Analog Way Smart Fade - SMF251A - Manuel (Page 39)

SMART FADE™ Chapter 10 : RS-232 PROGRAMMER'S GUIDE
PAGE 39
10-5. COMMANDS DESCRIPTION (continued)
h STATUS COMMANDS (READ ONLY).
This control family is read only: it cannot be preceded by a value.
• U command returns the UNIT value, used to calculate the computer line and frame frequency.
• l command returns the Computer Line Duration (CLD value).
The following formula allows to calculate the input line frequency in kHz.
UNIT VALUE = Input line frequency in kHz.
CLD VALUE
• t command returns the Computer lines per Frame (CFD value).
The following formula allows to calculate the computer input frame frequency in Hz.
INPUT LINE FREQUENCY (Hz) = Input frame frequency in Hz.
CFD VALUE
• P command returns the Computer status. (RESPONSE : CSTA--).
Bit 5
(32)
Bit 4
(16)
Bit 3
(8)
Bit 2
(4)
Bit 1
(2)
Bit 0
(1)
0 = No sync. detected.
1 = Sync. detected.
0 = H & V sync. detected.
1 = COMP sync. detected.
0 = Non interlaced format.
1 = Interlaced format.
0 = Computer sync are not used as ref. sync.
1 = Computer sync are used as ref. sync.
0 = Computer format out of range (for reference sync.)
1 = Computer format in range (can be used as reference sync.)
0 = Fade & Title are not active.
1 = Fade & Title are active.
• c command is used to know the computer number which status is displayed.
- SMART FADE ™ ALONE APPLICATION.
DECIMAL
VALUE
SELECTION RESPONSE APPLICATION
0 NO COMPUTER CCHAN0
1 COMPUTER 1 CCHAN1 SMF251 ALONE
2 COMPUTER 2 CCHAN2
- SMART FADE ™ + SMART SWITCH VIDEO ™ APPLICATION.
DECIMAL
VALUE
SELECTION RESPONSE APPLICATION
0 NO COMPUTER CCHAN0
2 EXTEND PC 2 CCHAN2 SMF251
23 COMPUTER 1 CCHAN23 +
24 COMPUTER 2 CCHAN24 SMV415
25 COMPUTER 3 CCHAN25