NPI SEC-05LX, Operating Instructions Manual

Page: 33 / 69

29
REAR PANEL
ELEMENTS
SWITCHING OUTPUTS SWITCHING OUTPUTS (see Fig. 3)
These outputs provide signals for tuning
of the switched operation modes (V and
C modes). In the V and C modes these
signals are necessary for tuning the
capacity compensation (see following
chapter).
· SW FREQUENCY MONITOR:
BNC-connector monitoring the
selected switching frequency (+5V
pulses), used to trigger the
oscilloscope which displays the
switching pulses.
· ELECTRODE POTENTIAL
(VEL):
BNC connector monitoring
the electrode potential, i.e. the
response of the electrode to the
discontinuous current injection
GROUND / PROTECTIVE EARTH GROUND / PROTECTIVE EARTH
Connectors; see also 29 .
In order to avoid ground loops, the
internal zero (ground) signal of the
instrument is not connected to the mains
ground and the cabinet. The cabinet and
mains ground are connected to the
green/yellow connector, the internal
ground is connected to the yellow
connector.
CAUTION: (see also page 2)
· Always use a three-wire line cord and
a mains power-plug with a protection
contact connected to ground.
· Before opening or closing the
connection between the GROUND /
EARTH plugs disconnect mains
power-plug.
SERIAL NUMBER SERIAL NUMBER / TYPE / DATE
In this field the serial number, type and
date of production of the instrument are
indicated.