BRUEL & KJAER PULSE 3560-C User Manual

CHAPTER 4
Introduction to Hardware
53
that is not at ground potential and makes contact with the housing of the microphone pream-
plifiers. However, microphone input modules always operate in floating mode for maximum
EMI protection.
Fig.4.5
Avoiding ground-loops
with floating input
Fig.4.6
Avoiding ground-loops in
multichannel structures
050302
PULSE
Front-end
V
CM
Accelerometer grounded ⇒ Input type: Floating
~
Wire connecting
structure and
chassis
LAN
Tx
Rx
RS-232
Cable Lock
!
All Sockets
Aux. I/O
Input
5
2
1
Multi Frame Control
No
Yes
First or Last Frame
Output Tacho
Ext Pow
er
Ba
tte
r
y
s
tatu
s
10 to
32v
Brüel & Kjær
O
n
/
O
f
f
B
a
t
tery
sta
tu
s
Fol
lo
w
E
x
t.
Po
w
e
r
AUX
Power
Off On
050303
Input
Floating
–
+
Ch. 1
Magnetic fields can
induce noise in the
floating channels (1 & 2).
However, the balanced
construction suppresses
the noise with the CMRR
Three channels
Triaxial accelerometer with
common ground connection
via casing
No common mode
noise signal
Input
Floating
–
+
Ch. 2
Input
Single-ended
–
+
Ch. 3

BRUEL & KJAER PULSE 3560-C Specifications

General

Brand	BRUEL & KJAER
Model	PULSE 3560-C
Category	Measuring Instruments
Language	English