ST350A/ST350C 2M Transmission Analyzer

Digital Transmission Analyzer integrates many advantages of several kinds of imported 2M meters.

ST350 2M Digital Transmission Analyzer (E1 Tester)

 

ST350 meter is PCM2M integrated test handset, mainly used to measure the code error rate of communication line data and analyze the line fault as well as the causes. It can realize the measurement of 2M series N*64K channel transmission parameters and the daily maintenance test.

Powerful functions are your great assistant. Volume adjustable, loudspeaker can be used. English/Chinese interface makes your work much simpler and easier. Multi-tasks work facilitates your test.

 

 

Main Functions1. Out-of-Service measurement 2. In-Service measurement 3. Framing and unframed signal transmit and receiving 4. 2Mbit/s unframed measurement 5. 2Mbit/s framing n*64 Kbit/s measurement 6. Measurement for frame error (FAS ERR), BIT ERR, CRC-4 Error, Code Error (COD ERR), E-bit Error (E-ERR) 7. Clock slip measurement 8. Measurement for signal loss (SIG LOSS), AIS, frames loss (FAS LOSS), pattern loss (PATT LOSS), remote alarm (RA), multi-frame remote alarm (MRA) 9. Line signal frequency measurement 10. Level and frequency measurement of voice channel 11. SMF set and display 12. ABCD set and display 13. Through measurement 14. RT delay measurement 15. Timeslot monitor 16. Three Tx Clock Options (Internal, external, and recover from the received signal) 17. Three Inputs Mode: Terminal, Bridge, Monitor 18. G. 821, G. 826, M. 2100 performance 19. Graphs results of alarm and error20. RS232 printing 21. Built-in memory prevents data loss when power off 22. Connect to PC 23. 7 setup storages and 436 results storages 24. Bi-directional Listen, dual E1 Measurement 25. Tx Clock offset function 26. Online software update 28. Measurement for co-directional 64k, V. 35 Synchronization29. Pattern Slip (PAT SLIP) measurement 30. APS (Auto Protect System) Time Measurement31. Dual-frequency departure measurement

 

Technical Specifications  

 

TX
Output interface	75 Ohm balanced, 120 Ohm balanced, conforming to G.703 requirements
Signal structure	Unframed Frame (PCM30, PCM31, PCM30CRC, PCM31CRC), conforming to G.704 n×64 Kbit/s structure
Line code	HDB3 or AMI
Signal rate	2048 kbit/s
Internal clock accuracy	<±10ppm
Clocking	Internal, external and distill
Output intrinsic twittering	<0.05UI(20Hz-100kHz)
Test pattern	False random sequence 2E6-1,2E9-1,2E11-1,2E15-1, 2E20-1, 2E23-1, conforming
Free TS pattern:	8bit man mode
Code error insertion	FAS ERR: once, continuous twice, continuous 3 times, continuous 4 Times BIT ERR: single 1E-2~1E-7
Pattern slip	PAT slip
RX
Signal input impedance	terminal: 75 Ohm unbalanced, 120 Ohm balanced, Tx loss conforms to G.703 bridge: > 750 Ohm unbalanced, > 1200 Ohm balanced monitor: 20 dB for input sensibility
Signal input equalizing feature	0—9 dB
Signal input twittering capacity	conforms to G.823
Input anti-interference	conforms to G.703
Signal structure	Unframed Frame (PCM30, PCM31, PCM30CRC, PCM31CRC), frame signal conforms to G.704 n×64 kbit/s structure
Line code	HDB, or AMI
Signal rate	2048 kbit ±50ppm
Test pattern	False random sequence 2E6-1,2E9-1,2E11-1,2E15-1, 2E20-1, 2E23-1 conforming to ITU-T0.151, man code 8 bit
Frequency test	For line signal and voice channel signal
Level test	For line signal and voice channel signal
Bit error monitoring	FAS ERR, BIT ERR, CRC-4 code error performance test, CODE ERR
Alarm monitoring	AIS, SIG LOSS, RA, MAR, FAS LOSS, CRC LOSS, PAT LOSS, PAT SLIP
Slip monitoring	PAT SLIP, CLK SLIP
Time delay test	Test time delay performance
Bit error analysis	G.821, G.826, M2100
External clock input impedance	Terminal: 75 Ohm unbalanced, 120 Ohm balanced, Tx loss conforming to G.703 Bridge: > 750 Ohm unbalanced, > 1200 Ohm balanced
External clock input signal	HDB3/AMI conforming to G.703, pulse signal,> 2.5Vp-p
Other Specifications
Battery Duration:	5hs (except Modem status)
Dimensions/Weight:	200mm×160mm×42mm/0.9kg(With battery)

ST350A/ST350C 2M Transmission Analyzer