Multitask operation (It is allowed to conduct a test while browsing previous records).
As many as 9 test settings and 20 groups of test results can be stored, and kept in memory in the event of power failure. .
Communication with a PC is available to allow test data storage, analysis and printing to be carried out on the PC, or directly connected to a micro printer.
The instrument can be powered on or off at certain times for testing purpose.
Column diagram analysis of alarms and error codes;
Software updating online.
Main Functions
Service-interrupted error code testing;
Error code testing online;
Framing and non-framing signals generation and reception;
Column diagram analysis of alarms and error codes;
Time sot content analysis;
Frame content analysis;
G. 821/G. 826/M. 2100 error code performance analysis;
Several kinds of error code and alarm insertion;
Three input modes (terminating, bridging and monitoring);
Two clock options (internal and picking-up);
RS-232 interface for printing result;
Technical Index
2M Technical Index
(1) Signal input rate: 2048kbit/s±100ppm（G.703 requirement±50PPM）
(2) Signal coding: HDB3, AMI.
(3) Input jitter tolerance: Up to the requirement of Figure 10.1.
(4) Input balance response: Attenuation complies with the law of square root of frequency, and is within the range of 0 to 6dB at 1024 kHz.
(5) Input Impedance
(5.1) Unbalance terminating: 75Ω
Balance terminating: 120Ω.
Reflection loss >18dB within 50Hz.53100kHz.
(5.2) Unbalance bridging: >750Ω
Balance bridging: >1200Ω
(5.3) Unbalance monitoring: 75Ω, 26dB gain
Balance monitoring: 120Ω, 26dB gain
Reflection loss >18dB within 50Hz.53100kHz.
(6) Signal structure
(6.1) Non-frame structure
(6.2) Frame structure: PCM30, PCM31, PCM30CRC, PCM31CRC
Frame structure complies with the requirement of G. 704.
(7) Testing pattern: 26-1、29-1、211-1、215-1、220-1、223-1, and artificial code
(8) Impedance of output interface:
(8.1) Non-balance 75Ω, up to G. 703
(8.2) Balance 120Ω, up to G. 703.
(9) External clock input
(9.1) Signal form: HDB3, NRZ
(9.2) Balance terminating resistance: 120Ω
Unbalance terminating resistance: 75Ω.
Balance bridging resistance: >1200Ω
Unbalance bridging resistance: >750Ω.
(10) Error code insertion: None, single, or ratio 10-1 ~ 10-7.
Other Parameters
Power supply
(1) Special power adapter
Input: AC220V 50Hz
Output: DC 9V 1A
(2) Internal rechargeable battery
4000mAh, 6V nickel-hydrogen rechargeable battery
Working time: 8 hours
Charging: 8 hours at power-off state, and 12 hours at power-on state.
Printer: μP40-TS(CH)4 Chinese character micro-printer with standard level and serial port.
Dimension and weight
L×W×H: 200×160×42mm
Weight: 950g
