Major Features • LCD large-screen display, 320*240 lattice, backlight, LED indicator • Hand held, auto configuration • Multi-task operation at one time • Store 20 test results and 9 test configurations, with power-off memories • PC operation, store, analysis, print • Programmable timer • Alarm and histogram analysis • Software updating Major Functions For 2Mbit/s: • Service-interrupted error testing • Online error testing • Framed and unframed signals generation and reception • 2Mbit/s unframed error performance testing • 2Mbit/s framed N×64kbit/s channel error testing • Bit error, coding error, frame error, CRC error and E bit error testing • Signal loss alarm, AIS alarm, framed remote alarm, multi-framed remote alarm, out-of-frame, and pattern loss alarm • Frequency offset testing • Line signal level and frequency testing • Voice channel signal level and frequency testing • Pattern slip testing • Clock slip testing • Straightforward signaling • Audio frequency testing • Loop circuit delay testing • Automatic protection switching time testing (APS) • Clock bias function • Sound monitoring • Duplex 2Mbit/s detecting and monitoring • Signal state display. Voice channel content display. Voice channel busy indication • Alarm and error histogram analysis • Time slot content analysis, drop and insert signal on each time slot • Framed content analysis • G.703 module analysis • G. 821/G. 826/M. 2100 error analysis • Multi error and alarm inserting • Three input modes (terminating, bridging and monitoring) • Three clock options (internal, external and picking-up); For Datacom: • V.24/RS232/V.28, V.35, V.36, X.21, RS-449, RS-485, RS422, EIA-530, EIA-530A datacom testing • SYNCH and ASYNCH testing • DTE and DCE emulation • Bit code testing • Pattern slip testing • Signal loss alarm • Line signal level and frequency testing • Loop delay testing • Automatic protection switching time testing(APS) • G.821, M2100 service interrupt error testing For co-directional 64Kbit/s: • Service interrupt error testing • Bit code testing • Pattern slip testing • Signal loss, AIS alarm • Line signal frequency testing • Loop delay testing • Automatic protection switching time testing(APS) • G.821, M.2100 error testing Technical Index • 2Mbit/s Technical Index (1) Signal input rate: 2048kbit/s ? 100ppm (G.703 requirement±50PPM) (2) Signal code: HDB3, AMI. (3) Input jitter tolerance: Up to the requirement of Figure 10.1. Fig.10.1 Input Jitter Tolerance (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: 75? Balance terminating: 120? Reflection loss >18dB within 50Hz~3100kHz (5.2) Unbalance bridging: >750? Balance bridging: >1200? (5.3) Unbalance monitoring: 75?, 26dB gain Balance monitoring: 120?, 26dB gain Reflection loss >18dB within 50Hz~3100kHz (6) Signal structure (6.1) Unframed structure (6.2) Framed structure: PCM30, PCM31, PCM30CRC, PCM31CRC Framed 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) Unbalance 75?, up to G. 703 (8.2) Balance 120?, up to G. 703 (9) External clock input (9.1) Signal form: HDB3, NRZ (9.2) Balance terminating resistance: 120? Unbalance terminating resistance: 75? Balance bridging resistance: >1200? Unbalance bridging resistance: >750? (10) Error code insertion: None, single, or ratio 10-1~10-7. • Co-directional 64k Technical Index (1) Signal input rate: 64kbit/s ? 100ppm(G.703 requirement±100PPM) (2) Input impedance: Balance 120?, up to G.703 (3) Input jitter tolerance: Up to G.823. (4) Impedance of output interface: Balance 120?, up to G.703 (5) Testing pattern: 26-1, 29-1, 211-1, 215-1, 220