Kramer Electronics FC-10 - Manual (Page 17)

Kramer Electronics Ltd.
14
9.5 Audio Level Control (FC-4208 only)
A balanced audio signal is made of two antiphase signals, traveling on two wires (sometimes
with a third - a ground reference / shield wire). A balanced signal achieves better signal-to-noise
ratio, and is more immune to noise and interference. On the receiving end there is a differential
amplifier, which amplifies only the difference between the antiphase signals, thus canceling noise
which is picked up along the way and which is common mode. The balanced system is usually
used either when very low signals are to be transmitted over long distances (such as those
generated from high quality microphones) or at broadcast audio studios, for highest quality signal
recreation. To control the balanced/unbalanced signal, gently adjust the Level control knobs until
a satisfactory audio level is achieved.
10
TYPICAL APPLICATIONS
10.1 Interfacing Between Two Video Formats
The FC-10 can be used for simultaneous bi-directional conversion from composite video to YC
and from YC to composite for studio applications as shown in Figure 8. In such a setup, YC
signals can be monitored on a composite video monitor! Perform the following steps (as
necessary):
1. Connect a composite video source to the CV IN connector of the FC-10.
2. Connect an YC acceptor to the YC OUT connector of the FC-10.
3. Connect an YC video source to the YC IN connector of the FC-10.
4. Connect a composite video acceptor to the YC OUT connector of the FC-10.
5. Connect the FC-10 to an appropriate 12VDC power supply, with proper polarity.
6. Operate sources, acceptors and the FC-10. Press one of the control switches to select PAL or
NTSC mode of operation.
NOTE
The machine cannot convert composite PAL to Y/C in
NTSC. Encoding and decoding is performed only
within the same standard.
Figure 8: Interfacing Between Two Video Formats