Kramer Electronics, Ltd.
5
5.2 Getting to Know Your VM-9YC Amplifier
The KRAMER
VM-9YC
Y/C Line amplifier is a high quality amplifier which compensates for Y (Luma) and C
(Chroma) signal losses when long cables are used. In any video setup requiring considerable distances between
video source and acceptors, signal loss and thus depreciation in the quality of picture-becomes a real problem.
The
VM-9YC
allows the user to compensate for cable losses by changing the level of the Y signal and its
frequency response, as well as and the level of the C signal and its phase. The machine has a looping input with
termination switch and two outputs, thus serving as a cascadable 1:2 distribution amplifier. Signal bandwidth of
well over 320MHz makes the
VM-9YC
suitable for the most demanding applications. It is housed in a half 19"
enclosure; so two machines of that size may be installed together side by side occupying only 1U in a 19” rack.
Front/Rear panel features of the
VM-9YC
are described in Figure 2 and Table 2.
NOTE
For operation instructions refer to section 9.
Figure 2: VM-9YC Front/Rear Panel Features
Table 2: VM-9YC Front/Rear Panel Features
No.
Feature
Function
1.
Illuminated
POWER
Switch
Supplies power to the unit.
2.
C GAIN
knob
Controls C (Chroma)
l
evel of the outputs.
3.
C PHASE
knob
Controls the phase of the C (Chroma) output signal.
4.
Y EQ.
knob
Controls cable equalization of the "
Y"
outputs.
5.
Y GAIN
knob
Controls (Luma) level of the "
Y"
output.
6.
INPUT
4P connector
s-Video input (YC)
7.
TERM
pushbutton
Selects "
75
ohm" or "
Hi-Z"
impedance (for looping select
Hi-Z
).
8.
LOOP
4P connector
Provides video looping capability to increase number of outputs.
9.
OUT 1
4P connector
Y/C amplified and buffered video output.
10.
OUT 2 Y
BNC
connector
Amplified and buffered
Y
video output.
11.
OUT 2
C
BNC
connector
Amplified and buffered
C
video output.
12.
Power Connector
A 3-prong AC connector allows power to be supplied to the unit.
Directly underneath this connector, a fuse holder houses the
appropriate fuse.
