Contemporary Research ATSC+SDI - Manual (Page 24)

Contemporary Research 24 ATSC+SDI HDTV Tuner
Response Strings
Response Strings
Typical: [Attention] [Unit#] [data ...data] [cr] [lf]
232-ATSC+SDI status response strings contain ASCII characters similar to those used for the same functions
in command strings. An ASCII 'carriage return' and ‘line feed' follow each response string. Functions shown
as N/A are not applicable or available in the 232-ATSC-SDI; characters will appear in status strings as lower-
case x.
Channel/Source Status Response String (T):
Start # CMD Power Major
Channel
Video
Mute
Input RF Received
Resolution
Minor
Channel
NA Function
1-9 U=On
M=Off
3 digits Un-
muted
0=RF A=Air
C=Cable
0=1080i
1=720p
2=480p
3=480i
N=No Sig
3 digits 0=None
< 1 T U 032 U 0 A 0 002 x 0
For compatibility with 232-series tuners, the 232-ATSC+SDI channel status is split into Major Channel and
Minor Channel sections. The Minor Channel will always be 000 for analog channels. The Minor Channel
status will display “F00” if the Major channel is a special “one-part” digital channel. Also, as one-part
channels can go higher than 999, the Minor status will tell you how many thousands (up to 63) you add to
the Major number. So, channel 1032 would show 032 Major F01 Minor. Two-part channels are limited to
999-999.
Audio Status Response String (V):
Start Unit CMD Power Volume 1 Volume Mute Stereo Volume 2
1-9 U=On
M=Off
0-63
Emulated level
2 digits
U=Unmuted
M=Mute
N/A 0-100
Actual level
3 digits
< 1 V U 63 U x 100
Volume 1 emulates 232-series volume level for compatibility with existing applications.
Volume 2 shows actual 232-ATSC+SDI level, from 0-100 steps. Mute status will be sent if a user mutes
volume from an IR remote.
Front Panel Mode Status Response String (S):
Start Unit CMD Audio Tune
Mode
Lockout Bass Treble Output Output
Resolution
Output
Setting
NA
1-9 N/A 0=Cable
1=Air
2=IRC
3=HRC
3=Auto
0-7 Fixed
2 digits
Fixed 0=RGB
2=YPbPr
0=1080i
1=720p
2=480p
3=480i
0=1080i
1=720p
2=480p
3=480i
4
digits
< 1 S x 1 0 08 4 2 0 0 xxxx
Current Ratio is the actual output ratio; Ratio Mode is the selected mode (see chart on page 9)
Q Mode Response String (Q):
Start Unit CMD Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 NA
1-9 CC
0=Off
1=On
CC
Type
1-8
Video
Detect
(fixed)
AV
Detect
(fixed)
Label
(fixed)
IR
0=Off
9=Normal
1 digit Digital
CC 1-6
2 digits
< 1 Q 1 1 3 0 2 9 0 1 xx