What instrument can be used to measure the resistance at both ends of a 1,000-meter communication line that has been constructed?

EEW2018

What instrument can be used to measure the resistance at both ends of a 1,000-meter communication line that has been constructed? [Copy link]

What instrument can be used to measure the resistance at both ends of a 1,000-meter communication line that has been constructed?

wenyangzeng

One end is short-circuited, and the other end can be tested with a multimeter.

maychang

Since it is communication, there must be a transmitter and a receiver. The transmitter is a signal source, and the receiver is a load. Short-circuit the load and measure from the signal source side to get the resistance of the communication line. Even the very early single-line transmission (the other line uses the ground) is measured in this way.

qwqwqw2088

The communication signal must not be transmitted in one line.

EEW2018

wenyangzeng posted on 2019-11-7 07:18 If one end is short-circuited, the other end can be tested with a multimeter

Thank you so much

EEW2018

maychang posted on 2019-11-7 07:26 Since it is communication, there must be a transmitter and a receiver. The transmitter is a signal source and the receiver is a load. Short-circuit the load and measure from the signal source side, and you get...

Thank you so much

EEW2018

qwqwqw2088 posted on 2019-11-7 08:33 The communication signal must not be transmitted in one line,,,

Thank you so much