41
7. SPECIFICATIONS
Standards:
ANSI S1.25 - 1991, ANSI S1.4 - 1983: Type 2
IEC 651 - 1979, IEC 804 - 1985: Type 2
IEC 1252 - 1993
Measuring Range:
40 - 110dB or 70-140dB. Maximum level is for sinusoidal signals. A signal with a 10dB crest factor will
be measured accurately if its RMS level is 10dB below the maximum level for the range. Peak detector
range is 70-114dB or 100-144dB.
Detector:
True RMS, 63dB Pulse Range
Data Output:
Requires Interface Modules connected to the microphone connector.
Parallel operation or Selectable Baud:
300 600 1200 2400 4800 9600 19200.
Microphone:
8mm Shoulder-Mount, Type 2. One piece system:
Cable, Connector, and Microphone
Battery:
Single 9-volt alkaline provides approximately 48 hours of operation
Integration Time:
Signal dependent: With a 3dB Exchange rate and a signal level of 140dB the integration time would be
62 hours. As the signal level decreases and the exchange rate increases, the time increases to 145
hours maximum.
Memory and Clock/Calendar Battery Backup: Lithium cell, 1 to 2 year life not including time that the 9 volt battery is installed.
Temperature:
-10
o
to +50
o
C operating; -20
o
to +60
o
C storage (battery removed)
Humidity:
0 to 95% non-condensing
Electromagnetic
Negligible below 50 Oersteds at 50 to 60 Hz.
Field Effects:
Tested for RF succeptibility with <1dB error at field strengths to 10 V/m over the frequency range of 10
MHz to 500 MHz.
Size:
5.5 x 2.8 x 1.4 inches (140 x 70 x 40 mm)
Weight:
15.5 oz. (440 grams)
Construction:
Cast aluminum housing with security cover.
Note: Specifications subject to change.
42
8. ACCESSORIES
56-963 8mm Shoulder-Mount Dosimeter Microphone, Type 2. One piece system including Cable, Connector, and
Microphone
58-852 Earloops to hold microphone at the ear, package of 10.
56-830 Clothing Clips, package of 5, for microphone cable.
58-452 WS-5 Windscreen, (8mm I.D.), package of 10.
Data Interface Modules
56-957 Parallel Printer Interface, Centronics Compatable
56-707 Serial Communications Interface
25-pin, RS-232 Female
56-841 Direct Input Cable for electrical signal input
Printer
56-022 80 Column Parallel Printer, 110 volt only.
Power Supplies
56-973 AC/DC Adapter, inserts into battery compartment.
Uses the MODEL 920 AC Power Supply, not included, or various other power sources.
56-067 MODEL 920 AC Power Supply, 120 VAC to 9 VDC
QuestSuite for Windows Software
QuestSuite for Windows (3.1 or Windows 95) provides the ability to download data from the Q-300 and
save the data for future reference. Remote setup of measuring parameters, graphing capabilities and
report generation as well as the ability to work with Quest heat stress monitors, gas monitors and
sound level meters make the QuestSuite a valuable tool for industrial hygiene work. Specify the Q-
series dosimeter applet for use with the Q-300.