Features ａnd Benefits

• STM-0, STM-1, ａnd STM-4 Transmit ａnd Receive
• STM-16 Transmit ａnd Receive （with ST2400A）
• VC4-4c Concatenated Payload Testing
• 2, 8, 34, ａnd 140 MBps PDH Mux/Demux with N/M × 64 Kbps Testing
• 45 MBps （DS3） Mapping/Demapping
• Complete Jitter ａnd Wander Tests at All Equipped Line Rates from 2 MBps to 622 MBps in One Option Plus 45 MBps. Exceeds New ITU-T O.172 Requirements
• Real-Time Wander Analyst Application Software for MTIE, TDEV, Frequency Offset, ａnd Drift-Rate Measurements
• Performance Analysis per G.821, G.826, G.827, M.2100, ａnd New M.2101.1
• Full-Band Jitter Measurements to 0.1 Hz with Variable Highpass Cutoff Frequencies
• Pointer Analysis ａnd Test Sequences per G.783
• SDH/PDH Defect Generation ａnd Analysis
• Manipulation of K1/K2 Bytes for MSP/APS Testing
• Field-interchangeable 1310 nm ａnd 1550 nm Optical Interfaces
• AutoScan with Graphical Display of Signal Format ａnd Payload
• Histogram Results, Correlated Alarms, Defects, Errors, ａnd Events to 1-Second Resolution
• Pass/Fail Tests Saved ａnd Recalled by Using a Floppy Disk
• Exclusive New Measurements for Digital Video Network Characterization

Applications

• Network Integrity Testing
• Mapping/Demapping
• MSP/APS Testing

Supports New ITU-T O.172 Conformance Test Set

The CTS850 is a versatile analyzer for Broadband Network Testing. It has a powerful, yet uncomplicated, menu structure which allows both the novice ａnd expert user to accurately configure measurements on SDH ａnd PDH networks very quickly. All measurement connections are conveniently located directly on the front panel close to the signal status LEDs ａnd easy-to-read display.

A field-interchangeable optical module ａnd a floppy disk drive for retrieval of stored setups ａnd results complete the front-panel layout to create a "field-friendly" instrument.

SDH/PDH/Jitter ａnd Wander Testing

The CTS850 creatively addresses growing concerns surrounding hybrid SDH/PDH networks in the area of timing ａnd synchronization. Its industry-leading, DSP-based, Jitter ａnd Wander measurement capability provides a high 300 UI jitter measurement range, handles all line rates from 2 MBps to 622 MBps through existing front-panel connectors ａnd introduces exclusive new measurements for digital video services.

The CTS850 unlocks the power of the SDH frame structure by combining bit error testing with overhead analysis ａnd payload mapping ａnd demapping. It provides read/write access to overhead bytes, DCC add/drop, ａnd complete G.783 pointer test sequences.

The CTS850 is optimized for installation ａnd maintenance of both current ａnd future SDH networks. Additional functionality, reflecting evolving standards such as new O.172, can be downloaded through the built-in disk drive.

One of the CTS850＇s many powerful functions is error analysis ａnd display. In addition to simple error counts ａnd rate determination, the CTS850 makes measurements according to G.821, G.826, G.827, ａnd new M.2101.1 performance analysis ａnd M.2100 error analysis so that network quality of service can be fully verified in or out of service.

Histograms boost the power of error analysis by enabling an easy correlation of time-critical events. Thus, time-consuming searches through long strips of error printouts are eliminated, freeing you to spend time fixing problems, not finding the cause.

PDH Testing

Many networks have evolved from PDH to include SDH rings ａnd long-distance, high-capacity trunks. The PDH network segments are commonly retained for access, service delivery, ａnd economic reasons. The CTS850 Opt. 38, PDH Tributary card provides features for testing ａnd accessing PDH subrates from 140 MBps, 34 MBps, 8 MBps, 2 MBps, down to N/M × 64 Kbps. Additional PDH test features also include simultaneous multilayer G.826, M.2100 results, Round Trip Delay, Voice Channel Monitor, ａnd Burst FAS Errors.

This option also empowers the CTS850 with mapping ａnd demapping of 2, 34, ａnd 140 MBps payloads in virtual containers ａnd testing of TU-12, TU-3 ａnd AU-4 overheads, making it ideal for testing hybrid networks.

Jitter ａnd Wander Testing

To support current ａnd emerging ITU-T ａnd ETSI standards, CTS850 Opt. 14 for Jitter ａnd Wander provides the most comprehensive, easy-to-use measurements for both SDH ａnd PDH equipment ａnd networks.

The CTS850 is the first test set to fully conform to the requirements of the new ITU-T O.172 （Jitter/wander test for SDH networks）. So for the first time, measurements of pointer jitter can be made reliably ａnd accurately. Widely variable results are a thing of the past.

With its wide-ranging ａnd comprehensive generation, analysis, pointer movement, automated jitter output, transfer, ａnd tolerance testing, the CTS850 is the complete solution for your current ａnd future test requirements.

Also included in Opt. 14 is Real-Time Wander Analyst application software for MTIE ａnd TDEV parameter analysis. Now you can fully test ａnd qualify the timing ａnd synchronization of your new SDH/PDH equipment ａnd networks. Jitter history histograms can be correlated with simultaneously-acquired Wander TIE data so troublesome conditions can be quickly diagnosed.

Video Service Performance ａnd 45 MBps Mapping ａnd Demapping

Digital video services demand a more stringent level of SDH/PDH timing ａnd synchronization performance than many other services. The CTS850 Opt. 14 provides exclusive new measurements at the network interface to assess video service performance. Also, CTS850 Opt. 55, provides the ability to test 45 MBps Mapping ａnd Demapping, including Jitter ａnd Wander testing, to bring the CTS850＇s advanced benefits to Video Service Measurement.