LG KG271 Service Manual page 105

10. CALIBRATION
10.2.5 Setup "Line System" menu such as the following fugure
10.2.6 Setup Logic operation such as the following figure
PWR : Power Supply
CELL :Call-Test Equipment
KG278
Adjust the number of times.
KG278
Setup UART Port
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Operation Mode
1. By-Pass: not control by GPIB
2. Normal : control by GPIB