NETmc Marine videoTXT User manual

USER GUIDE FOR
NETmc MARINE
videoTXT
Rev 7. Firmware version 5.00
January 2008
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Contents
Section Description Page
1 Introduction 3
2 Rear Connections 4
3 Serial Command Index 5
4 Keyboard Command Index 7
5 Menu Structure 10
- Time and Date 11
- Text Size 14
- Text Shade 15
- Channel Title Settings 17
- Serial Text Offset Settings 19
- GPS Data Input Settings 20
6 Overlay Manager 22
7 Troubleshooting 23
NETmc Marine Ltd
Dunann Cottage, New Deer, Turriff, Aberdeenshire
AB53 6TN
Scotland
TEL. [phone]
FAX. [phone]
EMAIL. [email protected]
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1 Introduction
NETmc Marine’s videoTXT is a robust solid state overlay unit – capable of overlaying text
onto PAL or NTSC video signals. The videoTXT will detect which type of signal is present
automatically. Note that if no signal is detected, the videoTXT will default to PAL settings.
Housed in a 1U rack mount case – the videoTXT is capable of placing text on up to 3
separate unsynchronised video signals. Data can be input via PS2 keyboard or either of the
dual serial ports.
Up to 1656 characters* can be displayed on the screen in 4 selectable font sizes and 9
selectable font shades. (*small font 1656 PAL, 1380 NTSC)
The videoTXT has an internal real time clock (RTC) – which allows time and date to be
displayed on the screen without being fed from an external source.
The firmware can be updated in situ via serial port 2. Please contact NETmc Marine Support
for more details.
Available models / options:
Single Video channel unit
Dual Video channel unit
Triple Video channel unit
Upon powering-up the videoTXT the following screen is displayed, confirming which model is
present (single, dual or triple channel) and which firmware version the unit is using.
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2. Rear connections
No matter which model has been purchased, the back panel will always be populated with 3
sets of BNC connectors. This enables easier upgrading of the unit. Looking at the rear of
the unit - the 3 sets of video inputs and outs can be clearly identified:
External data feeds from a navigation or inspection package (e.g. NaviPac / Coabis) can be
connected to Serial 1 or Serial 2. The serial inputs are 100% independent – so a “clear
screen” command sent on Serial 2 will not delete any text being fed from Serial 1.
NOTE: The keyboard and internal clock output to the same overlay layer as Serial 2:
therefore if the keyboard and/or internal clock are to be used, avoid any external inputs to
Serial 2.
When making a cable to link between videoTXT and a PC – this should be a cross over (null
modem) configured as:
PC videoTXT
2 3
3 2
5 5
Data should be sent to the videoTXT as:
9600 Baud
8 bit
No parity
1 stop bit
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3 Serial Command Index - for input via the serial port.
The videoTXT command structure follows the established industry standards. A summary of
the commands follows:
Compatibility with Taylor Lann / C-Systems
Function Hex Code Dec Code Key Code
Clear Screen 10 16 ^P
Cursor Right 11 17 ^Q
Cursor Up 12 18 ^R
Cursor Down 13 19 ^S
Cursor Left 14 20 ^T
Home Cursor 15 21 ^U
Line Feed 0A 10 ^J
Carriage return 0D 13 ^M
Where different channels are in use:
- The default setting is: All channels on.
- To send to channel 1 only: Send 07 followed by 01.
- To send to channel 1 and 2 only: Send 07 followed by 03.
- To send to channels 1, 2 and 3: Send 07 followed by 07.
- To send to channel 1 and 3 only: Send 07 followed by 05.
- To send to channel 2 and 3 only: Send 07 followed by 06.
- To disable all channels: Send 07 followed by 00.
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