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> Spirent DLS90-26 wireline simulator
Spirent DLS90-26 wireline simulator
SPECIFICATIONS The DLS 90 reproduces the characteristics of twisted PIC telephone cable for testing access products designed to operate on the local loop. Description Adjustable in 50 foot or 50 meter lengths, the DLS 90 is useful in determining the length at which transmission errors will occur. Each DLS 90 can be ordered in one of three gauges; 24 or 26 AWG, or "0.4 mm PE". Adjustments for 24 and 26 AWG are in 50 foot increments, and for the 0.4 mm PE, adjustments are in 50 meter increments. Simulation is achieved using passive components (L, R, C) which allows for signals to be passed in both directions simultaneously, just like real cable. Since the DLS 90 can withstand 300 volts differentially from tip to ring without breakdown and can continuously pass 150 mA, sealing current, ring voltage and loop current (line power) can be applied. The front panel of the unit has an LCD alpha-numeric display and push buttons for controlling the length of the cable simulated. Alternatively, the DLS 90 can be controlled using an IEEE 488 interface and a RS232C (rear panel mounted). The DLS 90 can be used to test a variety of 2 or 4 wire local loop products such as: ISDN Uinterface devices, Digital Loop Carrier (DLC), Digital Subscriber Lines (DSL), High bit Rate Digital Subscriber Lines (HDSL), DDS products, Centrex Data Units, Digital Service Units (DSU), Asymmetrical Digital Subscriber Loop (ADSL), G.Lite, Switched 56 service units, wireline modems, wireline drivers, inverse multi-plexers and pair-gain systems. All That You Need Consider these DLS 90 benefits: The North American model (ANSI) is adjustable in 50 foot lengths and can simulate up to 9,350 feet of cable. The European (ETSI) model is adjustable in 50 m lengths up to 3 km. Available in three wireline gauges; 24 or 26 AWG, or "0.4 mm PE". The DLS 90 can withstand ring voltage and loop current. Test 2 or 4 wire local loop products such as: ISDN Uinterface devices, DLC, DSL, HDSL and DDS products. Excellent for ADSL and G.Lite applications. Control your unit manually or remotely via IEEE 488 and RS232C with a PC. The DLS 90 offers up to 2 MHz of useable simulation bandwidth. Descriptions The DLS 90 is a two wire cable simulator. The user can select the simulated cable length using the keys on the front panel, or via one of the remote control interfaces (i.e. IEEE-488 or RS-232). For the North American gauges (24 or 26 AWG), the length can be varied from 0 to 9.35 kft in steps of 50 ft. For the European gauges (0.4 mm PE), the lengths can be varied from 0 to 3 kms in steps of 50 m. Simulated Cable Type and Maximum Length The DLS 90 simulates one gauge of cable which may be 26, 24 AWG or 0.4 mm PE. The gauge must be specified at the time of order. The maximum length can be up to 9.35 kft for AWG units, and up to 3.0 km for 0.4 mm PE units. Frequency Response DC to 1.5 MHz, smooth response to 2.0 MHz. Accuracy 0.5 dB up to 20 dB attenuation. 1 dB from 21 dB up to 35 dB attenuation. 2 dB up to 70 dB attenuation. Delay From 20 kHz to 1 MHz, 10%. Characteristic Impedance From 20 kHz to 999 kHz, 5%. From 1 MHz to 1.5 MHz, 10%. DC Characteristics Up to 300 VDCpeak-to-peak across tip & ring. 100 mA (150 mA peak). IEEE 488 Remote Control The unit can be controlled via an IEEE 488 interface. The unit supports the following functions: Listener Talker Local Lockout Serial Poll Selective Device Reset Bus Reset Primary Addressing from 0 to 30 Options Rackmount kit IEEE-488 interface card
