Sekonic SR-450, Operating Manual

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2. Direct-under type
3. Mark-to-mark type
(Read blank space of front end)
R
R 2nd column
R 1st column
Approx. 2.5mm
Descriptions of each read timing format ("R" refers to the read area)
1. Timing control type
d
R
R = d x m
m = Specified multiple (fixed at 3)
d = Timing mark width
[Descriptions of each control type]
9.Control Commands
-5 DC3 Command (Read Line Specify Command)
[Explanation]
This command is for specifying the number of lines of data to be read. When the DC3 command is
executed, the set value remains until the device is reset or the power is turned off.
When the power is turned on or the device is reset, the number of lines will become the value set to
the DIP switch, and when the DC3 command is executed, the priority will be given to the software.
[Format]
DC3 N1 N2 CR
(13H) (0DH)
The value of N1N2 determines the number of lines of data to be read.
N1N2 = 12 : Data is read assuming the number of lines as 12.
N1N2 = 15 : Data is read assuming the number of lines as 15.
(The modes in which the 15-line format is available are C, CA, D, E, EA, ED, ES and F modes.)
-6 DC3 L Command (Read Line Area Setting Command)
[Explanation]
This command is executed together with any of data read commands such as E, EA, ED and ES. This
command is for specifying the read area of each line and the range of line whose density is compared.
The setting of this command is not stored.
The initial value after the power is turned on is set for each column (as 12 lines or 15 lines).
Note :
When executed together with any of the E, EA, ED or ES command, this command can
specify square areas.
[Format]
DC3 L N1 N2 M1 M2 CR
) H D 0 ( ) H C 4 ( ) H 3 1 (
The values of N1N2 and M1M2 determine the range of lines to be read.
N1N2 : Read starting line counted from the timing mark side.
M1M2 : Number of lines to be read.
Note:
9.Control Commands
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