DPA-2FX User Manual
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version 1.8
page 5
Figure 1: PWR-03D front panel view
Figure 2: PWR-03D rear panel view
Note
: This power supply is intended to be used with npi EPMS-E systems only.
2.5. System
Grounding
EPMS-07
The 19" cabinet is grounded by the power cable through the ground pin of the mains
connector (= protective earth). In order to avoid ground loops the internal ground is isolated
from the protective earth. The internal ground is used on the BNC connectors or GROUND
plugs of the modules that are inserted into the EPMS-07 housing. The internal ground and
mains ground (= protective earth) can be connected by a wire using the ground plugs on the
rear panel of the instrument. It is not possible to predict whether measurements will be less or
more noisy with the internal ground and mains ground connected. We recommend that you
try both arrangements to determine the best configuration.
EPMS-E-07
The 19" cabinet is connected to the PROTECTIVE EARTH connector at the
rear panel. The chassis is linked to protective earth only if the PWR-03D is
connected. It can be connected also to the SYSTEM GROUND (SIGNAL
GROUND) on the rear panel of the instrument (see Figure 3).
Important:
: Always adhere to the appropriate safety measures.
Figure 3: Rear panel connectors of the EPMS-E-07
2.6. Technical
Data
19” rackmount cabinet, for up to 7 plug-in units
Dimensions:
3U high (1U=1 3/4” = 44.45 mm), 254 mm deep
EPMS-07
Power supply: 115/230 V AC, 60/50 Hz, fuse 2 A / 1 A slow, 45-60 W
EPMS-E-07
External power supply (for EPMS-E):
115/230 V AC, 60/50 Hz, fuse 1.6/0.8 A, slow
Dimensions of External power supply:
(W x D x H) 225 mm x 210 mm x 85 mm
