Delta OHM HD2024, Руководство по эксплуатации

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HD2024
- 8 -
V1.0
6 TECHNICAL SPECIFICATIONS
The HD2024 calibrator complies with IEC 60942-2003 Class 1 and ANSI S1.40-
1984 .
Coupling cavity
For standard ½” (12.7 ± 0.03 mm) microphones
according to IEC 61094-1 and IEC 61094-4
Optional adapter HD2020MA for ¼” microphones
Frequency 1000 Hz
Frequency tolerance 1% in the range -10 ÷ +50 °C and 10 ÷ 90%RH
Sound pressure level 94.0 dB ± 0.3 dB at 1 kHz
(referred to 101.3 kPa, 23 °C ± 3 °C and 65%RH)
Reference conditions
23 °C, 50%RH, 101.3 kPa, microphone capsule
with 10 mm
3
equivalent volume
Stabilization time 10 s
Total distortion < 1%
Ambient condition influence
Temperature and humidity influence
Static pressure influence
< 0.3 dB in the range -10 ÷ 50 °C and 10 ÷ 90%RH
< 0.1 dB in the range 65…108 kPa
Stability levels
Short-term stability
Stability after 1 year with normal use
±0.05 dB
±0.15 dB
Operating conditions -10 ÷ +50 °C / ≤ 90%RH
Storage temperature -25 ÷ +70 °C
Microphone equivalent volume From 5 to 250 mm
3
Power supply 9 V alkaline battery IEC type 6LR61
9 V rechargeable batteries can also be used
Battery autonomy
48 hours of continuous use with good quality al-
kaline batteries
Case material ABS
Dimensions 53 x 43 x 83 mm
Weight 160 g
Protection degree IP 64
Effects of electromagnetic fields < 0.3 dB