GW Instek GPI-700A Series Programming Manual - Manual (Page 4)

GPI/GPT SERIES PROGRAMMABLE EST
PROGRAMMER MANUAL
⎯ 5 ⎯
Notes for RS232 installation
The EST is a DTE device with a 9-pin D-type shell RS232 connector
located on the rear panel. Figure 1 shows the equipment of 9-pin
connector (male) with its pin number assignments. Figure 2 shows the
wiring configuration for DB9 to DB9. When the programmable EST is
set up with a RS232 interface, please check the following points:
z Do not connect the output line of one DTE device to the output line
of the other.
z Many devices require a constant high signal on one or more input
pins.
z Ensure that the signal ground of the equipment is connected to the
signal ground of the external device.
z Ensure that the chassis ground of the equipment is connected to the
chassis ground of the external device.
z Do not use more than 15m of cable to connect devices to a PC.
z Ensure the same baud rate is used on the device as the one used on
PC terminal.
z Ensure the connector for the both side of cable and the internal
connected line are met the demand of the instrument.
1. No connection
2. Receive Data(RxD) (input)
3. Transmit Data(TxD) (output)
4. No connection
5. Signal Ground(GND)
6. No connection
7. No connection
8. No connection
9. No connection
Figure 1 Pin assignments of the RS232 connector on the rear panel for DB-9-D
GPI/GPT SERIES PROGRAMMABLE EST
PROGRAMMER MANUAL
⎯ 6 ⎯
Figure 2 Wiring configuration for DB9 to DB9
Computer’s Connection
A personal computer with a COM port is the essential facilities in order
to operate the programmable EST via RS232 interface.
The connections between EST and computer are as follows:
I. Connect one end of a RS232 cable to the computer.
II. Connect the other end of the cable to the RS232 port on the
programmable EST.
III. Turn on the programmable EST.
IV. Turn on the computer.
EQUIPMENT
(DB9, DTE)
COMPUTER
(DB9, DTE)
Pin2
Pin3
Pin5 Pin5
Pin3
Pin2