Installation and Operations Guide
3V
Qt 100
Table of Contents
Safety Information .......................................................................3
Qt 100 Introduction ......................................................................4
Sound Level Meter Readings ..............................................................5
No Sound Level Meter Available ............................................................5
Hardware Installation .....................................................................6
Connections to the Front Panel .............................................................7
Contact Closure .........................................................................8
Connecting Power .......................................................................8
Installing Qt Emitters .....................................................................9
Emitter Installation Order ..................................................................9
Table 1 ...............................................................................10
Custom Cabling Guidelines ...............................................................10
System Conguration Via the Front Panel ...................................................11
Error Codes and Clear Error ..............................................................12
Post-Installation Hando .................................................................13
Warranty .............................................................................14
Zone Destination Record .................................................................16
Settings Record ........................................................................16
1
Safety Information
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water. Indoor use only.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including
ampliers) that produce heat.
9. Use only power supply provided with the unit.
10. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide
blade or the third prong is provided for your safety. If the provided plug does not t into your outlet, consult
an electrician for replacement of the obsolete outlet.
11. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
12. Only use attachments/accessories specied by the manufacturer.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualied service personnel. Servicing is required when:
• the apparatus has been damaged in any way, such as power-supply cord or plug is damaged
• liquid has been spilled or objects have fallen into the apparatus
• the apparatus has been exposed to rain or moisture
• the apparatus does not operate normally, and/or has been dropped
3
Qt 100 Introduction
This manual covers system installation, masking level setting and system maintenance. This introduction
section discusses guidelines to ensure eective sound masking coverage.
The Qt 100 control module supports one zone of sound masking with two cable runs. Each run supports up to
60 emitters. The maximum coverage area for the Qt 100 is 12,000 square feet (1,115²). The module features
one audio input for distribution of audio from paging controllers or background music players.
It is important that the masking volume be set correctly to achieve the full eectiveness of the Qt 100 system.
If volume levels are set too low, speech privacy will be reduced and workplace distractions will become more
apparent. If volume levels are set too high, the masking sound could become a source of distraction. The
higher the setting that can be used comfortably, the better the acoustic privacy.
For a given open oce design, including ceiling height, ceiling material and workstation panel height, we can
dene the masking volume required to achieve “normal acoustic privacy,” (i.e., normal voices are unintelligible
yet audible). In an open oce environment, the target background sound level is in the 45–48 dBA range, as
measured 3 feet (0.9 m) above oor level.
Similarly, for private oces, based on wall panel design and ceiling construction, we can dene masking
volumes required to achieve “condential privacy” (i.e., normal voices not audible). Most private oces have a
target background sound level in the 38–42 dBA range.
If a sound level meter is available, it is recommended that the control module’s masking volume be adjusted up
or down to achieve the readings listed in the Sound Level Meter Readings section.
4
Sound Level Meter Readings
Private Oce Zones
38–42 dBA, averaged spatially within the oce
Open Area Zones
45–48 dBA, measured 3 feet (0.9 m) above oor level
No Sound Level Meter Available
The recommended levels are likely to be achieved in most environments by setting the control module’s
masking volume settings as follows:
Private Oce Zones
05–09, for all ceiling heights
Open Area Zones
11–14, for 08 ft. (2.4 m) ceilings
13–16, for 10 ft. (3 m) ceilings
15–18, for 12 ft. (3.7 m) ceilings
Masking volumes must be set suciently high to improve speech privacy and reduce distraction but not so
high that the masking sound becomes obtrusive. Settings within the above ranges typically accommodate both
objectives. As a general rule, use the high end of the range. Base nal settings on site conditions and customer
preferences.
5
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