Extron Electronics MVC 121 - Manual (Page 33)

MVC 121 • Remote Control 3-7
Command
ASCII Command
Response
Additional description
(host to controller)
(controller to host)
Update firmware
Upload firmware
Esc
Upload
Go
See Note below
.
Upload success
U
P
L
See Note below
.
Firmwar
e updates will periodically become available on the Extr
on W
eb site. T
o update the firmwar
e, first download the
update file fr
om the site. Then open HyperT
erminal and type the
Esc
Upload
command. After r
eceiving the Go
r
esponse,
select Send T
ext File fr
om the T
ransfer menu. In the Send T
ext File window
, locate and select the file you downloaded and
click Open. The controller will send the UPL
response once the update has been successfully completed. It will send the
error code E23 if the update failed.
Query software version
Query software version**
Q
/
q
X7
Show the MVC’s firmware version.
System reset
Reset to factory default
Esc
ZXXX
Zpx
Note:
factory default should be as follows:
Master output volume:
X1
= 50 (-30 dB).
All input volume:
X5
= 0 dB.
Gain/volume adjustment note:
All front panel gain/volume adjustments are in
0.5 dB
increments whenever the knobs are turned
slowly
. However
, the SIS messages (RS-232) that the MVC sends to the host ar
e in
1 dB
increments
only
. The MVC treats each 0.5 dB gain/volume increment between two consecutive
whole dB units as the lower of the two units. As shown in the table examples, in a continuous adjustment sequence, the SIS messages to the host will send the same value twice.
V
o
lume
Chang
e
SIS Messa
g
e
to Host
51.0 51.5 52.0 52.5 53.0
. . . .
. . . .
. . . .
. . . .
Vo
l 5
1
Vo
l 5
1
Vo
l 5
2
Vo
l 5
2
Vo
l 5
3