
1-2
1.2
SAM 4040D: MORE THAN A SLM
Supporting Wavetek’s Sweepless
sweep, where the carrier itself is
used as the sweep signal of signal level measurements, the SAM
4040D is capable of automatically or manually conducting a battery
of tests. These include a full scan of the cable spectrum to 1 GHz. A
proprietary digital signal processing (DSP) technique measures hum
and carrier-to-noise (C/N) ratio on modulated carriers. Spectrum
analysis’
Zero Span
,
Peak
, and
Desired/Undesired
modes helps
technicians to analyze cablemodem and digital set-top box signals.
The SAM 4040D SLM is a streamlined, hand-held instrument,
weighing less than five pounds. A 320 X 240 backlighted dot matrix
LCD shows measurement data in both graphical and numerical
formats. A new extended life battery (4-5 hours typical) is standard
in SAM 4040D. This new battery is compatible with existing SAM
4040 and Stealth Sweep receiver units. Existing StealthTrak and
3SR/V/T batteries can be used in SAM 4040D.
1.3
NEW FEATURES AND BENEFITS IN
SAM 4040D
Following the existing SAM4040’s capabilities, the SAM4040D adds
enhanced ingress and noise measurement capabilities, digital carrier
analysis, and increased spectrum analyzer functionality, summarized
as follows:
•
Faster scanning and spectrum analysis for ingress and noise
detection (catch bursty noise as fast as 5 microseconds)
•
Desired/undesired TDMA digital carrier analysis tool, which
allows technicians to see the quality and performance of
cablemodems and digital set-top boxes in the reverse path
•
New and simple to use operation through the Navigator user
interface
•
Built in pre-amp for reverse path alignment and analysis which
reduces the jumper cables and ‘boxes’ that a technician must
carry. This drastically simplifies alignment methods. This pre-
amp also allows the technician to better see test point ingress
and noise
The new StealthTrak features address emerging advanced services
such as Internet, IP telephony, digital video and DVB. With them,
the StealthTrak is a powerful, “many-tools-in-one” instrument in one