User Bits - Brainstorm SR-112 Owner's Manual

SR-112 User Manual (Rev 4.01)

14. User Bits

User Bits (Binary Groups) can be set to carry different information. Three bits
(Binary Group Flags) are used to define this: BGF0, BGF1, BGF2 (see appendix D
for sMPTE & EBU bit assignments).
While in the User Bits page (see 5.1), the sR-112 LCD shows the User Bits and the
BGF setting.
The table below shows the different options available and how they appear on the
display:
|^ User Bits In
|---- --.--.--.--|
|Unsp 00.00.00.00|
|8bit 55.53.45.52|
|Clk
|Rsvd 00.00.00.00|
|DtTm 00.00.00.00|
|PgLn 00.00.00.00|
|---- 00.00.00.00|
User bits are considered "unavailable" if the input time code is not in forward
playspeed mode.
The first 4 characters in each line are derived from the Binary Group Flag bits in
the time code stream. The following text from sMPTE 12M-1-2008 has the sR-112
encoding added in:
Binary group flag assignments:
BGF[2:0] sR-112
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
When the User Bits are not used, the display will show this:
|
23.59.59.29|
Time address
reference
"Unsp" Unspecified
"8bit" Unspecified
"Clk " Clock time
"Rsvd" Reserved
"DtTm" Unspecified
"PgLn" Unspecified
"DtTm" Clock time
"PgLn" Clock time
User Bits unavailable
Binary Group Flag error after too many flag changes
Binary group
Unspecified
8-bit codes
Unspecified
Reserved
Date and time zone sMPTE 309M
Page/line
Date and time zone sMPTE 309M
Page/line
Other Doc
IsO/IEC 646 or IsO/IEC 2022
sMPTE 262M
sMPTE 262M
Page 21