AUDIO2
GND
CHROMAn/a
COMPOSITE /S-Video
GND
n/aNC
n/aNC
GND
+12VDC
+12VDC
In
In
In
In
In
Out
In
Out
In
In
In/Out
In/Out
In/Out
In/Out
In
In
Description
PA AGC input for external PA (0 to 3.3VDC)
General Purpose Inputs
General Purpose Inputs
RS232 User data
RS232 User data
RS232 Remote control
RS232 Remote control
USB Interface
Audio 1 single ended with Mic Bias.
Audio 2 single ended with Mic Bias.
Audio 1 Single ended.
Audio 2 Single ended.
In
In
Chroma input for S-video.
Composite video / S-video Luminance
In
In
Power Input +9 to + 18 V
Power Input +9 to + 18 V
4.6 Antenna Installation
Connect a suitable antenna directly to the SMA (RP-SMA for 25VST) antenna connector, or via a
suitable 50 ohm cable.
Before applying power: Ensure proper antenna termination on RF output.
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Chapter Five
Operation
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5 Operation
While this chapter contains basic information about the operation of the VSTx transmitter, the
programming of the unit (including preset configuration) via the Nano Controller GUI is not covered.
Please refer to the “Nano Controller” manual (IMT Publication: M27-0001-00A) for detailed
information on how to program and configure the unit.
In this section you will find info on how to use the transmitter to transmit video, audio, and user data.
At the end of the chapter you will find troubleshooting and maintenance information.
5.1 Power Up the VSTX
Before applying power: Ensure proper antenna termination on RF output connector.
Before applying power: Ensure that the VSTX installation includes an appropriate heat sink.
Refer to the thermal specifications in Chapter 3, “Specifications.” The VSTX must be mounted
using appropriate methods to ensure that the bottom surface of the unit is kept within the
operating temperature specifications at all times.
Turn on the power to the overall system.
Note: The VSTX requires up to 20 seconds to complete its internal power up sequence.
Supply current will jump up in steps as internal circuits are powered. The final DC
supply current will settle after 20 seconds.
5.2 Pre-Configure the VSTX user options
The VSTX has a wide range of programmable settings. Before using the VSTX in your application,
you should pre-configure it to for the settings you want to use in your application. Settings are
selected and configured using the Nano Controller software, or a third party alternative. Please refer to
the Nano Controller documentation for details, or contact IMT Technical Support.
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5.3 User Interfaces
The VSTx will have either a Connector or Ribbon style housing. The Connector style unit will have
either a Button & LED faceplate, or a Rotary/Key, or a Blank faceplate. The user interfaces for the
various types are described below.
5.3.1 Button & LED Interface
This interface allows the user to select presets and view basic unit status without requiring a remote
control. Any changes made remotely will also be reflected on the front panel. The interface consists
of a “Set” button, and 16 LED’s which are used to display status.
The “Set” button is used to scroll through the unit presets, from 1-16. The LED’s will indicate which
preset is currently selected. The unit will begin to implement the selected preset five seconds after the
last button push. The appropriate LED will blink Red as the changes are made, and then go to solid
green when the reconfiguration process has been completed.
If a preset change is requested through the remote control port. the LED changes to the new preset
number and blinks yellow while the preset is configured. Once complete it turns a steady green.
In addition to indicating the selected preset, LED’s 5, 6 and 13-16 are also used to display alarm and
status information. These LED’s will display solid Red when indicating status information only, or
alternating Red/Green when indicating both preset and status.
SET Button
Preset Numbers
Error Indicators
Status Indicators
Figure 5-1: VSTx – Button & LED interface
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5.3.2 Rotary/Key Interface
This interface allows the user to select presets without requiring a remote control. Changes made
remotely will NOT be reflected on the front panel. The interface consists of a 16 position rotary
switch.
The switch is used to advance through the unit presets, from 1-16. The unit will begin to implement
the selected preset after the switch has been idle for 5 seconds. The rotary interface unit will always
boot up on the physical preset it is set to.
Preset Selection Key
Preset Numbers
Figure 5-2: VSTX – Rotary/Key interface
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5.3.3 Ribbon Version
This interface provides no local control or indications. Changes made remotely will NOT be reflected
on the unit. The interface consists of a 26 pin ribbon cable. See Section 4 “Installation” for pin
assignments.
Ribbon Cable Connector;
Arrow points to Pin 1. (26 pins total)
Ribbon Cable
Figure 5-3: VSTx - Ribbon Version interface
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5.3.3.1 PA AGC Signal
Controls the VSTx RF output level when an external PA is used. The input range is 0 to 3.3VDC.
5.3.3.2 RS232 RX UD
This is a RS232 input used to transport RS232 data through the RF link. This signal receives data at a
user defined baud rate and encapsulates this data into the MPEG Transport stream. RS232 Tx UD
5.3.3.3 RS232 Remote Control RS-232 Tx / Rx
This is the RS232 remote control interface. The Tx line is the output from the unit and the Rx is the
input. The baud rate of this interface is user programmable.
5.3.3.4 USB_PWR
This is an input to the VSTx. It is used to signal the system to enter download mode.
5.3.3.5 USB_DP/USB_DM
+/- USB signal
5.3.3.6 Composite Video/S-Video
The unit activates these inputs based on the video input selection made by the user, either Composite
Video or S-Video. Composite is terminated to ground with a 75Ω resistor.
5.3.3.7 +12VDC
Main power input.
5.3.3.8 Audio 1 With Bias
In Mode 1, this is an audio input with +3.3VDC output.
In Mode 2, this is a simple +3.3VDC bias output.
5.3.3.9 Audio 2 With Bias
In Mode 1, this is an audio input with +3.3VDC output.
In Mode 2, this is a simple +3.3VDC bias output.
5.3.3.105.3.3.8 Audio 1, Audio 2 Inputs
There are two audio modes, Mode 1 & Mode 2. In Mode 1, Audio 1 and Audio 2 are two single ended
audio input signals. In Mode 2 (differential mode), Audio 1 is the positive terminal and Audio 2 is the
negative terminal. Note that in differential mode the audio encoder is placed in mono mode.
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5.4 Using the VSTX to Transmit Audio and Video Signals
The VSTX uses a COFDM modulation scheme. Receiver systems used with the VSTX must be
compatible and capable of receiving the type of video transport streams transmitted by the VSTX.
Compatible receivers include the IMT VSRx receivers and certain other IMT products. Contact IMT
for more information.
5.4.1 Select User Level Settings
By use of the available interface(s), make appropriate settings so that your transmitter and suitable
receiver are on the same RF and modulation settings.
5.4.2 Put the unit in Transmit Mode
Via the Remote Control, place the unit in to TX mode
NOTE: When no video signal is present, the unit enters “Standby Mode.” When a video signal is
present, the unit automatically exits “Standby Mode” and resumes transmission. Depending on unit
type, Standby mode status may be indicated by a front panel LED.
5.4.3 Select Power Level
Use the remote control to select the power level desired (HI / LOW). In HI mode, the unit will output
its full rated power. In LOW mode, the output will be approximately 6dB down from the HIGH
power output.
5.4.4 Verify Operation
Verify unit operation by one of the following methods:
(1) If your system contains a host processor capable of communicating with the unit via the serial
interface, use interrogation commands to check the status of the unit.
(2) Detect the transmitted signal using a spectrum analyzer.
(3) Using an appropriate receiver, verify that you are receiving audio and video from your
application setup.
5.5 Using the VSTX To Transmit User Data (Ribbon version only)
The User Data Interface can be used to packetize user data along with the main audio and video
information. The User Data can be received and output by compatible IMT receivers. The user data
interface must be programmed using the serial interface.
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5.6 Using alternate/custom controllers
The implementation of an RS-232 command set, or Remote Protocol, allows the use of customized
interfaces to perform virtually all unit operations, including:
 Configure Settings
 Query Status
The Remote Protocol consists of command and response messages, or packets. The internal CPU
handles interpretation of the packets to set unit parameters, and provide responses back through the
serial interface.
In addition to IMT’s Nano Controller, alternate control interfaces may be developed, or available from
third parties. Additionally, commands and responses may be entered and viewed manually using a
command terminal.
The Remote Protocol is available upon request from IMT.
5.6.1 Serial Interface Rate, Parity, and Stop Bit Specifications
Refer to the Remote Protocol for information about the baud rate, number of data bits, stop bits, and
flow control methods.
5.6.2 Command and Response Packet Formats
This section provides a brief introduction to the serial interface command and response packet formats.
The command packets use the following format:
NU  <##>

