GW Instek 82PM-82120MB, Руководство пользователя

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POWER METER
USER MANUAL
17
z
PT Ratio setting
1) Press the button of [VPT] to appear the letters of PT on the window 2,
window 3 indicates the previous setting parameter, and window 1
appears
"————"
. If no further action, it will return to previous test
mode within 5 seconds, or press [
Å
] key directly.
2) Then proceed the following steps to set the desired parameters, such as
1000:
— Press [1] to appear 1---.
— Press [0] to appear 10--.
— Press [0] to appear 100-.
— Press [0] to appear 1000.
3) If there is any mistake, press [
Å
] key to erase front error numbers.
4) After pressing [ENTER] to save the information, return to test mode.
z
CT Ratio setting
1) Press the button of [ACT] to appear the letters of CT on the window 2,
window 3 indicates the previous setting parameters, and window 1
appears
"————"
. If no further action, it will return to previous test
mode within 5 seconds, or press [
Å
] key directly.
2) Then proceed the following steps to set the desired parameters, such as
1000:
— Press [1] to appear 1---.
— Press [0] to appear 10--.
— Press [0] to appear 100-.
— Press [0] to appear 1000.
3) If there is any mistake, press [
Å
] key to erase front error numbers.
4) After pressing [ENTER] to save the information, return to test mode
POWER METER
USER MANUAL
18
6. RS232 COMMUNICATION INTERFACE
z
Introduction
The instrument can be operated from a host (eg. A terminal controller,
computer, PLC…) by sending commands through a computer interface on
the rear panel.
z
Communication parameter
Baudrate : 1200, 2400, 4800, 9600 bps.
Parity : None
Data bits : 8
Stop bit : 1
z
Wire drawing
：
Located in the rear panel of GPM-8212.
RS-232 RS-485
Pin 232:
SIGNAL CD RXD TXD DTR GND DSR RTS CTS RI
9 PIN 1 2 3 4 5 6 7 8 9
25PIN 8 3 2 20 7 6 4 5 22
Pin 485:
SIGNAL NC
TxD
-
TxD
+
RxD
+
RxD
-
NC NC NC NC
PIN No. 1 2 3 4 5 6 7 8 9