Atec Aeroflex-RDL_DCR-2500A - Manual (Page 2)

–180
10 100 1,000 10,000
Offset Frequency (Hz)
Noise (dBc/Hz) SSB
100,000 1,000,000
–170
–160
–150
–140
–130
–120
–110
–100
– 90
– 80
– 70
– 60
– 50
– 40
– 30
Input Frequency
2083.9 MHz
NTS–1000B and DCR–2500A
The new PCS applications have placed high
demands on the designer and manufacturer. The
constant push to better utilize the available spec-
trum has made phase noise one of the most impor-
tant parameters. Phase synchronous modulation
has placed further demands on this critical parame-
ter. Since every dB is critical and costly, accurate
measurement is now a requirement, not a luxury.
The RDL Phase Noise Analyzer System that consists
of the NTS-1000B and DCR-2500A provides unique
measurement capabilities that are not available
from other suppliers. The ability of the NTS-1000B
to measure unlocked sources, in seconds, combined
with the very low phase noise in the DCR-2500A
Downconverter extends the measurement of phase
noise from the lab into the factory.
In the past phase noise measurements have been
confined to the laboratory due to the complexity of
the measurement techniques and the time consum-
ing tools that have been available. The RDL
System makes this a push-button measurement
that can be made by non-technical personnel or
under IEEE bus control. The built-in printer port
and easy data manipulation makes documenting
phase noise measurements a snap, and for the
first time, makes statistical process control of this
critical parameter feasible.
The low noise floor of the RDL System opens up
the possibility of really measuring what is going
on in a synthesizer’s design. Now the noise of the
PLL can be separated from the noise of the VCO
and real design improvements can be analyzed
and implemented.
Now you don’t have to specify an over-designed
VCO and pay for performance you can not confirm
or use. The RDL System is so simple and fast that,
for the first time, you can consider testing every
product in production.
Typical Noise Floor NTS-1000B and DCR-2500A
(Corrected for Source Noise)