2-7
ISM 824 Integration Scaling Multiswitcher • Installation
Output connections
The basic device has video and audio connectors for two pass-through outputs.
With four optional cards installed, there are video and audio connectors for up to
eight outputs.
N
The number of outputs is dependent on the number and types of cards installed.
g
Pass-through video output BNC connectors — Connect RGB video displays
to these two sets of female BNC connectors for unprocessed pass-through
signals (RGBHV, RGBS, RGsB, RsGsBs, HDTV, component video, S-video, or
composite video). See figure 2-8 for the relevant connector positions used in
each video format.
H/HV
RGBHV
Video
RGsB or
Component
Video
S-Video Composite
Video
RGBS
Video
V
H/HV
V
H/HV
V
H/HV
V
H/HV
V
R/R-Y
G/Y
VID
B/C
B-Y
R/R-Y
G/Y
VID
B/C
B-Y
R/R-Y
G/Y
VID
B/C
B-Y
R/R-Y
G/Y
VID
B/C
B-Y
R/R-Y
G/Y
VID
B/C
B-Y
Figure 2-8 — BNC output connections for outputs 1 and 2
h
Audio output connectors — Connect audio devices, such as an audio
amplifier or powered speakers to these two 3.5 mm, 5-pole captive screw
connectors. The connectors output the selected unamplified, line level audio.
See figure 2-9 to properly wire an output connector.
Unbalanced Stereo Output
Tip
NO GROUND HERE.
Sleeve(s)
Tip
NO GROUND HERE.
Balanced Stereo Output
Tip
Ring
Sleeve(s)
Tip
Ring
L R
L R
Left
Right
Left
Right
CAUTION
For unbalanced audio, connect the sleeve(s)
to the center contact ground. DO NOT
connect the sleeve(s) to the negative (-)
Figure 2-9 — Captive screw connector wiring for audio output
C
Connect the sleeve to ground (Gnd). Connecting the sleeve to a
negative (-) terminal will damage the audio output circuits.
By default, the audio output follows the video switch. Audio breakaway,
commanded via the front panel, the Ethernet link, or the RS-232/RS-422 link,
allows selection from any one of the audio input sources.
See chapter 3, “Operation and Setup”, chapter 4, “SIS
™
Programming and
Control”, chapter 5, “ISM 824 Multiswitcher Software”, and chapter 6, “HTML
Operation”, for details.
