3257 HD
Series User’s Manual No: UM
-3257-D2
Page 12
www.maxcomcorp.com
3.8
External 4.5Mhz Audio Sub-Carrier
The 3257 Series also includes an option for transmitting video, audio and a 4.5Mhz audio sub-
carrier as an external signal. The figure below depicts the 3257 set up with video, 4 channels
of baseband audio and an external audio sub-carrier channel. The audio sub-carrier channel
uses a BNC connector with 75 ohm impedance.
+ I + I
G
G
1
2
+ I + I
G
G
3
4
Audio
Video
Audio SC
Video I/O
BNC
75 Ohm
Baseband Audio I/O
External Audio Sub-Carrier I/O
BNC Connector
75 Ohm
