Harris Legacy 99-1300-0, Operation & Technical Manual

Page: 56 / 98

Revision B • 1/03
H A R R I S C O R P O R A T I O N
2-44
2 Installation
STUDIO MODULE — EXTERNAL (WITH DIP SWITCH 7 SET TO ON)
This configuration (DIP switch 7 set to On)
is used in applications where the External
location has a talent mic connected to a con-
sole input.
As such, the Talk to logic (Talk to C/R and
Talk to Studio) is connected to the input mod-
ule logic (see pages 2-20 & 2-21). Pins 4 and 5
can then be used as the logic outputs Dim (ac-
tivated when another location talks to Exter-
nal) and Mute (activated when the External mic
module is on). These are available to drive an
outboard mute/dim controller for an External
monitor speaker.
Typically the Talk from External audio and
Talk to Control Room logic is not used in this
application.
See pages 2-42 & 2-43 for the functions when
DIP switch 7 is set to Off.
Studio Module, External (with DIP Switch 7 On) — Simplified Logic Diagram
Notes:
Opto-Isolated inputs are current limited and work
with +5 to +40 VDC logic.
Opto-Isolated outputs can sink up to 60 volts or
350 mA max. current flow.
15
14
Inter
nal Logic
Talk to Control Room (-)
Activate Logic Inputs (+)
Logic Ground 16
Logic 5VDC
Logic 5VDC
6 Talk To External Tally
7
8
5 External Dim Command
4 External Mute Command
Signals with DIP Switch 7 Set to On
(wire insertion end view)
Audio Connections
Talk Audio to External (pins 3,10,11)
Talk Audio From External (pins 1, 2, 9)
* Pin function only when DIP switch 7 is set to On
Logic 5VDC
Logic 5VDC
Talk to External Tally
Dim Command (N/O) *
Mute Command (N/O) *
Talk to Ext. Audio (Low)
Talk from Ext. Audio Shield
Talk from Ext. Audio (Low)
Logic Ground
Activate Logic Input (+)
Talk to Control Room (-)
no connection
no connection
Talk to Ext. Audio (High)
Talk to Ext. Audio Shield
Talk from Ext. Audio (High)
8
7
6
5
4
3
2
1
16
15
14
13
12
11
10
9