Fluke Biomedical ESA180 - Manual (Page 19)

Introduction and Specifications
Instrument Familiarity
1
1-9
Table 1.2. Components and controls of the Analyzer (cont.)
F
Lift Ground/ISO
Test Switch
This is a dual-function momentary switch that
must be held in position while performing the
test. The OPEN GND position will open ground
to the device for leakage current
measurements. The ISO TEST position will
energize the selected patient lead at 110
percent line voltage, current limited, to measure
the isolation current when the main FUNCTION
switch is in the LEAD ISO position. With the
FUNCTION switch in the DUAL position, the
isolation test voltage is supplied to the DUAL
connector for measuring the isolation current of
a probe or transducer.
G Function Switch
Provides direct, one-step selection of the
measurement to be made. These are line V ac,
instrument current, grounding resistance,
ground (internal) and chassis (external)
leakage currents, and the patient leakage
currents. These include lead to ground
(source), lead to lead (auxiliary) and isolation
(sink) current. A dual position is provided to
measure leakage current between two points or
isolation current of probes and transducers
independent of their instruments.
H Lead Switch
Directs the selected patient lead measurement
to the desired lead. When testing a 10-lead
device, a second pass will be required for the C
leads.
I Meter
This is a large, ½ inch, high-contrast LCD, 3½-
digit display of the measured parameter. This
will read up to 1999 with decimal points added
where required.
J
Universal
Patient Lead
Terminals
Provide means for connection of the patient
leads for leakage current measurement.