Standard 907 Multiplexer Motherboard; Figure 3-2: Standard Model 907 Multiplexer Motherboard With Wdm; Figure 3-3: On Board I/O Channels For 907-R And 907-C Multiplexer Motherboard Cards - Focal 907 User Manual

907-0601-00 Rev. C
3.1

Standard 907 Multiplexer Motherboard

The 907 motherboard multiplexes three unidirectional (typically remote to console) video channels, and six
bidirectional serial data channels (four RS-232 and two high-speed RS-485/422). Each video channel
provides 5.5 MHz bandwidth for NTSC and PAL composite signals, S-video (Y/C), and RGB formats.
Typically all three video channels are set for 8-bit video resolution, but they can be switch configured for two
10-bit channels. Refer to the configuration drawing 907-2001-00 for details.
Each of the two RS-422/RS-485 data channels support NRZ rates up to 2.5 Mbaud, and each of the four RS-
232 channels support up to 120 Kbaud. The RS-422/RS-485 channels 5 and 6 can be configured for simplex
or duplex communication, and the user can enable autosense on these channels for RS-485 traffic.
In addition, these two channels, which are default configured for RS-485 with autosense, can be configured
instead for TTL formatted data or a configuration suitable for AC-coupled RS-485, such as used by a Kraft
manipulator telemetry links.
Figure 3-2 shows a standard Model 907 multiplexer motherboard with an external wavelength division
multiplexer (WDM) and Figure 3-3 shows the input/output (I/O) channels for the standard Model 907-R and
907-C multiplexer cards.

Figure 3-2: Standard Model 907 Multiplexer Motherboard with WDM

DATA
CH6 RS-485/422
CONN
CH5 RS-485/422/TTL
DATA
CH4 RS-232
CONN
CH3 RS-232
DATA
CH2 RS-232
CONN
CH1 RS-232
CH3 VIDEO IN
CH2 VIDEO IN
CH1 VIDEO IN

Figure 3-3: On board I/O Channels for 907-R and 907-C Multiplexer Motherboard Cards

Focal Technologies Corp.
C
B
REMOTE
(907-R)
A
OPTICAL CABLE SYSTEM
Model 907 Video/Data Multiplexer – User's Guide
CONSOLE
(907-C)
VIDEO OUT CH1
VIDEO OUT CH2
VIDEO OUT CH3
DATA
RS-232 CH1
CONN
RS-232 CH2
A
DATA
RS-232 CH3
CONN
RS-232 CH4
B
DATA
RS-485/422/TTL CH5
CONN
RS-485/422 CH6
C
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