© 2005 Wohler Technologies Inc. ALL rights reserved
10
VM SDI Digital Series
User Manual P/N
821625
Rev-
A
A
B
C
D
E
F
G
H
Please refer to
Figure-2b
on the facing page to familiarize yourself with the rear panel features of the
VM SDI Digital Series
units.
The following sections describe these features and are referenced, by letter, to
Figure-2b
.
Power Connector
Attach the supplied IEC-320 power cord between this connector and mains power.
SDI Input Connector
This BNC input connector (
SDI IN
) is configured for unbalanced,
75
Ω
Ω
Ω
Ω
Ω
impedance connections. In the
VMSDA-1
model,
this input accepts standard
SDI
formatted digital signals. In the
VMMDA-1
model, this input accepts
either
standard
SDI
or
HD-SDI
(high-definition
SDI
) formatted digital signals. To monitor the digital source signals entering this input connector,
set the
Source Select Switch
(
Item 10
, page
8
) to
SDI
.
Note:
The
SDI Lock Status LED
(
Item 4
, page
8
) will continue to indicate
SDI
lock status for this input even when the
SDI
source is
not
selected for monitoring.
SDI Output Connector
This BNC connector (
SDI OUT
) outputs a reclocked (regenerated) copy of the signal entering the
SDI Input Connector
(
Item B
).
Analog Output Connector (Left and Right)
This "mini" Phoenix style (Mini-Combicon) dual vertical, 6-position terminal block connector outputs an
analog
signal of
the source currently selected for monitoring. When the selected source is digital (
AES
,
SDI
, or
HD-SDI
), the unit will
automatically de-embed the audio to
analog
for output from this connector. The top three positions are the
left
output; the
bottom three positions are the
right
output. Pinout information is silk-screened just below the connector.
AES Balanced Input
This "mini" Phoenix style (Mini-Combicon) 3-position terminal block connector receives
AES
digital signals and is configured
for
balanced
110
Ω
Ω
Ω
Ω
Ω
impedance connections. To monitor the source signals entering this input connector, set the
Source
Select Switch
(
Item 10
, page
8
) to
AES
.
Note:
There is only
one
AES
input
channel
; do not connect two
AES
signal sources simultaneously to both the balanced
and unbalanced AES input
connectors
. Only one
AES
input connector (balanced
or
unbalanced) should be used at a time.
AES Unbalanced Input
This female BNC connector receives
AES
digital signals and is configured for
unbalanced
75
Ω
Ω
Ω
Ω
Ω
impedance connections.
To monitor the digital source signals entering this input connector, set the
Source Select Switch
(
Item 10
, page
8
) to
AES
.
Note:
There is only
one
AES
input
channel
; do not connect two
AES
signal sources simultaneously to both the balanced
and unbalanced AES input
connectors
. Only one
AES
input connector (balanced
or
unbalanced) should be used at a time.
AES Termination DIP Module
This 2-position DIP switch module is used to set the termination characteristics for the
AES
input channel (both balanced and
unbalanced). In the event that the
AES
input channel is fed to downstream equipment, DIP switch section
1
(
left
-side switch)
should be placed in the UP (unterminated) position. If there are
no
downstream connections, then DIP switch section
1
should
be placed in the DOWN (terminated) position.
Note:
Section
2
of the DIP module is not used.
Analog Input Connector
This "mini" Phoenix style (Mini-Combicon) dual vertical, 6-position terminal block connector accepts standard
analog
signals and is configured for
balanced
100k
Ω
Ω
Ω
Ω
Ω
impedance connections. The top three positions are the
left
output; the
bottom three positions are the
right
output. Pinout information is silk-screened just below the connector. To monitor the
analog source signals entering this input connector, set the
Source Select Switch
(
Item 10
, page
8
) to
ANALOG
.
Rear Panel Features
Section 2:
Operation
