Installation Signal Level Meter User Manual

Telephone: Nationwide: Fax: E-mail: Internet:
06/08
Sadelco DisplayMax 800/800CLI Meters
215-675-2053 800-523-5947 215-675-7543 [e-mail] http://www.tonercable.com
969 Horsham Road
Horsham, Pennsylvania 19044 USA
Product Description
The DisplayMax 800 / 800CLI are powerful enough
to maintain the headend, yet simple enough for
routine installation checks. With a wide range of
measurement options, a technician can quickly
check an individual channel, favorite channels, all
channels, tilt, ingress, C/N or HUM.
The graphic display allows a technician to view the
full system response and quickly identify problems
such as low level, roll-off, suck-outs or missing
channels. In the ingress mode, the graphic display
shows a spectrum analyzer view of the full return
path, revealing any unwanted ingress signals.
All multi-channel modes are supported by an auto-
matic pass/fail test that compares all measured
channels against user defined parameters. In less
than one minute a headend technician or installer
can scan up to 135 channels and verify that all
analog and digital channels are within tolerance.
Data recording permits all measurements to be
saved and downloaded to a computer.
VoIP and High-Speed Data Qualifier
Qualifying the drop and home wiring for VoIP and
HSD services requires more than just checking
signal level. Although proper signal level is impor-
tant, verifying the shielding properties of the coax
is equally important. Why is shielding important?
Bad shielding allows unwanted signals (ingress) to
enter the return path and slow down or abruptly
stop digital services. Since more than 90% of
ingress is generated at the drop and home wiring,
it is necessary to check all installations for good
shielding.
To test the entire home for ingress, disconnect the
ground block and connect the meter to the home
wiring. Performing an ingress scan will immedi-
ately show if ingress is present. A peak-hold mode
will capture intermittent ingress if left running for a
longer period of time.
Since shielding problems also allow forward chan-
nels to escape from the cable, a leakage detector
is very effective in finding the source of an ingress
problem. The Displaymax 800 can perform leak-
age testing when upgraded to model 800CLI. With
the 800CLI, simply attach the rubber duck antenna
and press the leakage key.
DisplayMax 800 / 800CLI
Features
• VoIP & HSD Qualifier
Insure that ingress will not interfere with VoIP & HSD services
• Ingress Detection (800)
Fast ingress scan with peak-hold function
• Leakage & Ingress Detection (800CLI)
Advanced troubleshooting tools for today’s advanced services
• Full Spectrum Display
View the response of your entire system on one screen
• Data Recording
Download or print saved files for a permanent record
• Auto-Calibration
Eliminate the cost and downtime of annual calibration
• Additional Standard Features
C/N, HUM, Audio, Auto-Check, Tilt & Fast Charge
Headend, Distribution & Installation Signal Level Meter