Preliminary steps, Preparing the analyzer for use, Wx warning – Fluke Biomedical ESA180 User Manual
Page 25: Figure 2-1. block diagram of a typical dut
Operation, Maintenance, and Service
Preliminary
Steps
2
2-3
Preliminary Steps
The Analyzer measures electrical parameters, as described below. These
voltages and currents are a natural phenomenon, and their presence within
reasonable limits does not constitute a hazard. However, it is necessary to
measure their values to determine if there is a significant change from previous
measurements or from the device specifications.
Figure 2-1 is a block diagram of a typical line-operated instrument with patient
connections. All measured parameters are labeled, and the following topics are
keyed to the labels in the diagram.
Hot
N
e
u
tral
Gro
u
nd
Earth
Enclos
u
re
Chassis
120/220
V
AC
Gro
u
nded
Data and
Control
Circ
u
its
Isolated
Patient
Circ
u
its
I
E
I
L
Z
I
R
G
R
L
V
L
C
L
C
L
Z
L
I
C
I
A
I
I
I
P
fat02.eps
Figure 2-1. Block Diagram of a Typical DUT
Preparing the Analyzer for Use
WX
Warning
To avoid possible electric shock, burning of the skin, or
personal injury to the patient, disconnect all patient
connections to the device before starting the following
procedure.