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SR-112 User Manual (Rev 4.01)
8.11. MENU 99: sOFTWaRE VERsION & sERIaL NUMBER
IMPORTANT NOTE ON MENU OPERATION: Remember to always press the [
save your settings prior to exiting a menu or to exiting the sET UP mode. No change
will take place until the [
9. Reshaping and distributing time code
9.1. TIME CODE DIsTRIBUTION
9.2. REsHaPING DIsTORTED TIME CODE
9.3. TIME CODE LEVEL
9.4. sELECTING THE PROPER RIsE TIME
This menu is status only and indicates the current firmware version and the unit's
serial number.
Simply multing a time code source can cause serious problems and is not rec-
ommended. The sR-112 eliminates these potential problems by providing 12
individually buffered and balanced outputs.
On older analog tape machines (especially VTR's), time code usually has
improper rise/fall times, leading edge peaking and different amplitude levels on
"one's" and "zero's" (see diagrams below). This is due to the fact that analog
tape machines were not designed to record a signal that is basically digital.
as a result, time code could become unreadable.
The sR-112 eliminates these amplitude distortions by reshaping the code to its
original sMPTE or EBU specifications.
Level fluctuations or improper level can also render time code unreadable.
With the sR-112, each output level is individually adjustable so that optimum
levels can be sent to each reader. These levels remain constant regardless of
input level fluctuations.
Rise time limiting was specified in sMPTE and EBU to minimize crosstalk from
time code into audio. a longer rise time removes more high frequency compo-
nents from its waveform. However some equipment may not be able to read
time code if its rise time is too long.
The sR-112 has three preset rise times for its output waveform: 1µsec, 20 µsec
and 40µsec. The first one is a square wave, the third is per sMPTE and EBU
specs and the second is an intermediate value.
] key is pressed.
enter
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] key to
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