Atec Bruel-Kjaer-2250-2270 - Manual (Page 15)

15
Measurement Display and Control
MEASUREMENT DISPLAYS
SLM: Measurement data displayed as numbers of various sizes and one
quasi-analog bar
Measured data are displayed as dB values, housekeeping data as
numbers in relevant format.
Instantaneous measurement L
XF
is displayed as a quasi-analog bar
MEASUREMENT CONTROL
Manual: Manually controlled single measurement
Automatic: Pre-set measurement time from 1 s to 24 hr in 1 s steps
Manual Controls: Reset, Start, Pause, Back-erase, Continue and Store
the measurement manually
Auto-start: A total of 10 timers allow set up of measurement start times
up to a month in advance. Each timer can be repeated. Measurements
are automatically stored when completed
BACK-ERASE
The last 5 s of data can be erased without resetting the measurement
Measurement Status
ON SCREEN
Information such as overload and running/paused are displayed on
screen as icons
TRAFFIC LIGHTS
Red, yellow and green LEDs show measurement status and
instantaneous overload as follows:
• Yellow LED flash every 5 s = stopped, ready to measure
• Green LED flashing slowly = awaiting calibration signal
• Green LED on constantly = measuring
• Yellow LED flashing slowly = paused, measurement not stored
• Red LED flashing quickly = intermittent overload, calibration failed
NOTIFICATIONS
Sends an SMS or e-mail if an alarm condition is fulfilled
Alarm Conditions:
• Disk Space below set value
• Trig. Input Voltage below set value
• Internal Battery enters set state
• Change in Measurement State
• Reboot of analyzer
Signal Monitoring
The input signal can be monitored using an earphone/headphones
connected to the headphone socket, or it can be fed to the output socket
OUTPUT SIGNAL
Input Conditioned: A-, B-, C- or Z-weighted
Gain Adjustment: –60 dB to 60 dB
L
XF
output (every ms) as a DC voltage between 0 V and 4 V
DC output for calibration purposes: 0 dB ~ 0 V and 200 dB ~ 4 V
HEADPHONE SIGNAL
Input signal can be monitored using this socket with
headphones/earphones
Gain Adjustment: –60 dB to 60 dB
Annotations
VOICE ANNOTATIONS
Voice annotations can be attached to measurements so that verbal
comments can be stored together with the measurement
Playback: Playback of voice annotations can be listened to using an
earphone/headphones connected to the headphone socket
Gain Adjustment: –60 dB to 0 dB
TEXT ANNOTATIONS
Text annotations can be attached to measurements so that written
comments can be stored with the measurement
GPS ANNOTATIONS
A text annotation with GPS information can be attached (Latitude,
Longitude, Altitude and position error). Requires connection to a GPS
receiver
IMAGE ANNOTATIONS (TYPE 2270 ONLY)
Image annotations can be attached to measurements. Images can be
viewed on the screen.
Calibration
Initial calibration is stored for comparison with later calibrations
ACOUSTIC
Using Sound Calibrator Type 4231 or custom calibrator. The calibration
process automatically detects the calibration level when Sound Calibrator
Type 4231 is used
ELECTRICAL
Uses internally generated electrical signal combined with a typed-in value
of microphone sensitivity
CALIBRATION HISTORY
Up to 20 of the last calibrations made are listed and can be viewed on the
analyzer
Data Management
METADATA
Up to 10 metadata annotations can be set per project (text from keyboard
or text from pick list, number from keyboard or auto generated number)
PROJECT TEMPLATE
Defines the display and measurement setups. Setups can be locked and
password protected
PROJECT
Measurement data stored with the project template
JOB
Projects are organised in jobs
Explorer facilities for easy management of data (copy, cut, paste, delete,
rename, view data, open project, create job, set default project name)