AV-452 Serial Control Specification
7733 Telegraph Road • Montebello, CA 90640 • (323) 726-0303 • http://www.tascamcontractor.com
All features and specifications are subject to change without notice. Contact your local TASCAM representative for the latest information.
Page 4 of 8
AV-452_RS-232_spec.pdf
031104
AV CHANNEL
A/V CHANNEL DIM
AV CHANNEL DIM OFF
4
34h
.
2Eh
LF
0Ah
.
2Eh
.
2Eh
0
30h
N
4Eh
c
63h
A
41h
0
30h
CR
0Dh
0
30h
.
2Eh
AV CHANNEL DIM ON
4
34h
.
2Eh
LF
0Ah
.
2Eh
.
2Eh
0
30h
N
4Eh
c
63h
A
41h
0
30h
CR
0Dh
1
31h
.
2Eh
QUERY AV CHANNEL DIM
4
34h
.
2Eh
LF
0Ah
.
2Eh
.
2Eh
0
30h
N
4Eh
q
71h
A
41h
0
30h
CR
0Dh
0
30h
.
2Eh
STATUS - AV DIM OFF
4
34h
.
2Eh
LF
0Ah
.
2Eh
.
2Eh
0
30h
0
30h
s
73h
1
31h
0
30h
CR
0Dh
0
30h
.
2Eh
STATUS - AV DIM ON
4
34h
.
2Eh
LF
0Ah
.
2Eh
.
2Eh
0
30h
0
30h
s
73h
1
31h
0
30h
CR
0Dh
1
31h
.
2Eh
The AV channel of the AV-452 offers control and status on
DIM A/V, the seven A/V source selection items and the REC
MONITOR control. In a related item, there is also status
information on the AUX IN source type.
As with the other commands, the AV-452 will generate
status commands when these items are changed. Note
that the AUX IN TYPE status is read only... you cannot
control it from an external source.
DIM AV significantly reduces the volume of the A/V
channel. The command structure for this follows the same
behavior as mic MUTE - the status strings will be generated
any time the status changes, or when it is queried.
A/V SOURCE SELECTION & REC MONITOR SELECTION, EXPLAINED
Parameter 11 - AV Sources w/ Routing:
This controls the five buttons on the AV channel strip that
handle the routing of audio/video sources. This includes
CASS, CD-RW, DVD, VCR, and AUX, shown at right.) These
work like a home receiver; one of these five buttons will be
active at all times. In the signal flow diagram, this switch
is in the bottom center.
Parameter 12 - REC MONITOR Switch:
Under normal operations, the REC MONITOR switch would
be set to SOURCE. That means the audio source selected
in the AV channel will be sent to the CD-RW, CASS and VCR
outputs on the AV-452. REC MONITOR also offers the
ability to force the cassette or CD-RW to the record out,
allowing you to monitor the return from the recorder. This
is helpful when creating dubs from one unit to another to
change formats, rearrange content on media, or create a
back-up.
Parameter 5 - RGB 1 and RGB 2:
All of the sources with video content (DVD, VCR, AUX,
RGB1 and RGB2) can learn IR commands for a projector.
These codes will be emitted through a rear panel IR driver.
This allows the AV-452 to control the projector source.
The RGB1 and RGB2 buttons
do not
route signal internally.
These buttons are only intended to learn IR commands to
be sent to a projector (or another external switcher).
These buttons illuminate when
pressed. When another video source
is selected - such as DVD, VCR, or
AUX IN - the RGB buttons will turn
off. This behavior allows the AV-452
front panel to show the current status
of external video switching.
Parameter 17 - AUX IN Type:
This controls the logic of the AUX
INPUT. If the AUX INPUT is set to be
an audio only source, it will not
change the video routing when AUX
IN is selected. However, if AUX
INPUT is set to be an A/V source,
then the AUX IN video source is
routed. This switch is a read only
control.
CASS
CD-RW
VCR
DVD
AUX
AUDIO IN:
AV SOURCE
SELECT SW
REC MONITOR SW
TO AV
CH STRIP
AUDIO OUT:
CASS
CD-RW
VCR
Parameter
#11
Parameter
#5
AV CHANNEL
SOURCE SEL
