Chapter 6 – Specifications
Specifications
BB1224 – 11
63
Type 2239 B
Hand-Arm Vibration Functions User Manual
Displayed parameters updated once per
second.
MEMORY:
40 Records of Overall Results.
Each record stores: A
eq
, A
eq4
, A
eq8
, A
mp
,
A
min
, A
max
, Frequency weighting, Time
and date of measurement, Measurement
duration, and Overload status.
TRANSDUCER:
Type 4505 accelerometer
SERIAL INTERFACE:
Compatible with:
EIA –574
EIA –232–E with 25-pole adaptor
Baud Rate: 9600
Data Bits: 8
Stop Bit: 1
Parity: None
Handshake: XON/XOFF
Result Output Formats:
Buffer (printer format) or all records
(spreadsheet format)
AC OUTPUT
Short-circuit protected coaxial LEMO se-
ries 00 socket
Max. Output: 0.5 V RMS corresponding to
the top of the selected measurement
range
±
3 dB depending on the transduc-
er’s sensitivity
Output Impedance: 100
Ω
Output: Output signal from preamplifier
(unweighted)
CLOCK:
Real-time (calendar) and measurement
duration
Factory set to CET.
WARM-UP TIME:
<10s
REFERENCE CALIBRATION:
Frequency: 159.15 Hz
Acceleration: 10 m/s
2
(gives an indication of 1 m/s
2
when HA
weighted
Fig.6.2 Frequency response with hand-arm vibration weighting
10
100
1k
Frequency (Hz)
10k
1
0.0001
0.001
0.01
0.1
Acceleration m/s
2
1
10
960561e
bb122411.book Page 63 Tuesday, December 11, 2001 2:34 PM