External Control; Rs232C Specifications; Tcp/Ip Connection - JVC PK-VS4GD3G Instructions Manual

External Control

It is possible to control this unit by connecting it to a PC using an RS232C cross cable (Dsub 9pin).
The projector can be controlled by connecting it to a PC through the computer network with a LAN cable for control commands to
be sent to the projector.
● To control using the computer, connect to any one of the terminals (RS-232C, LAN or USB). Do not use the terminals at the
same time.
● Please use it after you have gained proper understanding from professional books or consulting the system administrator.

RS232C Specifications

This Unit
1 5
6 9
● PC refers to the controller, such as a personal computer.
D0 D1 D2 D3
Start bit

TCP/IP Connection

Before controlling via LAN, it is necessary to establish connection of the TCP layer by a "3way handshake", followed by sending
out "PJREQ" and receiving "PJACK" within five seconds after the projector sends out "PJ_OK" for connection authentication.
If you are unable to complete sending within five seconds, or when "PJ_NG" or "PJNAK" is received, check the operating status of
the projector, followed by performing the steps again starting from establishment of a TCP connection,
Projector
Controlling PC
14
Pin No.
2
3
5
1, 4, 6-9
D4 D5 D6 D7
Stop bit
PJ_OK
Establishment of TCP Connection
TCP Port No. 20554
3-way Handshake
Connection Authentication Procedure
Signal
RxD Receive data
TxD Transmission data
GND Signal ground
N/C —
Mode
Data bit
Parity
Start bit
Stop bit
Data rate
Flow control
Within 5 Seconds
PJACK
PJREQ
Function Signal Direction
PC B This unit
This unit B PC
—
—
Asynchronous
8 bit
None
1
1
19200 bps
None
Projector Control