Pioneer HD VIDEO SYSTEM HD-V9000 User Manual

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09
Chapter 9
Communications/Control
Serial interface 
specifications
This unit is equipped with a serial control interface 
conforming to RS-232C standards, allowing it to be 
connected to a computer with either a 9-pin or a 15-pin 
D-Sub connector. The connector to be used can be 
switched at 
Initial Settings 
 Options  Serial Port 
(page 46).
 Caution
• It is not possible to access the 9-pin and 15-pin 
connectors simultaneously.
• Both the 9-pin connector and the 15-pin connector 
use inch screw threads.
The connectors’ pin layouts are as shown below.
15-pin D-Sub connector
9-pin D-Sub connector
Control functions
(a) Serial control
TxD, RxD and DTR
Serial control interface conforming to RS-232C 
standards.
(b) Extend terminals
SW1, SW2, SW3, SW4, SW5, SW6, SW7 and SW8
This unit can be controlled by connecting switches to the 
exterior of these pins.
(c) External power supply control
This unit’s power can be turned on and off using the 
interface connector’s power pin.
Power on/off control is not possible if operation of the 
buttons on the main unit’s front panel and remote control 
is locked.
When power is off (in the standby mode): Power 
turns on when L signal detected after H signal of 
100 msec or greater
When power is on: Power turns off (to the standby 
mode) when L signal detected after H signal of 
100 msec or greater
Pin input voltage: ±12 V or less; H signal level: 4.5 V or 
higher, L signal level: 0.5 V or lower
(d) Playback status output
This unit’s operating status (playing/stopped) can be 
detected with the interface connector’s STOP_ST pin.
“H” is output when this unit is in the stop mode, “L” when 
in the play mode. The output is an open collector, so pull 
up to a maximum of 12 V (50 mA) to use it.
Pin no.
Pin name
Input/
Output
Function
1
GND
--
ground
2
TxD
Output
send data
3
RxD
Input
receive data
4
DTR
Output
enable data receiving
5
POWER
Input
external power control
6
SW1
Input
Extend Terminal
7
SW2
Input
Extend Terminal
8
SW3
Input
Extend Terminal
9
SW4
Input
Extend Terminal
10
SW5
Input
Extend Terminal
11
SW6
Input
Extend Terminal
12
SW7
Input
Extend Terminal
13
SW8
Input
Extend Terminal
14
NC
--
NC (not connected on 
this unit)
15
STOP_ST
Output
Stop Status
5
1
6
9
1
9
15
8
Pin no.
Pin name
Input/
Output
Function
1
DCD
Input
NC (not connected on 
this unit)
2
RxD
Input
receive data
3
TxD
Output
send data
4
DTR
Output
enable data receiving
5
GND
--
Ground
6
DSR
Input
NC (not connected on 
this unit)
7
RTS
Output
Connected internally to 
CTS
8
CTS
Input
Connected internally to 
RTS
9
RI
Input
NC (not connected on 
this unit)