Technical Description of TANDBERG 8000 with software version E3/B8
D12008 Rev. 11
31
Network delay (and Delay difference)
will vary depending on the different service providers
involved in the call.
Decoding delay
is typically 1/3 of the encoding delay.
4.3
Data Interface/Application Programmable Interface (API)
Data
Standards
T.120
Data
Communication
Protocol
Data
TANDBERG Dynamic Data Channel (DDC)
Modem
Standard
modem
commands
Auto/VISCA
For control of camera connected to data port 2
Data Interfaces
2 x Data ports, RS-232 (9-pin D-sub), Up to 38400 Baud for Data & Control
The dataports on TANDBERG 8000 are implemented as Digital Circuit Terminating Equipment
(DCE).
The pin-outs for both data ports are the same except pin no. 4, see note below. The connectors
used are female 9-pin D-subs.
•
The TANDBERG main camera is normally connected to Dataport 2
•
On Data port 2, pin number 4 provides 12V DC / 1 Amps to the main camera
•
The device for activation of the plasma monitor’s
Screen Saver
and
the Intelligent XGA<->S-Video
switching
should be connected to Data port 1 (See also Ch. 4.4.5).
Signal Name
Direction
Pin number
Carrier detect, CD
From DCE
1
Receive data, RXD
From DCE
2
Transmit data, TXD
To DCE
3
Data terminal ready, DTR
From DCE
4
Signal ground, GND
5
Data set ready, DSR
From DCE
6
Ready to send, RTS
To DCE
7
Clear to send, CTS
From DCE
8
Ring indicator, RI
From DCE
9
