valutazioni - 3, GPA: 4
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Facilità d'uso
Error performance (ITU-T G.821, G.826, M.2100) is available with various pseudorandom patterns and user patterns up to 1024 characters. Frame Relay measurement function, ISDN signaling function (optional), and a simultaneous two-channel monitoring function are also provided. Single button “quick” function and touch-screen ensure easy operation. This unit offers the user sophisticated functions required for installation and maintenance in a small compact unit. Features • One unit supports installation and maintenance of leased lines, ISDN, and frame relay • Single button quick test operation • Lightweight, with a battery-operated function Applications • Many applications ranging from low-speed modems to high- speed digital lines The MD6430A can evaluate the quality of lines ranging from low-speed modems to high-speed digital lines spanning 50 bit/s to 10 Mbit/s. • Support for various interfaces The MD6430A supports G.703 64k, I.430/I-430a 192k, G.703/G.704/ I.431 1.5M, 2M, 2M CMI, 6.3M, V.24/V.28, V.35, V.36, RS-449, X.20, X.21, TTL/CMOS interfaces in a number of optional units designed to meet customer needs. Units Interfaces Uses MU643000A G.703 64k, I.430/I430-a 192k, G.703/G.704/I.431 1.5M, G.703/G.704/I.431 2.0M, 2M CMI, G.703/G.704 6M Europe and Japan MU643000B G.703 64k, I.430/I430-a 192k, G.703/G.704/I.431 1.5M, 2M CMI, G.703/G.704 6M Japan MU643000C G.703 64k, I.430/I430-a 192k, G.703/G.704/I.431 2.0M Europe Note: All interface units support V.24/V.28, V.35, V.36, RS-449, X.20, X.21, and TTL/CMOS. • Wide variety of measurement functions Various measurements, such as error, alarm, clock slip, delay, frequency, and digital level can be performed. Also, can send user patterns with tracing functions. • Frame relay measurements Frame relay network connections (conforming to PVC and ITU-T Q.933 Annex A) can be tested by the MD6430A. The user can also monitor the congestion status such as FECN, BECN, and CLLM. • Optional ISDN signaling functions (BRI, PRI) The unit can be connected to ISDN networks so that both voice communication and error measurement can be performed. • Error data analysis and storage functions Error data can be collected in log or histogram format. This data can also be stored in internal memory or on a floppy disk for later analysis. • Touch-screen The touch-screen, large color LCD, and pop-up menus provide a much better GUI operating environment. • Battery operation When a commercial power supply is not available, the optional battery pack provides operation for up to 3 hours, and 5 hours in power save operation. • Full range of error measurement screens Various measurement items can be displayed simultaneously for error count, error rate, block error count, clock slip count, character error count, error performance (G.821, G.826, M.2100), HDLC error (bad frame, abort frame), and various types of alarms. The user can select the desired items and can display them using the zoom function. 217 IP/NETWORK MEASURING INSTRUMENTS • Supports frame relay measurements Specific DLCI connections can be checked. PVC status checking procedures are supported. MD6430A MD6430A Call request Call Data acceptance Data Clear request Clear confirmation Frame relay measurement sequence • Substantial analysis functions Error status and alarm condition can be logged and displayed as histograms. The received data can also be captured. • Supports ISDN networks (BRI, PRI) The unit can be connected to the ISDN public telephone network. Return testing using one unit can be done by using the call loop function as below. • Voice channel function The CODEC function permits voice communications over a specified channel. Simultaneous voice communications and measurements are possible. • Easy operation The touch-screen and pop-up menus are quick and user-friendly, making operation easy for all levels of expertise. IP/NETWORK MEASURING INSTRUMENTS Specifications Interface High speed: G.703 64k, I.430/I430-a 192k, G.703/G.704/I.431 1.5M.1, .2, G.703/G.704/I.431 2.0M.1, .3, 2M CMI.1, .2, G.703/G.704 6M.1, .2 (2-wire simultaneous monitoring) Low speed: V.24/V.28, V.35, V.36, RS-449, X.20, X.21, TTL/CMOS (Send/receive simultaneous monitoring) Clock (high-speed interface) Internal clock: 64 kbit/s, 1.544 Mbit/s.1, .2, 2.048 Mbit/s, 6.312 Mbit/s.1, .2 (accuracy .±5 ppm) External clock: 64k + 8k or slave sync to received data (slave oscillation range: .±100 ppm) G.703 64k clock mode Centralized clock, codirectional clock Code law (high-speed interface) G.703 64k: AMI I.430/I430-a 192k: AMI G.703/G.704/I.431 1.5M: AMI/B8ZS.1, .2 G.703/G.704/I.431 2.0M: AMI/HDB3.1, .3 2M CMI: CMI G.703/G.704 6M:B8ZS.1, .2 Impedance 64k: 110 ./HIGH, 192k: 50/100 ./HIGH, 1.5M:100 ./HIGH, 2 M:75/120 ./HIGH, 2M CMI: 110 ./HIGH, 6M: 75 ./HIGH Frames (high-speed interface) G.703/G.704/I.431 1.5M.1, .2: 12MFP (G.704), 24MFP (G.704), 24MFP (NTT), unframe G.703/G.704/I.431 2.0M.1, .3: 16MFP (30B + D), 16MFP (3...