Protech Audio 2000 - Manual (Page 9)

- Page 9 -
OUTPUT CARD ASSEMBLY
Switch allows chassis to be linked, as master or slave unit. A =
MASTER
SLAVE.
SPACE RESERVED FOR
OPTIONAL ADD-ON
AUTOMATIC LEVEL CONTROL
PC ASSEMBLY.
LED's = Green indicates +DC power.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Remote Master In.
All Mute
Ground.
Group Mute.
Pink Noise Option Activation
Do Not Use!
Aux Input Hi
Aux Input Lo (Ground)
Do Not Use!
Do Not Use!
Mix 1 Out Hi.
Mix 1 Out Lo.
Ground.
Mix 2 Out Hi.
Mix 2 Out Lo.
Master Gain Set
TYPICAL OUTPUT CONNECTOR
1 -
2 -
3 -
4 -
5 -
6 -
7 -
8 -
9 -
10 -
11 -
12 -
13 -
14 -
15 - Remote Master In..............
All Mute............................
Ground...............................
Group Mute.......................
Spare..................................
N/A.....................................
AUX In HI.........................
Ground................................
N/A....................................
N/A....................................
Mix Out Hi.........................
Mix Out Lo........................
Ground...............................
Mix Out Hi.........................
Mix Out Lo........................ External DC voltage to control master output level.
Grounding pin mutes all inputs.
Ground.
Grounding pin mutes all inputs with group mute switch in "ENABLE" position.
Not Used
Do Not Use!
Auxillary Input High
Auxillary Input Low
Ground
Do Not Use!
Main Mix #1 Output High.
Main Mix #1 Output Low.
Ground.
Main Mix #2 Output High.
Main Mix #2 Output Low.
OUTPUT CONNECTOR FUNCTIONS
OUTPUT FEATURES
1 2 3 4 5 6 7 8
MASTER
AC
CT
AC
GND
18VACT
GND ON
+15
GND
-15
LINK
IN
OUT
- Page 12 -
Wire one resistor-potentiometer circuit for each output circuit requiring remote
level control.
Turn gain trimpots on chassis full counterclockwise, on all channels having
remote level.control circuits
Set all remote potentiometers to full clockwise position.
Apply AC power to external power transformer.
Adjust each input and output trimpot to required level by rotating trimpots
clockwise. Suggested settings are 1:00 for input gain trimpots, and 12:00
for the master output trimpot.
This alignment procedure will allow the installer to limit the
maximum gain available to the end user.
1-
2-
3-
4-
5-
REMOTE VOLUME CONTROL CONNECTIONS
12K
2K
To Pin 1 On
Ouput card
connector
10K Pot
Output
6.8K
18K
10K Pot
Input
+15
-15
Note: Models 2000-RVC-IN (Input Remote Control) & 2000-RVC-OP (Output Re-
mote Control) are available to provide the remote control circuits described below.
See next page.
To Pin 1 On
Input card
connector
Model 2000-RVC-OP
Circuit
Model 2000-RVC-IN
Circuit