Where the fields are ASCII and are defined as follows:
NU
Literal
 Address of target (0x01 – 0xFF)
 Address of source (0x00 – 0xFF)
<##> Packet Length (Packet Length = Command Length + Data Length)
 Command (0x00-0xFF) – Different values are used for each command.
 Data (Hex Format) – Data values are encoded with a variety of meanings.
 (1’s complement of  to end of data)
 Carriage Return
 Line Feed
After a command packet is received, the unit returns a response packet. Response packets have the
same basic format as command packets, except that the source and destination are reversed, and the
command field specifies the type of response being sent.
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5.7 Troubleshooting
Table 5-1: Table of Troubleshooting Tips
Problem
Possible Explanations
No Power
Check power source
Camera Malfunction
Try a different camera
Possible Receiver system issue
Verify that all modulation type
and encryption/decryption
parameters match at transmitter
and receiver.
No video
Video Signal Reception Poor
VSTX Programmable Serial
Interface Does Not Respond
Actions to Take
Receiver not properly positioned Try improved location
No Power
Check power source
Poor connection via ribbon
cable
Check connections
Host processor GUI settings
issues
Verify that the host processor
running a GUI interface for
programming the VSTX is setup
and operating correctly.
5.8 Maintenance Information
Follow these procedures when maintaining the device:
 Dry the device immediately if it comes into contact with water or other liquids. Warranty does
not cover liquid damage.
 Do not submerge the device or use it directly in rain.
 Use ESD Precautions whenever handling the device
 Do not touch electrical connections.
 Do not open the device. This voids the warranty.
 Keep the device clean by wiping with a soft, dry cloth. If necessary, dampen only using a
solution suitable for cleaning electronic devices. Warranty does not cover cleaning damage.
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Proprietary Information and Disclaimer Notice
All information and graphic images contained within this manual are the sole property of IMT, LLC,
and are issued in the strictest of confidence. This material may not be reproduced, stored, copied, or
converted in any form, nor shall it be disclosed to others or used for manufacturing or any other
purpose without the written permission of authorized IMT personnel.
IMT has made every effort to ensure the accuracy of this material at the time of printing. However, as the
specifications, equipment, and this manual are subject to change without notice, IMT assumes no responsibility
or liability whatsoever for any errors or inaccuracies that may appear in this manual, or for any decisions based
on its use. This manual is supplied for informational purposes only and should not be construed as a
commitment by IMT.
Warranty
Equipment manufactured by IMT, LLC is warranted to meet all published specifications and to be free
from defects in material and workmanship within a period of two years from date of original shipment.
The company’s liability under this warranty is limited to:


