Installation and Operation
Page 4-10
Owner’s Manual
TVM450/S/TVM550/S/TVM550II/TVM550IIS
TVM550IIS
All aspects of operation for the TVM550IIS are the same as the TVM450S/TVM550S,
but uses the DSG2000BD module instead.
DSG2000BD Connections
The DSG2000BD module accepts aural signals via separate inputs. Refer to
Chapter 3, Figures 3-1 and 3-3, for all numbers in parentheses.
Rear Panel
1. Connect all appropriate cables between the ground connections on the rear
panel terminal strip (26), (29), and/or (31) and the equipment rack ground.
2. Insert the video signal into the VIDEO IN BNC connector on the rear panel
(24).
3. Attach desired audio input cables to the
+
and
–
terminals (25), (27), (28), (30)
on the rear panel terminal strips.
4. Plug in the AC cord, and press the front panel POWER switch to turn the
unit on.
600
τ
τ
τ
τ
or 10 k
τ
τ
τ
τ
Operation
If a change from the stock 600
τ
to 10 k
τ
impedance operation is needed, use
the following procedure to make the changes:
1. Unplug the main power cable from the AC outlet.
2. Remove all cables from the rear panel connectors and terminals.
3. Remove the top cover by removing the two screws from each side of the unit
and lifting the cover, while pulling it gently toward the rear of the unit.
4. See Figure 5-17, and locate the digital BTSC Audio Interface PC board.
5. Note that four rubber-encased jumpers are located on the rearmost terminals on
jacks J1 to J4. This is the factory setting for 600
τ
. See Table 4-2 for jumper con-
nection relationships.
6. To change to 10 k
τ
operation, remove all jumpers from jacks J1 to J4, and
move them to the other terminals on the same jacks.
7.
Reverse step 6 if 600
τ
operation is needed.
8. Reinstall the top cover, and reconnect all cables removed in steps 1 and 2.
