Transmitter RCU (Remote Control Unit)
R791664
Date: 16/11/97 R791664
6
Technical info-2
Command table of the infrared transmitter IC SAA 1250 (continu)
Command
Input code
Option III
Free Address Selection
No
a b c d e f g h
A B C D E F G H Address 10
OA and OB to L potential
S17 1
x
x
Address 1
S18 2
x
x
Address 2
S19 3
x
x
Address 3
S20 4
x
x
Address 4
S21 5
x
x
Address 5
S22 6
x
x
Address 6
S23 7
x
x
Address 7
S24 8
x
x
Address 8
S25 9
x
x
Address 9
S26 0
x
x
Address 10
S27
S33 Address
x
x
FAS OFF
S41 Contr+
x
x
S42 Contr -
x
x
S43
x
x
S44 Bright -
x
x
S45 Sat+
x
x
S46 Sat -
x
x
S47 Tint+
x
x
S48 Tint -
x
x
S55 Sharp+
x
x
S56 Sharp -
x
x
Operational mode
According to Table above, the SAA 1250 operates in two modes, which are determined via the OA and OB address
input (see table on preceding page).
The first command is given about 20ms after contact actuation. All following commands are sent periodically every
130 ms.
Address bits
Control bits
Start pulse
Stop pulse
Preliminary pulse
Complete Command
0
1
0
1
1
0 0
1
0
0
The signals are transmitted by means of
infrared light in the shape of packages
pulses. For the transmission of a 10-bit word,
14 pulses are required. The binary
information of a bit is contained in the time
interval between two pulses. We define the
time T (approx. 100us) as the basis for the
code to be employed.
Duration T = binary digit "0"
Duration 2T = binary digit "1"
Spacing between preliminary pulse and start
pulse 3T.This is followed after a 1T by the 11
data pulses and terminated after a 3T interval
by the stop pulse.
Summary of Contents for GRAPHICS 1209S
Page 4: ...BARCO PROJECTION SYSTEMS GRAPHICS 1209S 90 00972 230V AC 90 00977 120V AC SAFETY NOTICE...
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