Schoeps VMS 5 U, User Manual

Page: 10 / 24

10. Connecting the outputs
For A/B, X/Y or ORTF recordings the
task of the VMS 5 U is to amplify and
filter the signals presented to its inputs,
and to deliver the result to the outputs
<17>. For this purpose the "Output"
switch (<7> on page 3) must be in its
"Preamp" setting.
For M/S recordings there are two
possibilities. The M and S signals can
be sent through the matrix and the
resulting L and R signals recorded
("Output" switch in the "Matrix" posi-
tion), or the M and S signals can be
recorded directly, and dematrixed in
subsequent playback (switch in the
"Preamp" position). Dematrixed L and
R signals can be monitored while the
M and S signals are being recorded.
If possible, the equipment to which
the main outputs of the VMS 5 U are
connected should have balanced inputs
for best possible rejection of hum and
radio-frequency interference. Not all
recorders offer balanced inputs, but
with short cables (less than a few
meters) this is generally not so critical.
If you need to connect the output of
the VMS 5 U to an unbalanced input,
the best way is to connect pin 2 of the
VMS 5 U's output to the "hot" contact
of the input, while the shield of the
cable to the recorder’s inputs should
be connected both to pin 1 and the
housing of the XLR connector at the
VMS 5 U’s outputs.
With equipment whose circuit ground
10
is not directly connected to its chassis
ground, the risk of interference can be
lessened by using shielded, two-con-
ductor cable. As before, pin 2 of the
VMS 5 U's output should be connected
to the "hot" contact of the input,
while the circuit ground will be carried
by pin 3 of the output, and the cable
shield will then merely connect the two
component housings with one another.
Connecting the VMS 5 U to an unbal-
anced input
VMS 5 U
recorder
1
3
2