ComSonics Inc. 22002A Manuel D’Utilisation
Qualifier Supplement
1
Supplemental Notice
This document contains the CyberTek Qualifier system functions and is supplemental to the
WindowLite Installer User’s Guide, CSI Document 100673-003.
WindowLite Installer User’s Guide, CSI Document 100673-003.
System Overview
ComSonics Qualifier is a multipart system that provides a means of identifying internal
shielding integrity quality without having to enter the potential customer premises. One of
Qualifier’s two transmitters, the Test Source Transmitter (TST) located within the service
vehicle, provides an RF envelope that blankets the targeted premises. The second
transmitter, the Test Key Transmitter (TKT) located within an optionally accessorized
ComSonics’ Window Installer, delivers the signal that triggers the remotely located TST and
sets up the Installer to receive traces of TST signal finding their way into the upstream path.
With the Installer connected to either the premises grounding block or the associated drop at
the housetap, a press of Installer’s “Q” button instructs TKT to trigger TST. When triggered
by TKT, TST emits a brief, 5 watt pulse just above the CB radio band, and within the
upstream spectrum at 27.45 MHz, 27.47 MHz or 27.49 MHz. TST then envelopes the
premises with a signal of about +58 dBmV (assumes the service vehicle is about 75 feet
from the premises). Shielding flaws within the in-home wiring invite the TST signal to
infiltrate the upstream path. Once on the center conductor, the in-home wiring system
funnels the TST signal to the Installer connection. The Installer measuring instrument takes
a snapshot at precisely the right time to capture and readout that portion of the TST signal
momentarily appearing at the selected connection point.
shielding integrity quality without having to enter the potential customer premises. One of
Qualifier’s two transmitters, the Test Source Transmitter (TST) located within the service
vehicle, provides an RF envelope that blankets the targeted premises. The second
transmitter, the Test Key Transmitter (TKT) located within an optionally accessorized
ComSonics’ Window Installer, delivers the signal that triggers the remotely located TST and
sets up the Installer to receive traces of TST signal finding their way into the upstream path.
With the Installer connected to either the premises grounding block or the associated drop at
the housetap, a press of Installer’s “Q” button instructs TKT to trigger TST. When triggered
by TKT, TST emits a brief, 5 watt pulse just above the CB radio band, and within the
upstream spectrum at 27.45 MHz, 27.47 MHz or 27.49 MHz. TST then envelopes the
premises with a signal of about +58 dBmV (assumes the service vehicle is about 75 feet
from the premises). Shielding flaws within the in-home wiring invite the TST signal to
infiltrate the upstream path. Once on the center conductor, the in-home wiring system
funnels the TST signal to the Installer connection. The Installer measuring instrument takes
a snapshot at precisely the right time to capture and readout that portion of the TST signal
momentarily appearing at the selected connection point.
The basic steps for qualifying a home are as described below:
1. Park the service vehicle near the home no further than 150 ft and preferably about 75 ft
from the house you are qualifying. Make sure the transmitter is powered.
2. Connect the Qualifier unit to the appropriate house drop that needs testing.
3. Press the “Q” button to put the Qualifier unit into Qualifier Mode.
4. Press the “Q” a second time to make the measurement. The transmitter light on the
3. Press the “Q” button to put the Qualifier unit into Qualifier Mode.
4. Press the “Q” a second time to make the measurement. The transmitter light on the
transmitter will power up.
5. The house will be illuminated with a 5W burst that blankets the house.
6. If the signal ingresses into the house, it can be read by the Qualifier Unit.
7. The Qualifier Unit will give the technician a read out of how many dB the unit the unit is
6. If the signal ingresses into the house, it can be read by the Qualifier Unit.
7. The Qualifier Unit will give the technician a read out of how many dB the unit the unit is
above or below threshold. The threshold is determined by whether the unit is in
Automatic or Manual mode which are described in the Qualifier Unit Description.
Automatic or Manual mode which are described in the Qualifier Unit Description.