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Agilent 89441A technical data – options
Accuracy (IS-95 CDMA)
CDMA Base or CDMA Mobile preset, instrument
mode of IF (0 – 10 MHz) or RF (2 – 2650 MHz),
2.6 MHz span, full scale signal, result length = 200,
averages = 10.
Residual Errors
Error vector magnitude 1% rms
Magnitude error 1% rms
Phase error 0.57° rms
Frequency error 10 Hz
(Added to frequency accuracy if applicable)
Origin I/Q offset –60 dB
Signal acquisition
Note: Signal acquisition does not require an
external carrier or symbol clock
Data block length
Adjustable up to 4096 samples
Examples:
4096 symbols at 1 point/symbol
409 samples at 10 points/symbol
Symbol clock Internally generated
Carrier lock Internally locked
Triggering
Single/continuous
External
Internal source
Pulse search (searches data block for beginning
of TDMA burst, and performs analysis over
selected burst length)
Data synchronization
User-selected synchronization words
Arbitrary bit patterns up to 30 symbols long,
at any position in a continuous or TDMA burst
and measurement result. Up to 6 words can
be defined.
Arbitrary waveform source
RAM-based arbitrary waveforms
Waveform registers Maximum 6
Waveform length 4096 complex points each
(16,384 with Option
89441A-AYB)
Residual accuracy, typical
Examples
π/4DQPSK, 24.3 EVM ≤ 0.7% rms
ksymbols/second,
a = 0.35
GMSK, 270.833 EVM ≤ 1.0% rms
ksymbols/second,
BT= 0.30
Adaptive equalization
This option equalizes the digitally modulated
signal to remove effects of linear distortion (such
as unflatness and group delay) in a modulation
quality measurement.
Equalizer performance is a function of the filter
design (e.g., length, convergence, taps/symbol)
and the quality of the signal being equalized.
Equalizer
Decision-directed, LMS, feed-forward equalization
with adjustable convergence rate.
Filter length 3–99 symbols, adjustable
Filter taps 1, 2, 4, 5, 10, or 20 taps/symbol
Measurement results
Equalizer impulse response
Channel frequency response
Supported modulation formats
MSK, BPSK, QPSK, OQPSK, DQPSK, π/4DQPSK,
8 PSK, 16 QAM, 32 QAM, 64 QAM, 256 QAM,
8 VSB, 16 VSB
Digital video modulation analysis—Option
89441A-AYH
(requires Option 89441A-AYA)
This option extends the capabilities of the vector
modulation analysis Option 89441A-AYA by adding
modulation formats used for digital video transmission. Except where noted, all of the standard
capabilities of Option 89441A-AYA are provided for
the new modulation formats.
Supported modulation formats
Additional modulation 8 and 16VSB
formats 16, 32, 64 and 256QAM
16, 32, and 64QAM
(differentially encoded
per DVB standard)