Servicing or adjusting equipment.
Replacement of defective parts.
Any equipment returned to the factory shall have the freight paid for by the buyer.
Equipment showing damage by misuse, abnormal conditions of operation, or attempts to repair by
other than authorized service personnel shall be excluded from this warranty. IMT shall in no event
be responsible for incidental injury or property damage. Since IMT has no control over conditions of
use, no warranty is made or implied as to suitability for the customer’s intended use, beyond such
performance specifications as are made part of the purchase order. There are no warranties
expressed or implied, except as stated herein. This limitation on warranties shall not be modified by
verbal representations.
Shipping Damage
Equipment shipped FOB IMT shall become the property of buyer upon delivery and receipt from carrier. Any
damage in shipment should be handled by the buyer directly with the carrier. Immediately request the carrier’s
inspection upon evidence of damage in shipment.
Field Service
IMT products are designed with easy access to components to facilitate service. However, some modules
cannot be service in the field. To prevent voiding of the warranty, please contact Tech Support before servicing
or making any repairs. The user is cautioned to read all module descriptions in this manual. Warnings are
included in the circuit descriptions and on certain modules themselves.
Replacement Modules
Troubleshooting to the component level is often not cost-effective and frequently impossible. Often the
practical method of effecting repairs is to substitute known good spare modules for suspect units. Replacement
modules for our standard product line are usually available.
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Technical Support Information
Technical Support personnel are available to extend technical assistance to customers while installing,
operating, or troubleshooting IMT equipment. Please have your model number and serial number available.
Telephone
During IMT business hours, 8:30am - 5:30pm EST (-5 Hours, GMT), call:
US ........................................................... 908-852-3700
International ............................................ 001-1-908-852-3700
After hours, call:
US or International .................................. 888-531-3892
Email
Email address ....................................................... service@nucomm.com
Internet
Web address ......................................................... www.imt-solutions.com
Equipment Returns
If equipment cannot be successfully restored through telephone consultation, return to the factory may be
required. Loaner items may be available until the repaired items are returned.
For out-of-warranty equipment only: We evaluate all returned units, and then confers with the client on
corrective action. If no fault is found, or no corrective action is authorized, a diagnostic fee may be charged.
Prior to returning products to the factory, please obtain a return material authorization (RMA) number and
shipping instructions from Tech Support.
When returning equipment, it is very helpful to enclose a note containing the following:

RMA number.

Serial number.

A detailed description of the problem.

Name of an engineer or technician we may contact regarding problems encountered.

A “ship to” and “bill to” address.
Ship all returns to:
IMT, LLC
Attn: RMA# (your RMA number)
200 International Drive
Mt. Olive, NJ, 07828, USA
(908) 852-3700
For International returns:
In addition to the instructions above, when shipping internationally we recommend the use of a courier such as
Federal Express, UPS, etc, and that the goods be shipped DOOR-TO-DOOR PRE-PAID. This will reduce
Customs costs, handling charges and delays. Enclose all the information above, plus a statement that the
equipment was manufactured in the United States (the latter is needed to expedite customs processing).
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VSTX User Manual
Revision 2.3
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VSTX User Manual
IMT, LLC.
200 International Drive
Mt. Olive, NJ, 07828, USA.
T +1 908 852 3700 F +1 908 813 0399
www.imt-solutions.com
Revision 2.3
50

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Create Date                     : 2012:01:26 11:20:47-05:00
Modify Date                     : 2012:01:26 11:20:47-05:00
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