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Basic Operation Mark Levinson
Rear Panel Overview (continued)
6. phono ground connector
Provides an earth-reference ground connection for a phono
cartridge. One binding post labeled phono ground is available
for a phono grounding wire. Connecting the phono grounding
wire to the phono ground connector grounds the phono
cartridge to the Nº 320S chassis, which sometimes reduces audible
hum and other noise that results from multiple grounding
paths. Otherwise, the ground connection between the Nº 320S
and the associated phono cartridge is isolated.
Note
Listen to the associated phono cartridge both with and
without the phono ground connection. Then, select the
connection that results in the best performance.
7. trigger output connector
Provides 12 or 5V DC output to control connected components.
One 3.5mm mini-jack labeled trigger output is available for a
mono plug (Tip/Sleeve) connection. The Trig. parameter can
be used to configure the trigger output connector to provide
12 or 5V DC output.
8. ir input connector
Provides input of 5V infrared signals with no more than
100mA of current from standard infrared distribution equipment
such as IR repeaters. One 3.5mm mini-jack labeled ir input is
available for a mono plug (Tip/Sleeve) connection. The tip of
the mono-plug must have positive polarity as shown in the
illustration to the left.
9. RS-232 port
Provides serial control, performing flash memory software
upgrades and facilitating external control in AMX™ and
Crestron™ systems. One 6-pin modular RJ-11 port labeled
RS-232 is available.
10. serial number label
Indicates the Nº 320S serial number, which is required for
product registration and warranty service.
3 to 15V @ <100mA