Auditronics 220 Digital Audio Console, Техническое руководство, Страница: 74 / 109

page 7 – 5
220 / March 2000
S U P E R P H O N E I N P U T
Cue Dropout
Dipswitch SW3 position 4, when activated, will cause CUE (i.e., caller
set-up buttons 1 & 2) to turn off when the module’s ON/START switch is
pressed. This is the factory default setting.
Gain Trimpots
There are eight PCB-mounted trimpots (to the left of DB-25 connec-
tors). They are used as follows:
CR1 - sets Callers 2 In port input gain
CR2 - sets Callers 1 In port input gain
CR3 – sets the module’s output level to Hybrid 2
CR4 – sets the module’s output level to Hybrid 1
CR5 – sets the module’s “callers only” output level
CR6 – sets the module’s “composite minus callers” (“talent”)
output level
CR7 – sets the module’s “composite” output level
CR8 – sets the External In port input gain
Hook-Ups
As stated before, all user wiring to and from SPD-220 modules takes
place at DB-25 multi-pin connectors mounted at the top of the module and
located underneath the hinged meterbridge. There are two connectors per
module: the upper one handles audio input signals; the lower audio outputs
and control signals. A pinout drawing on page 7-7 shows all wiring
connections at a glance.
Audio Connections (upper DB-25 “A” Connector)
These include External In and station Hybrid 1 & 2 inputs. All are
+4dBu balanced analog mono.
Pin 25 – Ext In SH
Pin 24 – Ext In HI
Pin 12 – Ext In LO
Pin 22 – Hybrid 1 In SH
Pin 21 – Hybrid 1 In HI
Pin 9 – Hybrid 1 In LO
Pin 8 – Hybrid 2 In SH
Pin 7 – Hybrid 2 In HI
Pin 20 – Hybrid 2 In LO
Pins 2,5,11,13,16 and 19 – Audio Ground
Factory default settings for
these trimpots is UNITY
GAIN.
Typical DB-25
connector
9
10
11
12
13
22
23
24
25
6
7
8
19
20
21
4
5
16
17
18
1
2
3
14
15