Studio-technologies 41 2004 User Manual download pdf (Page 8)

Model 41 User Guide Issue 1, October 2004

Studio Technologies, Inc. Page 9

connected. In this situation the left source

would be connected to input channel one

while the right source would be connected

to input channel two. This might also

be the case with other professional audio

applications, such as recording and post-

production.

Audio input connections are made by way

of one female 25-pin D-subminiature con-

nector which is located on the Model 41’s

back panel. A cable harness is required

with a 25-pin D-sub plug (male) on one

end and the desired mating connectors

on the other. This cable harness is not sup-

plied by Studio Technologies. (Note that in

some locations the term “cable loom” may

be used instead of “cable harness.”) The

wiring scheme used by the D-sub complies

with the now-ubiquitous one made familiar

by TASCAM® with their DA-88® product.

A wiring harness prepared for connection

to the Model 41’s audio inputs is identical

to a DA-88-style input harness. Please refer

to Figures 2 and 3 for connection details.

Note that unlike a DA-88-style harness,

the Model 41’s D-sub connector’s hold-

down screws use 4-40 threads. This com-

plies with the original design standard for

D-subminiature connectors which used

English rather than metric thread pitch.

Signal Signal

Connections High (+) Low (–) Shield

IFB Circuit 1-Interrupt 24 12 25

IFB Circuit 1-Program 10 23 11

IFB Circuit 2-Interrupt 21 9 22

IFB Circuit 2-Program 7 20 8

IFB Circuit 3-Interrupt 18 6 19

IFB Circuit 3-Program 4 17 5

IFB Circuit 4-Interrupt 15 3 16

IFB Circuit 4-Program 1 14 2

Notes: 1) Connector type on Model 41 is 25-pin

D-subminiature female. Installer must provide plug

(male). Connector uses 4-40 threaded inserts for

locking with mating plug.

2) Wiring scheme follows TASCAM DA-88 convention.

Standard DA-88-style wiring harnesses are directly

compatible, with the exception of 4-40 screw threads

being required.

Figure 2. Connections for Audio Inputs using

IFB Nomenclature

Figure 1. Detail of back panel showing connector used for audio inputs

The Model 41’s audio input circuits have

a nominal signal level of +4 dBu. They

are transformer coupled, have a nominal

impedance of 10 k ohms, and compatible

with balanced or unbalanced sources.

Balanced sources should be wired so that

signal high is connected to the + pins,

signal low to the – pins, and shield to the

shield pins. With unbalanced sources,

connect signal high to the + pins, and

shield to both the – and the shield pins.

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Studio-technologies 41 2004 User Manual Page 8

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