Extron electronic DDS 402 manual Symbols, Digital Display Scaler Programmer’s Guide

Programmer’s Guide

The scaler’s rear panel Remote 9-pin D female connector (figure 4-1) can be connected to the RS-232 serial port output of a host device such as a computer running the HyperTerminal utility or a control system. This connection makes software control of the scaler possible.

Pin	RS-232	Function
1	—	Contact closure, input #1
2	TX	Transmit data
3	RX	Receive data
4	—	Contact closure, input # 2
5	Gnd	Signal ground
6	—	Not used
7	—	Not used
8	—	Not used
9	—	Not used

5	1	1	5
9	6	6	9
Female		Male

Figure 4-1 — Remote connector pin arrangement

The protocol is 9600 baud, 8-bit, 1 stop bit, no parity, and no flow control.

Symbols

Symbols ( Xn values), defined below, are used throughout the discussions of the switcher-initiated messages that begin on the next page and the command/ response table that begins on page 4-6. The symbols represent variables in the switcher-initiated messages and the command/response table fields.

		= CR/LF (carriage return/line feed) (hex 0D 0A)
		= Carriage return (no line feed)
•		= Space
	= Escape key
Esc
X1		= Input number (1 or 2)
X2	= Input video type:
		0	= RGB	3	= Betacam 50
		1	= YUVi	4	= Betacam 60
		2	= YUVp	5	= HDTV
X3		= Scaler resolution:
		00	= 640x480	08	= 1360x765
		01	= 800x600	09	= 1365x1024
		02	= 832x624	10	= 1400 x 1050
		03	= 848x480	11 = 576p
		04	= 852x480	12	= 720p
		05	= 1024x768	13	= 1080p
		06	= 1280x768	14	= 1080i
		07	= 1280x1024
X4	= Scaler refresh rate
		00	= 50 Hz	03	= 75 Hz
		01	= 56 Hz*	04	= 85 Hz
		02	= 60 Hz	05	= Lock
		*	1280 x 768 only

X6

X7

X8

X9

X10

X11

X12

X13

X14

X15

X16

= Output sync polarity:
00	= H–/V–	02	= H+/V–
01	= H–/V+	03	= H+/V+

=On/off status (0 = off, 1 = on)

=Brightness value (000 thru 063)

=Contrast value (000 thru 255)

=Filter value (000 thru 007)

=Blanking value (0 thru 237)

=Pixel sampling phase (00 through 31)

=RGB delay (00 to 50)

=Test pattern type (1 through 10)

000	= off	006	= alternating pixels
001	= Color Bars	007 = film aspect ratio 1.78
002	= crosshatch	008	= film aspect ratio 1.85
003	= 4x4 crosshatch	009	= film aspect ratio 2.35
004	= grayscale	010 = ramp
005	= crop

=Input configuration preset (01 through 03)

=nnn.nn where

Hrt = horizontal rate (kHz) Vrt = vertical rate (Hz)

xxx:xx means signal out of range

X5

Lock is Accu-RATE Frame Lock (AFL) — 50 Hz (PAL) or 59.94 Hz (NTSC) .

= Output video type:
00 = RGB	01 = Component (Y, R-y, B-y)

X17

= Detected input signal standard (0 through 4)

0	= none	3	= NTSC 4.43
1	= NTSC 3.58	4	= SECAM
2	= PAL	–	= not applicable

– occurs when the input is set for RGB, YUV, or progressive YUV.

4-2 Digital Display Scaler • Programmer’s Guide