B&K 2250 Light Instrukcja Użytkownika Pobierz pdf (Strona 10)

BATTERY PACK

Rechargeable Li-Ion battery

Part No.: QB-0061

Voltage: 3.7 V

Capacity: 5200 mAh nominal

Typical Operating Time: >10 h (screen backlight dimmed); >7 h (full

screen backlight)

Battery Cycle Life: >500 complete charge/discharge cycles

Battery Indicator: Remaining battery capacity and expected working

time may be read out in % and time

Battery Fuel Gauge: The battery is equipped with a built-in fuel gauge,

which continuously measures and stores the actual battery capacity in

the battery unit

Charge Time: In instrument, typically 10 hours from empty at ambient

temperatures below 30°C. To protect the battery, charging will be

terminated completely at ambient temperatures above 40°C. At 30 to

40°C charging time will be prolonged. With External Charger ZG-0444

(optional accessory), typically five hours

Note: It is not recommended to charge the battery at temperatures below

0°C (32°F) or over 50°C (122°F). Doing this will reduce battery lifetime

CLOCK

Back-up battery powered clock. Drift <0.45 s per 24-hour period

Storage

INTERNAL FLASH-RAM (NON-VOLATILE)

20 Mbyte for user setups and measurement data

EXTERNAL MEMORY CARD

Secure Digital (SD and SDHC) Card: For store/recall of measurement

data

Compact Flash (CF) Card: Hardware versions 1 – 3 only. For

store/recall of measurement data

USB MEMORY STICK (Hardware Version 4 only)

For store/recall of measurement data

Environmental

WARM-UP TIME

From Power Off: <2 minutes

From Standby: <10 seconds

TEMPERATURE

IEC 60068–2–1 & IEC 60068–2–2: Environmental Testing. Cold and

Dry Heat

Operating Temperature: –10 to +50°C (14 to 122°F), <0.1 dB

Storage Temperature: –25 to +70°C (–13 to +158°F)

HUMIDITY

IEC 60068–2–78: Damp Heat: 90% RH (non-condensing at 40°C

(104°F))

Effect of Humidity: < 0.1 dB for 0% < RH < 90% (at 40°C (104°F) and

1kHz)

MECHANICAL

Environmental Protection: IP 44

Non-operating:

• IEC 60068–2–6: Vibration: 0.3 mm, 20 m/s

10 – 500 Hz

• IEC 60068–2–27: Shock: 1000 m/s

• IEC 60068–2–29: Bump: 4000 bumps at 400 m/s

WEIGHT AND DIMENSIONS

650 g (23 oz.) including rechargeable battery

300  93  50 mm (11.8  3.7  1.9) including preamplifier and

microphone

User Interface

LANGUAGE

User Interface in Catalan, Chinese (People’s Republic of China), Chinese

(Taiwan), Croatian, Czech, Danish, English, Flemish, French, German,

Hungarian, Japanese, Italian, Korean, Polish, Portuguese, Romanian,

Russian, Serbian, Slovenian, Spanish, Swedish and Turkish

HELP

Concise context-sensitive help in English, French, German, Italian,

Japanese, Korean, Polish, Portuguese, Romanian, Serbian, Slovenian

and Spanish

UPDATE OF SOFTWARE

Update to any version using BZ-5503 through USB or update via Internet:

• any version from 4.0 and up

WEB PAGE

Connect to instrument via Internet browser supporting JavaScript. The

connection is password protected

Two Levels of Protection:

• Guest level: for viewing only

• Administrator level: for viewing and full control of the instrument

Software Specifications – Sound Level Meter Software for 2250 Light BZ-7130

Conforms with the following National and International Standards:

• IEC 61672–1 (2002–05) Class 1

• IEC 60651 (1979) plus Amendment 1 (1993– 02) and Amendment 2

(2000–10), Type 1

• IEC 60804 (2000–10 ), Type 1

• DIN 45657 (1997–07)

• ANSI S1.4–1983 plus ANSI S1.4 A–1985 Amendment, Type 1

• ANSI S1.43–1997, Type 1

Note: The International IEC Standards are adopted as European

standards by CENELEC. When this happens, the letters IEC are replaced

with EN and the number is retained. 2250 Light also conforms to these

EN Standards

Input

CORRECTION FILTERS

For Microphone Type 4950 and 4952:

Correct the frequency response to compensate for sound field and

accessories

Accessories (Type 4950 only): None or Windscreen UA-0237

Sound Field: Free-field or Diffuse-field (for Type 4952 only: 0° (Top)

reference direction and 90° (Side) reference direction)

Analysis

DETECTORS

Parallel Detectors: On every measurement:

A- or B-weighted: (Switchable) broadband detector channel with three

exponential time weightings (Fast, Slow, Impulse), one linearly averaging

detector and one peak detector

C- or Z-weighted: (Switchable) as for A- or B-weighted

Overload Detector: Monitors the overload outputs of all the frequency

weighted channels

MEASUREMENTS

X = frequency weightings A or B

Y = frequency weightings C or Z

V = frequency weightings A, B, C or Z

U = time weightings F or S

Q = exchange rate 4, 5 or 6 dB

N = number between 0.1 and 99.9

For Storage: Full statistics

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