Studio Technologies 210 2012 - Manual (Page 32)

Issue 5, September 2012 Model 210 User Guide
Page 32 Studio Technologies, Inc.
an interface cable kit, part number 31087,
is available from Studio Technologies.
Each kit includes five cable assemblies
and a length of heat-shrinkable tubing.
Each cable assembly consists of a mating
connector with three color-coded wires
attached. These wires, nominally 12 inch-
es in length, allow convenient soldering
to a connector slated to be installed in a
spare location on the Model 210’s back
panel. For reference, the wire color for pin
1 is gray, pin 2 is yellow, and pin 3 is blue.
The heat-shrinkable tubing is provided so
that the connector solder cups can be in-
sulated from each other. It will also provide
some strain relief to the solder joints. Be
certain to slip the desired length of tubing
over the wire prior to soldering a connec-
tion! (If the writer had a dollar for every
time he forgot to put tubing on a wire (or
slip on a connector shell) before making
a solder connection….)
The Model 210’s enclosure must be disas-
sembled prior to installing connectors in
the spare locations. Four hex-head ma-
chine screws, two on the bottom front of
the enclosure and two on the back panel,
must be removed. A 5/64-inch hex driver
is required. The cover can then be care-
fully separated from the chassis, remain-
ing attached by means of a flexible cable
assembly. This “flex-cable” assembly links
the main printed circuit board assembly
with the board assembly that contains the
pushbuttons and LED indicators. Ensure
that the flex cable is not damaged while
the Model 210 is being customized. For
easier access, the pushbutton/LED board
assembly can also be easily removed.
The 3-position headers on the Model
210’s main circuit board assembly are lo-
cated close to their related input or output
connectors. The following list provides the
printed circuit board reference numbers
and text and their associated functions:
P3 (PHONES): Headphone output: pin 1
common; pin 2 tip (left); pin 3 ring (right).
P4 (MIC IN): Microphone input: pin 1
shield; pin 2 high; pin 3 low. Follows back-
panel 3-pin female XLR pin assignment.
P5 (MAIN OUT): Main output: pin 1
shield; pin 2 high; pin 3 low. Careful! Back-
panel 3-pin male XLR has pin 1 floating,
pin 2 high, pin 3 low.
P6 (TB OUT): Talkback output: pin 1
shield; pin 2 high; pin 3 low. Careful! Back-
panel 3-pin male XLR has pin 1 floating,
pin 2 high, pin 3 low.
P7 (IFB IN): IFB input: pin 1 common; pin
2 DC with channel 1 audio; pin 3 channel
2 audio. Follows back-panel 3-pin female
XLR pin assignment.
P9 (DC IN 2): External 24 volt DC input:
pin 1 common; pin 2 +24 Vdc; pin 3 not
used. Back-panel 2.1 x 5.5 mm jack has
+24 Vdc on center pin. Header P8 is used
by the back-panel 24 Vdc jack assembly
and is electrically in parallel with P9.
Additional functions can be accessed
using these 3-position headers:
P10 (AUX IN 2): Auxiliary input 2: pin 1
common; pin 2 unbalanced audio @
–10 dBu nominal; pin 3 not used.
P11 (AUX IN 1): Auxiliary input 1: pin 1
common; pin 2 unbalanced audio @
–10 dBu nominal; pin 3 not used.
P12 (LIGHTING): Pushbutton backlight-
ing: pin 1 not used; pin 2 button lamps;
pin 3 current limited 24 volts from external
24 Vdc input.