Aeroflex 2854S/2855S Digital Analyzers - AEROFLEX - #6

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Framing Errors Measured at each hierarchical level for the demultiplex path selected Pattern Errors Measured for the selected test pattern which can be a tributary, 64 kbit/s, n x 64 kbit/s channel, or unframed. CRC Errors Measured as appropriate for selected input signal, or 2048 kbit/s tributaries MAIN PARAMETERS As 2851 ADDITIONAL PARAMETERS As 2851 G.821 ERROR PERFORMANCE As 2851 STORED RESULTS As 2851 PROPAGATION DELAY 34 and 140 Mbit/s Range Up to 8 seconds Resolution 1 bit 4 bits at 140 Mbit/s Update rate Typically up to 8 seconds SIGNALING BIT RATE MEASUREMENT The bit rate is measured every other second and displayed to the nearest 1 Hz, or 4 Hz at 140 Mbit/s Accuracy ±2 ppm, ±1 count DIGITAL SIGNAL LEVEL MEASUREMENT The amplitude of the incoming digital signal is measured and displayed in Volts peak and dB relative to nominal 34 and 140 Mbit/s Range +3 to -40 dB Accuracy +3 to -30 dB ±2 dB -30 to -40 dB ±3 dB 2 CHANNEL SYNCHRONIZATION MEASUREMENT As 2851 DS3 POD (External Accessory) Provides DS3 test interface by converting TTL data and clock signals to DS3 signals DS3 signals DS3 Out DS3 In Bit Rate 44.736 Mbit/s Line Code B3ZS Transmit Clock Internal Recovered from the receiver Transmit Frequency Deviation Nominal +50 ppm -50 ppm Signal Format Unframed TTL Connections Transmit Data In Transmit Clock Out Receive Data Out Receive Clock Out Connectors DS3 BNC TTL BNC Power The pod is powered from a mains supply accessory. TTL to LVDS CONVERTER (External Accessory) Provides LVDS test interface by converting TTL data and clock signals to LVDS signals Signals Transmit Data Out Transmit Clock In Receive Data In Receive Clock in Bit Rate 6 to 50 Mbit/s Connectors TTL BNC LVDS 37 Way D type ISO 4902 LVDS Pinout Signal Pin Transmit Data Out 6, 24 Transmit Clock In 8, 26 Receive Data In 4, 22 Receive Clock In 17, 35 Power +5 V taken from 25 Way D Type Auxilliary connector GENERAL CHARACTERISTICS As 2851 except IEEE-488 (Option) Used for remote control or printer operations.