Using A Turntable; Tip Polarity For External Ir Input - Mark Levinson 38S Operating Manual

Building a Link cable
PRECAUTION

Using a turntable

Tip polarity for
External IR input
The RJ-45 cable needed for the Link connection between source
components and the preamplifier may be purchased from your
Mark Levinson dealer. It may also be easily and inexpensively
made to length using two RJ-45 connectors and the appropriate
length (up to 100 feet/30 meters) of RJ-45 (flat, eight conductor)
cable.
RJ-45 cables and connectors are used throughout the world for
both telecommun-ications and computers, and are widely
available at low cost. The connectors are crimped on to the ends
of the cable such that pin 1 at one end is connected to pin 1 at
the other end. Such a "straight-through" connection is (counter-
intuitively) made by introducing a 180 twist in the cable between
the two ends, as shown below.
To Mark Levinson
digital processor
Locking tab
The power amplifier Link connection is made using a 6-conductor
Link cable. Connect the Nº38's master port to the slave port of a
compatible Mark Levinson power amplifier.
Connecting the communication ports other than as
described in this manual will damage the Nº38S and the
associated Mark Levinson components, and will void those
products' warranties.
6 INPUTS 3-6
Accepts right-channel and left-channel (single-ended) inputs from
line-level source equipment such as tuners, CD players, and tape
decks.
If a turntable is to be used with the Nº38S, it must be used in
conjunction with a phono preamp such as the Mark Levinson Nº25
which will handle RIAA equalization and which will deliver a line-
level signal to the input of the Nº38S.
7 EXTERNAL IR INPUT
The Nº38S incorporates an infrared repeater input to facilitate a
wide range of installation options. If desired, the Nº38S may be
placed inside a cabinet or outside the normal line-of-sight in the
listening area, with the controlling IR signal being relayed to the
Nº38S by any of a number of commercially-available IR repeaters.
The specifications for this IR input call for a triggering voltage of
5 volts at no more than 100 milliamps of current, with the tip of the
1 ⁄ " mini-plug having positive polarity, as below:
8
If you would like more information on the possibility of using an
infrared repeater with your Nº38S, please contact your Mark
Levinson dealer.
®
Locking tab
180 twist
– +
5 volts @ less
than 100 mA
To Nº38
15