Grass Valley XSwitch Feb 08 2006 - Manual (Page 20)

20 XSWITCH Installation and Operation Manual
Section 3 — Connections and Switching Functions
Audio Switch Card Grounding Switches
There are three small slide switches on the Audio Switch circuit board,
labeled S1, S2 and S3. These switches allow various grounding schemes to
be implemented and will ultimately be set according to empirically estab-
lished requirements of a particular installation. S1 and S2 provide a means
of isolating the shield ground at the XLR connection to the Audio Switch
Card. When these switches are open, the coaxial shield is NOT connected
to circuit ground. This allows for connection of the shield at one end of the
cable only. When open, “S3” switches the cable connector housing of the
outputs away from chassis ground. The requirement for the setting of these
3 switches may vary from one system to the next and is to be determined
empirically. The card leaves the factory with all 3 switches in the closed
position. To open any of the three switches, move the slider away from the
connector panel.
KVM Module: VGA-Switch Connections
The KVM Module cross switches two Ignite systems between two control
stations. The control stations comprise keyboards, monitors, and pointing
devices. The KVM backplane connectors are shown in
Figure 9 .
Figure 9. KVM Module Backplane
Note All VGA connections are made using standard VGA cables terminated with 15
pin, high density D connectors. KVM Module VGA inputs are pin type, outputs
are socket type.
Note The VGA switching circuitry has both passive and active elements. Therefore,
power must be on in order to pass all VGA signals through the XSWITCH.
Note With systems using ScriptViewer an additional VGA switch card is provided
to facilitate Teleprompter switching.
STUDIO A
IN
STUDIO A
OU T
STUDIO B
IN
STUDIO B
OUT
K M K M K M M K
IN
OUT
S.V. A
IN
S.V. A
OU T
S.V. B
IN
S.V. B
OU T
IN
OU T
VGA LEFT
STUDIO A
VGA RIGHT
STUDIO B
EDI TO R
S.V. A
PROMPTER
S.V. B
E
X
P
A
N
S
I
O
N
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