• Designed for lining-up, monitoring and measurements in digital PDH transmission systems having E1 interface with transmission rate of 2048 kb/s and analog channels terminations.

• Contains two receivers and two transmitters of E1 stream, oscillator and analog signals measuring device.

• Receivers and transmitters form two equal E1 interfaces (“A” and “B” directions) over each of them tester can be connected to the equipment under measurement as on-coming device, transit device or can be used for monitoring via high impedance input.

• Checking E1 stream receivers for durability for clock frequency changes and jitter, validity of transmission, alarms and errors diagnostics functioning, passing the signals through the channels.

• Possibility of each E1 stream transmitter working in master mode from own oscillator or in slave mode with synchronization from any direction, “A” or “B”, receiver.

• Possibility of measuring the parameters of voice channels and channels forming equipment of receiving and transmitting sides in “digital-analog” and “analog-digital” modes and also full TFC channels in “analog-analog” mode.

• Power supply from mains AC (220 +22/-33) V, 50,0±2,5 Hz via adaptor, complete with tester.

Long term monitoring of communication quality in timer mode in two directions simultaneously with counting the amount of errors (bit, code, cycle synchro signal, CRC-4 of near end, CRC-4 of far end and registration of following alarm signals:

• absence of incoming signal (LOS);

• loss of cycle synchronization (LOF);

• loss of super cycle synchronization (LOM);

• alarm signalization signal (AIS);

• cycle signalization alarm at far end (FRTA);

• super cycle signalization alarm at far end (МRTA).

Reports on following abnormal events per M.2100 using any kind of registered errors:

• US – amount of seconds of unreadiness;

• AS – amount of seconds of readiness;

• ES – amount of seconds with errors;

• ESR – error coefficient per seconds with errors;

• SES – amount of seconds affected by errors;

• SESR – error coefficient per seconds affected by errors;

• BBE – amount of blocks with background errors;

• BBER – error coefficient per blocks with background errors.