Tempo Communications Telephone tester Tempo Communications COMPACT DSP Telecom

Fully-featured test telephone at a bargain price. Compact DSP (Digital Service Protection) was developed to ensure correct operation on lines where digital signal/mains/remote supply/error voltages can be produced by faulty or crossed wires. When you connect this device to a line that is carrying a voltage over 75 V/DC (analog systems are supplied with a voltage of 24 V to 66 V), an alarm signal is sounded (digital voltage alarm). This indicates that the line is digital and not analogue. The integrated m...