7.2 VIDEO AND AUDIO SWITCHING CONTROL.
The host must send the following sequence:
BXXYY
followed by
CR
where: B is the character Hex 42
XX is the output (from 01 to 12)
YY is the video and audio input (from 01 to 16)
Warning: if YY is 00 the video output will be set to high impedance the output
audio will be set to 0 Volt
Example: to switch the video and audio input No. 15 on output No. 7 the following characters
must be sent on line: 42 30 37 31 35 0D
A video input and an audio input coming form different sources can be switched to the video
and audio output. The sequence of the characters becomes:
BXXYYZZ
followed by
CR
where: B is the character Hex 42
XX is the output (from 01 to 12)
YY is the video input (from 01 to 16)
ZZ is the audio input (from 01 to 16)
Warning: if YY is 00 the video output will be set to high impedance
if ZZ is 00 the output audio will be set to 0 Volt
Example: To switch the video of the input 1 and the audio of the input 3 on output 10 the
following characters must be sent on line: 42 31 30 30 31 30 33 0D
The TZM1612 matrix replies:
ACK
(Hex 06) if the command has been performed correctly
NACK
(Hex 15) if transmission errors have been detected
7.3 VIDEO SWITCHING CONTROL
The host must send the following sequence:
VXXYY
followed by
CR
where: V is the character Hex 56
XX is the output (from 01 to 12)
YY is the video input (from 01 to 16)
Warning: if YY is 00 the video output will be set to high impedance
Example: To set high impedance on the video output 8 the following characters must be sent
on line: 56 30 38 30 30 0D
The TZM1612 matrix replies:
ACK
(Hex 06) if the command has been performed correctly
NACK
(Hex 15) if transmission errors have been detected
e) Setting of switching time from keypad:
The TZM1612 performs through blank switching. Switching time can be selected by the user
for improved adaptation to the characteristics of the destination.
This important feature avoids the annoying effects that are typical of LCD devices when a
signal is switched at their input. As each LCD has its own response time, for optimal
switching, the user can modify blank duration from 0.3 to 2 seconds.
Four times can be set: 0.3 sec.; 0.5 sec.; 1 sec. and 2 sec. as per the table below. A flash of
the built-in led of buttons IN13÷IN16 indicates that the command has been saved.
The time set remains the same also for subsequent power-ons.
MODE+IN13
0.3
sec.
MODE+IN14
0.5
sec.
MODE+IN15
1
sec.
MODE+IN16
2
sec.
To display the switching time at which the TZM 1612 unit is working:
-LOCK the MODE button.
- Observe the built-in leds of buttons IN13÷IN16. The led of button IN13 indicates the
shortest time while that of button IN16 indicates the longest time.
TZM1612
16x12 RGBHV & AUDIO MATRIX
TZM1612
16x12 RGBHV & AUDIO MATRIX
12
ELPRO Video Labs s.r.l.
Via della Praia 4/a FERRIERA di BUTTIGLIERA ALTA (TO) – ITALY
Tel.+39 0119348778 - FAX +39 0119348779
9
ELPRO Video Labs s.r.l.
Via della Praia 4/a FERRIERA di BUTTIGLIERA ALTA (TO) – ITALY
Tel.+39 0119348778 - FAX +39 0119348779
Through blank shortest time
Through blank longest time
