BOXLIGHT PRO80S3, Руководство пользователя

Страница: 18 / 33

BOXLIGHT PRO80S3 Projector Preliminary User’s Manual
Page 18 of 33
DGAMMA
Download to De-gamma Mailbox DGAMMA
Download de-gamma tables to the formatter’s degamma mailbox. DGAMMA takes three parameters. The first is a single
letter (r, g, b or a) specifying which formatter (or all of them) gets the table. The second is also a single letter (b or w)
specifying whether the table is formatted as bytes or words (16 bits). The last is a decimal parameter which specifies the
number of entries (1/2 the total number of bytes). Valid values for this parameter are 256, 512, 1024, or 2048. After the
command is issued, the user will be prompted to send the table as a series of hexadecimal bytes or words. Each entry is
16 bits. If byte mode is selected, send the LSB first. The table can be formatted rather loosely. Any ASCII character less
than ‘0’ (3016) is treated as a terminator. Any number of terminators may be inserted between values so the table can be
a single column of values separated by “newlines” or a column of comma separated values or even a string of hex digits
without any terminations as long as leading zeros are included with each byte or word.
If all formatters are to be loaded, a prompt will be issued after each successful download and a total of three separate
tables will have to be sent.
Syntax: dgamma {r|g|b|a} {b|w} {256,512,1024,2048}
> dgamma
Invalid De-Gamma Destination
> dgamma b 256
Data Size must be 'B' or 'W'
> dgamma b b 256
De-Gamma Download to BLUE FormatterXMIT EXACTLY 512 bytes of hexadecimal data
FPOL
Film Projector Interlock FPOL
The film projector interlock feature operates in two modes:
lockout mode and power control mode. FPOL takes either one
or no parameters.
In
lockout mode the film projector interlock circuitry senses current in the External Interlock connector that is attached to
the Feature Film Projector. The lockout, when active, closes the shutter on the
E-Cinema Projector and puts its formatters
in CURTAIN mode and prevents the shutter from being re-opened until the lockout becomes inactive. Depending on the
installation, the Feature Film Projector could be active or inactive when a voltage of about 5 volts is applied to the External
Interlock connector. FPOL sets or toggles the polarity of the sensing circuitry between
active-when-energized [FPOL 0]
and
active-when-not-energized [FPOL 1]. The unit is shipped with the polarity set to 0 [active-when-energized] so that if
the interlock is not connected, the projector will not be locked out. There is a way to override the lockout by depressing the
right side of the Power/Shutter rocker switch for more than 5 seconds.
In
power control mode [FPOL 2], the polarity is nor selectable. When the External Interlock connector is energized – a
voltage of about 5 volts is applied – the projector will turn on and will remain on until the voltage is removed. The shutter
will automatically open at completion of the power-up sequence whether or not there is any active video.
If the projector is in power
control mode, to take it out of this mode attach a terminal to the serial port and type:
fpol 0 [ set lockout
active-when-energized] or
fpol 1 [ set lockout
active-when-not-energized]
Typing fpol without a parameter will have no effect.
If the projector is in
lockout mode:
fpol [ toggle lockout polarity: 0 Þ 1, 1 Þ 0] or
fpol 0 [ set lockout
active-when-energized] or
fpol 1 [ set lockout
active-when-not-energized] or
fpol 2 [ set
power control mode]
The polarity parameter is stored in EEPROM and once established it is not necessary to set it again.