AVT Titan, Руководство оператора

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6 – 1 4 4 040 7448 329657 (04.97) PC-SW 4.5
C H A P T E R 6 : T T L I N T E R F A C E A P P L I C A T I O N S
6.3 Command mode
To use this operating mode, set the CMD operating mode under SYS
→
IFACE
→
CTRL
→
TTL.
The TTL interface can then be used to read the following statuses and execute
the following functions:
Note Please note that the signal edges (changes from “0” to “1” or
vice-versa) are evaluated. If the logic level “0” is present at pin
10 of the interface when the system is switched on, then the
PIP is not so switched off. Only when a signal level change
from “1” to “0” is detected will the PIP be switched off.
The pins shown with
in the table indicate a
system status.
TABLE 6.1 FUNCTIONS OF THE TTL INTERFACE IN THE COMMAND MODE
Socket: TTL (SUB-D 25-pole)
Pin Signal Function
Level
“1” (+ 5 V) “0” (0 V)
1
STROBE Out
2
DATA 0 Out Alarm present
a
a At present, loss of frame for 2-Mbit/s connections
no yes
3
DATA 1 Out
4
DATA 2 Out
5
DATA 3 Out
6
DATA 4 Out
7
DATA 5 Out
8
DATA 6 Out
9
DATA 7 Out Picture is transmitted yes no
10
ACK In PIP ON OFF
11
BUSY In
Graphics picture:
Transmission of a
single picture
(single shot)
Start
12
PE In Graphics codec input CVBS RGB
13
SELECT In
Graphics picture:
Transmission of a
continuous picture
(send continuous)
b
b not yet available
Start
14
FEED XT In / Out Graphics picture preview
15
ERROR In
Input
Motion video codec
CVBS1 CVBS2
16
RESET Out Graphics picture received yes no
17
+5V/50 mA Out
18
USER 0 In / Out Automatic call via ISDN
c
c The calling numbers and equipment configuration is taken from the first entry in the inter-
nal calling number list that begins with “0 ” (zero + space).
Set up
(Call)
(Disconnect)
19
USER 1 In / Out
20
USER 2 In / Out
21
USER 3 In / Out
22
USER 4 In / Out
23
USER 5 In / Out
24
USER 6 In / Out
25
GND
ITG[ DCEMITQWPF