Chapter 3 – Measurement Set-up Menu
Measurement Set-up Menu
3–6
Brüel & Kjær2238 Mediator
User Manual
● Seconds: Can be set from 0 to 59 in one second steps
Note: Minimum measurement time is 30 seconds.
Calculated Measurement Time
The Meas. Time field is for read-out only and cannot be
accessed. It shows the total execution time for the sequence,
based on the specified number of measurements and the pre-
set time.
3.1.6 Setting up the Input/Output Function
The Input/Output Window controls the function of the
Aux 1 and Aux 2 inputs/outputs. See Fig. 3.5.
Setting Up Aux 1
In the Aux 1 field you can select:
● AC Output
● DC Input
AC Output is used for switching the AC output signal to the
Aux 1 socket. Frequency weighting depends on the
Freq. Wgt. field (see below). Full-scale indication corre-
sponds to 1 V RMS and the output is attenuated according to
the selected range. This output signal can be used, for exam-
ple, for recording the measured signal on a DAT recorder.
DC Input is used to set up the Aux 1 input to a DC Input.
The external DC input must be in the range 0 to 4 V and the
resolution is 5 mV. The DC input signal is displayed in the
Fig.3.5 The Input/Output Window
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