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IP/NETWORK MEASURING INSTRUMENTS

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Tandem connection

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Wander measurement (option) The N1/Z5 and N2/Z6 bytes can be set and measured. Subdivides the bandwidth of the wander measurement into three ranges, and can analyze the wander factor caused by temperature change, pointer, etc. It can also perform measurements conforming to ITU-T O.172.

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Various analysis functions The internal optical power meter and frequency counter allows the user to measure optical power and frequency during error and alarm measurement without changing the connections of the signal cables. The MP1570A can capture any SOH/TOH or POH (1 byte), K1/ K2 byte, or H1/H2 byte in 1023 frames to analyze errors and alarms, and check APS operation. Measured errors and alarms can be displayed as a graph with a time scale in 1 second, 1 minute, 15 minutes, or 60 minutes.

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Through jitter function (only SONET/SDH) Able to generate the jitter by through, while monitoring the input jitter quality.

ATM?

Supports ATM from 1.5M to 622M rates

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Pointer value monitoring TC layer mappings of 622M, 156M, 52M, 139M, 45M, 34M, 2M and 1.5M are supported along with ATM mappings of O.191, AAL1, AAL2, AAL3/4, and AAL5, which makes the MP1570A ideal for vari- ous combinations of layers. The VPI/VCI for 1023 channels can be detected automatically, and the presence/absence of alarms, cell count, and non-conforming cell count can be displayed graphically, for easy comparison of line channel traffic. Changes in pointer value can be displayed as a graph with values updated in real time.

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MUX/DEMUX function (option) When the MUX/DEMUX option is added, the multiplexing structure including the frame alignment signal can be generated, and multi- plexer/demultiplexer measurement can be performed.

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Non frame pattern/CID pattern Frames can be set on/off at all bit rates. CID pattern can generate or analysis at SONET/SDH measurements.

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Through modes One of the three through modes can be selected: (1) Transparent, (2) Overhead/Overwrite, and (3) Payload/Overwrite. The external DS1/DS3/PDH signal can be added/dropped to/from payload by pay- load overwrite.

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Enhanced error/alarm simulation The MP1570A can generate normal and abnormal frames alternate- ly to test the frame synchronization function of terminal equipment. (This is an SDH/SONET FAS error addition function.)

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Easily operated pointer sequence test (combined jitter mea-surement) Able to generate the justification pattern conforming to ITU-T G.783 from the transmission equipment side, and simultaneously make the tributary signal offset variable. This makes the combined jitter test possible.

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1- and 2-point CDV in conformance with I.356 When measuring delay in cell traffic, either 1-point CDV or 2-point CDV conforming to ITU-T Rec. I.356 can be selected according to the conditions.

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Simultaneous display of error cells, inserted error cells andlost cells

Jitter, wander measurements

The jitter/wander measurement conforming to ITU-T O.171/O.172 exceeds these standards in performance evaluation. Automatic mea- surements, such as jitter tolerance, jitter transfer, and jitter vs. fre- quency offset are performed in a short time. Various automatic mea- surements can be achieved with just one unit. The error/alarm generation conditions can be displayed both numerical- ly and graphically to give a visual impression of the traffic conditions.

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Traffic monitoring The constantly changing traffic can be displayed as a graph for the selected-one-channel VPI/VCI.

IP-over-SONET/SDH, IP-over-ATM (option)

Programs IP/PPP at will transmits it, picks PPP packet from capture memory (option), displays it and supports high-speed POS router evaluation. Programs IP in the AAL5 payload at will transmits it, picks the IP packet from the cell capture memory, and displays it. And eval-uate router ATM function.

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IP/PPP header setting Able to set the value of each header optionally when selecting IPv4 or IPv6. Calculates FCS or header checksum automatically.

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Various wander generation functions (option) Various wander generations for evaluation are available: such as TDEV wander tolerance measurement and TDEV wander transfer characteristics measurement that were regulated by ITU-T, ANSI, Bellcore, and ETSI.

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PPP packet transmission and real time count Transmits the three types of packets (can be set separately) by op- tional sequence (the idle length between each packet can be set si- multaneously.). Displays the number of Tx packets and Rx PPP packets at real time.

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PPP packet capture and display Samples PPP packet from the capture memory, and displays IP header. Detects FCS error and displays it in red. http://www.anritsu.com 198