Atec JDSU_DSAM-900B - Manual (Page 2)

Downstream spectrum (forward scan)
Frequency Range
40 to 1000 MHz
Sweep rate Less than 2.5 seconds
Display scaling and range
5 and 10 dB/division; 6 vertical divisions
Resolution bandwidth 280 kHz
Dwell 1 ms
Span 50MHz or 10MHz zoom
Range
(1)
–35 to 60 dBmV (typical)
Constellation
Modulation type
64 and 256 QAM
Zoom capability Yes
Return QAM Generator (Option)
Frequency Range
Models ending in B: 5 to 55 MHz
Signal Level Range 8 to 58 dBmV
Signal Modulation CW or 16 QAM
Symbol Rates (Msps) 1.28, 2.56, 3.84, 5.12
(1) Total integrated power, detectable range
(2) Accuracy for levels between –20 to 55 dBmV
Additional uncertainty ±0.5 dB across –20°C to 50°C
Additional uncertainty ±1.0 dB from 4 MHz to 15 MHz
(3) Total integrated power, At 64 QAM
(4)DSAM-900B with Deep Interleave can support up to (I,J) = (128, 4)
interleave for ITU-T J.83 Annex B
(5) Accuracy and behavior from 100 MHz to 1000 MHz for
levels between –5 to 50 dBmV (typical)
(6) The sum of the Internal, External and Probe Losses and
the Telemetry level must be greater than or equal to 10.0 and
less than or equal to 55.0