BRUEL & KJAER 2006 User Manual

and Sg 2 are set to the same peak voltage by means of the 2006. Sg 1 is
set to square wave modulation while Sg 2 is unmodulated.
The Heterodyne Voltmeter Type 2006 is then tuned to the signal of the
unmodulated signal generator Sg 2 and switched to modulation measure-
ments (see section 4: Operation).
The amplitude of the total signal is increased (dB) until 3 % modulation
is measured arising from the crossmodulation with the signal from Sg 1.
Re 4. Sensitivity to noise through the mains can be measured with a set-up
as shown in Fig. 4.4.
The Heterodyne Voltmeter Type 2006 is connected alternately to the
measuring points A and B. The set-up shown in Fig. 4.4 is used to check
that a noise voltage from the mains is attenuated 40 dB at the output
~---------------------
I Mains
HFD
A
D.l)JFI
I
I
I
I
I
I
I
____ j
1 Signolgenerotor
~0'{ ~
: ~ c ~ - - 0 --;_- i ' ~ " i!i
•• l i.
u'J
~ } .... ·IE----------'1
"t9 dd7
Fig. 4.4. Measurement of sensitivitu to noise through tlze mains.
~0 ~
~ :~:. -~--6 -~ • "': ~: ~
2 008
A ntennaplug
loaded
with
the antenna
impedance
'r!. 9o /., -
Fig. 4.5. Set-up for measuring oscillator voltage on the antenna terminals of
a radio receiver.
20

BRUEL & KJAER 2006 Specifications

General

Brand	BRUEL & KJAER
Model	2006
Category	Measuring Instruments
Language	English