Aeroflex 2854S/2855S Digital Analyzers - AEROFLEX - #3

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For the very latest specifications visit www.aeroflex.com AIS Unframed all ones signal CLOCK SOURCE Internal, external or derived from the received signal Internal 34 and 140 Mbit/s Accuracy ±2 ppm from 0°C to 55°C Offset ±100 ppm External Unframed and Multiplex Clock BNC connector Range 6 MHz to 160 MHz Interface Sine or square wave (ECL/TTL) Impedance 50 Ù CLOCK OUTPUT TTL or ECL into 75 Ù LINE CODES CMI, AMI (50% duty cycle), HDB3, NRZ MAIN OUTPUTS 34 and 140 Mbit/s Unbalanced Impedance 75 Ù Peak Voltage 34 Mbit/s 1.0 V ±0.1 V 140 Mbit/s 0.5 ±0.05 V Space Voltage 0 V ±10% peak NRZ DIGITAL OUTPUT 34 and 140 Mbit/s Unframed only with external clock Frequency Range 6 to 160 Mbit/s Level TTL or ECL to 50 Mbit/s ECL above 50 Mbit/s Connector Data - main digital output BNC Clock - BNC on rear panel TEST PATTERNS Insertion Single Channel Selected 64 kbit/s channel of framed signal at 2048 kbit/s or 8448 kbit/s (G.744). Selected 64 kbit/s channel of 2048 kbit/s tributary.(8, 34 and 140 Mbit/s output), or 8448 kbit/s (G.744) tributary (34 and 140 Mbit/s output). n x 64 kbit/s Channel Selected n x 64 kbit/s channel of framed signal at 2048 kbit/s or 8448 kbit/s (G.744). Selected n x 64 kbit/s channel of 2048 kbit/s tributary (8, 34 and 140 Mbit/s output). Channel distribution can be contiguous or non-contiguous. 2048 kbit/s Tributary Selected 2048 kbit/s tributary (8, 34 and 140 Mbit/s output) 8448 kbit/s Tributary Selected 8448 kbit/s tributary (34 and 140 Mbit/s output) 34368 kbit/s Tributary Selected 34368 kbit/s tributary (140 Mbit/s output) Unframed Unframed signal PRBS 34 and 140 Mbit/s 215 -1, 218 -1, 220 -1, 223 -1, 225 -1, 228 -1, 231 -1 All zeros Continuous sequence of 0000 All ones Continuous sequence of 1111 Alternating Alternating sequence of 1010 Word User programmable sequence of 24 (34 and 140 Mbit/s only), 16 or 8 bits 8 + 8 word Two user programmable 8 bit sequences are alternated by an external TTL input. The changeover occurs at the end of 8 bits (not at 34 or 140 Mbit/s). 1 kHz 0 dBm0 sine wave Digital representation of a sinusoidal signal of 1 kHz at a nominal level of 0 dBm0, coded according to A-Law, inserted into single channel. This facility is available for 704 and 2048 kbit/s systems only. FILL PATTERNS All other channels in single channel and n x 64 kbit/s framed operation PRBS, 215 -1 User programmable 8 bit word 34 and/or 8 and/or 2 Mbit/s tributaries All 1s, All 0s, PRBS, Alternating 10 Copy of 2 or 8 or 34 Mbit/s test signal