XTP CrossPoint Series • Operation
66
Optimizing the Analog Audio
The level for each analog audio input can be adjusted within a range of -18 dB to +24 dB,
so there are no noticeable volume differences between sources and for the best headroom
and signal-to-noise ratio. The volume for each analog audio output can be adjusted from full
loudness to effectively muted. Adjust the levels as follows:
1.
Connect analog audio sources to all desired inputs and connect the analog audio
outputs to output devices such as audio players (see
on
page 14). For best results, wire all of the inputs and the outputs balanced.
2.
Power on the audio sources, the matrix switcher, and the audio players.
3.
on page 37), listening to
the audio with a critical ear or measuring the output audio level with test equipment,
such as a VU meter.
4.
As necessary, adjust the input audio level of each input (see
on page 48) so that the approximate output level is the same
for all selected inputs.
5.
Tie an audio input to each analog audio output.
6.
As necessary, adjust the output audio level of each output (see
on page 54).
RS-232 Insertion
The XTP twisted pair and fiber input and output boards allow you to insert RS-232 control
signals onto the same XTP cable that carries video and audio to extend them to the Over
XTP port on a connected endpoint (see
page 70). The control signals can be inserted two ways:
Ethernet to RS-232 insertion (see
•
A control signal applied to the matrix switcher LAN port can be routed to any matrix
switcher XTP port.
Captive screw insertion (see
Captive Screw Signal Insertion
on page 69) —
•
A control signal applied to an RS-232 captive screw port on an XTP board is tied
directly to the same-numbered XTP port on that board.
•
RS-232 port 1 is tied to XTP port 1 only, 2 is tied to 2, and so on.
•
You must physically connect a cable connected to the captive screw connector where a
control signal is to be inserted.
The insert inputs and outputs, whether inserted via Ethernet or captive screw connectors,
can support up to a 115k baud rate.
Enabling Ethernet and Captive Screw Insertion
For an XTP port to distribute the inserted signal, it must be enabled for either Ethernet
insertion or captive screw insertion (default). The simplest way to make this selection is
using the XTP Configuration Software.
Alternatively, you can make this selection via SIS commands.
•
For the input XTP and fiber boards, see the
input board Captive screw and Ethernet
SIS commands on page 92.
•
For the output XTP and fiber boards, see the
output board Captive screw and
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