info@tursdaletechnicalservices.co.uk
27
B-type
USB
interface connector for data exchange with PC
2.3. Default instrument settings
Default settings of DSA-50 after instrument turn-on are specified below:
Operating mode
Sound level meter (SLM)
d
Level range
55–135dB
Frequency weightings
A and C
Microphone heater Off
Measurement history recording
Off
Integration time
99h 59m 59s (infinite)
Noise exposure duration 8h
00m
The instrument setup can be recorded in measurement memory as follows:
Turn the instrument on.
Set proper operating mode, then select level range, frequency weighting, time
weighting (only at 1/3-octave analyzer mode) and microphone heater state (ON or OFF).
Save
measurement
result.
To use setup previously recorded, after turning instrument on, open MEMORY menu and
load the content of previously filled memory cell.
2.4. Preparation of the instrument to operation
Screw WK-21 measurement microphone on microphone preamplifier. Take off
microphone protecting cap. Connect this assembly to LEMO microphone connector. If
microphone extension cable is to be used, insert it between microphone preamplifier and
microphone connector. Place windscreen on the microphone, if necessary.
External power supply is optional. External AC mains adaptor or external battery, or
internal battery can be used to power the instrument. Turn the instrument on. Default
instrument setup is specified in chapter 2.3.Now it is recommended to perform acoustic
calibration of the instrument as described in chapter 5.3.After measurements
completion, turn the instrument off and place protecting cap on the microphone.
Summary of Contents for DSA 50
Page 17: ...info tursdaletechnicalservices co uk 17...
Page 19: ...info tursdaletechnicalservices co uk 19 measured with WK 21 microphone installed...
Page 48: ...info tursdaletechnicalservices co uk 48...
Page 49: ...info tursdaletechnicalservices co uk 49...
Page 50: ...info tursdaletechnicalservices co uk 50...
Page 51: ...info tursdaletechnicalservices co uk 51 Appendix B Directional responses...
Page 52: ...info tursdaletechnicalservices co uk 52...
Page 53: ...info tursdaletechnicalservices co uk 53 Appendix C Sensitivity to vibration...