Seeker D User’s Guide
Document Num., Rev. 4
May 2018
Page 12
Multiple Frequency Presets
Your Seeker D can be setup to operate on up to 10 different frequency presets, which
makes it easier to monitor and maintain multiple cable systems. These presets define the
leakage monitoring frequency and, if desired, the tag detection frequency as well. You have
the option of setting up only one frequency preset for simple operation, or multiple leakage
frequencies for maintaining multiple cable systems. Frequency settings range from
135–139 MHz
(low band) and
610.5–615 MHz
(high band) in 12.5 kHz increments.
Channel Tag Compatibility
Compatibility with the VIAVI CT-4 channel tag devices is another feature of your Seeker D.
The CT-4 can act as a traditional CT-2™ or CT-3™, and can insert the VIAVI proprietary
tagged signals in both the aeronautical range and the near LTE range at the same time.
The CT-4 eliminates the risk of affecting any adjacent digital channels by injecting an
adjustable signal from 10–30 dBmV, targeting approximately 30 dB below the chosen digital
carriers. Channel tag values are configured using the Seeker Setup software.
Squelch Operation
Squelch level is the RF signal threshold that the Seeker D uses to determine the validity of
the signal. The signal “breaks squelch” when the RF leakage is greater than the squelch
level and tag qualifiers are met as well. The receiver will not alarm for signals below the
squelch level.
The squelch level has a factory default of 2 µV/m. However, it can be reconfigured using
the Seeker Setup software.
Source Localization
The Seeker D emits an audible tone to help you pinpoint the leakage source. The tone
frequency increases with signal strength. As you move closer to the leak, the frequency of
the tone will increase.
While in monitoring mode, the Seeker D can toggle between
both the low band and high band for dual-band leakage
detection.
For the sake of this manual, the term “low band” refers to the
frequencies of 135–139 MHz and “high band” refers to the
frequencies of 610.5–615 MHz.
