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Introduction, cont’d
TPX 88 Matrix Switchers • Introduction1-8
Features
Inputs — These switchers accept 8 sets of TP signals that are input from Extron
twisted pair transmitters on TP cable terminated with RJ-45 connectors. Each
transmitter creates the proprietary signal from its RGBHV, RGBS, RGsB,
RsGsBs, HDTV, component video, S-video, or composite video input. Most
transmitters also include either digital or differential analog audio on the
proprietary signal.
TP outputs — These switchers output 8 sets of TP signals for use by Extron twisted
pair receivers.
TPX 88 — The output proprietary signal includes the encoded video
(RGBHV, RGBS, RGsB, RsGsBs, HDTV, component video, S-video, or
composite video), but not the audio output by most TP transmitters.
However, if the input TP link originated from an MTP transmitter with audio,
the output proprietary signal also includes the audio portion of the link.
TPX 88 A — The output proprietary signal includes the encoded video
(RGBHV, RGBS, RGsB, RsGsBs, HDTV, component video, S-video, or
composite video) and audio.
Audio outputs (TPX 88 A only) — If the input TP link originated from a member of
the TP family of transmitters (see the table on page 1-3 and page 1-4), the
TPX 88 A outputs 8 stereo audio outputs, balanced or unbalanced, on 3.5 mm,
5-pole captive screw terminals.
Audio gain and attenuation (TPX 88 A only) — Users can set the input level of
audio gain or attenuation (-18 dB to +24 dB) for the signal that is output
locally. Gain and attenuation can be set via the RS-232/RS-422 link or from
the front panel. Individual input audio levels can be adjusted so there are no
noticeable volume differences between sources (figure 1-2).
Audio
Inputs
Audio
Inputs
Consumer VCR
TP T 15HD A
TP T 15HD A
No noticeable volume
differences between sources
Audio System
Pro CD Player
+2
-1
-3
-7
-10
-14
Low Audio
Output Level
+5
+8
+4
+1
-2
-5
-8
-12
+7
+10
+2
-1
-4
-7
-10
-14
Output
Level
+5
+8
+4
+1
-2
-5
-8
-12
+7
+10
dBvdBu
High Audio
Output Level
dBvdBu
+2
-1
-3
-7
-10
-14
+5
+8
+4
+1
-2
-5
-8
-12
+7
+10
dBvdBu
TPX88 A Twisted Pair Metrix Switcher
SW SERIES
VIDEO / AUDIO SWITCHER
AUDIO
CONF/SAVE
EXECUTIVE
MODE
12
11
10
9
8
7
6
5
4
32
1
AUTO SWICH
ACUTIVE
VIDEO
AUDIO
I/O
-dB
+dB
PRESET
ENTER
TPX 88 A
TWISTED PAIR SWITCHER
VIEW
VIDEO
AUDIO
ESC
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
I
N
P
U
T
O
U
T
P
U
T
I
N
P
U
T
O
U
T
P
U
T
I/O AUDIO
MUTE ALL
VOLUME
PC
H-SHIFT
TP T 15HD A
AUDIO
BUFFEREDCOMPUTER
INPUT LOCAL MONITOR
ID PIN 4 ID PIN 11
PC
H-SHIFT
TP T 15HD A
AUDIO
BUFFEREDCOMPUTER
INPUT LOCAL MONITOR
ID PIN 4 ID PIN 11
Figure 1-2 — Audio gain and attenuation