Atec Wavetek-JDSU-SAM-4040D - Manual (Page 3)

Sweepless Sweep ® Provides
Frequency Response without a
Sweep Transmitter
Wavetek’s trademarked
Sweepless Sweep ® passively pro-
vides frequency response informa-
tion about a network by measuring
active carriers. The SAM 4040D
stores the levels of all active carri-
ers at one reference point in the
network, and then can compare
the relative levels to another one of
the same network. Just like a ref-
erenced sweep, but without the
need for a transmitter!
Extensive Suite of Troubleshooting
and Proof-of-Performance
Measurements
Carrier/noise, hum, and depth of
modulation are all measured in-ser-
vice and in-channel on analog
(unscrambled) video channels. The
SAM 4040D’s sophisticated digital
signal processing algorithms provide
the most accurate information possi-
ble without creating any service
outage. No other meter offers this
much information to aid trouble-
shooting without creating a service
interruption to take readings.
The SAM 4040D shows levels
in both bargraph and numeric form.
When tuned to a specific channel, a
comprehensive set of information is
provided: tuned channel, video
frequency and level, audio frequen-
cy and level, as well as the differ-
ence between the two.
Auto-Test Takes the Pain Out of
Proof-of-Performance
Level, C/N, hum, and depth of
modulation measurements can be
automated in an ‘Auto Test’ pro-
gram. These tests can be done in
real-time at the user’s request. An
internal timer allows the schedul-
ing of a complete set of ‘24-hour’
test measurements. This allows
many of the FCC proof-of-perfor-
mance tests to be completed in one
quick procedure.
Tests to be run for each individ-
ual channel in the channel plan can
be specified by the user. All mea-
surements can be checked against
limits to create a pass/fail display that
summarizes the entire test. These
test results can be viewed in the
field to ensure that the data collect-
ed is correct for the required report
and can be printed directly to a serial
printer, or uploaded to a computer
for further analysis/printing.
PC Data Logging and
Analysis Software
StealthWare allows users to
upload databases and measurement
screens from the field for later analy-
sis and comparison on a PC. These
files also can be used as documenta-
tion of alignment work done by con-
tractors or technicians.
StealthWare can be used to edit
channel plans on a PC. Channel
plans can also be uploaded from an
instrument for review.
High-Capacity Memory for
Field Documentation
The SAM 4040D offers a large,
non-volatile memory for storing the
results of measurements taken in
the field. Well over 100 files can
be stored in the unit before upload-
ing (see specifications for an exam-
ple of capacity). All files are stored
in a common ‘pool’ of memory, so
storing fewer of one file type allows
for storing more of another.
All files are stored as databases
of the readings, not ‘pictures’ of a
screen display. This allows view-
ing parameters (such as sweep fre-
quency limits or scales) to be
changed when the file is later
viewed. It also provides data for
StealthWare to compare files dur-
ing later study.
New NiMH Battery Extends Usage
A new extended life battery is
provided on all SAM 4040D units. It
provides five hours of continuous use
on a single charge (even in worst
case – with backlight on).
An expandable bag allows the
SAM 4040D to use either extend-
ed life batteries, or old standard
Stealth batteries, if desired.
Upgradeability
The SAM 4040D’s design
allows for easy upgradeability
while in the field. Your invest-
ment in Wavetek test equipment
is protected. When future ver-
sions of the SAM 4040D are avail-
able, easy upgrade procedures are
provided. And, the entire proce-
dure can be completed in less
than five minutes.
Operational Specifications
Level Measurement
Range: -40 to +60 dBmV
Resolution: 0.1 dB
Accuracy: +/- 1.0 dB from -20 to +50°C
1,2
Signal types: single carrier, video (single or
dual audio), audio
Additional uncertainty: +/- 1.8 dB for
digital (QAM, QPR, QPSK, VSB, CAP-16),
TDMA (zero-span spectrum mode)
Tilt Measurement
Up to 9 pilot carriers or video channels
Hi-Lo
▲ ▲ Resolution: 0.1dB