Teledyne LeCroy PXD Series - Manual (Page 8)

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ISSUED: March 2003 901217-01
PXD Series Digitizer
The design of the Digitizer has been verified to conform to EN 61010-1 safety standard per the fol-
lowing limits:
Installation (Overvoltage) Category I: Refers to signal level, which is applicable for equipment
measuring terminals that are connected to source circuits in which measures are taken to limit
transient voltages to an appropriately low level.
Pollution Degree 2: Refers to an operating environment where normally only dry non-conductive
pollution occurs. Occasionally a temporary conductivity caused by condensation must be
expected.
POWER REQUIREMENTS
The Digitizer operates from within a PXI chassis. Power requirements depend on the Digitizer
model as indicated in the PXD Series Digitizer Specifications section of this manual. DC voltages
are supplied to the instrument from the PXI backplane. The instrument requires a variety of DC
currents/voltages as outlined in the Specifications section.
COOLING REQUIREMENTS
The Digitizer relies on externally supplied forced air cooling for proper operation. A minimum air-
flow of 5 cfm (PXD212, 512,1021) or 15 cfm (PXD114, 214, 514, 522, 1022) to the Digitizer’s air
inlet at a temperature between 0 °C and 40 °C must be provided by the PXI chassis. The user
should ensure that the PXI chassis can satisfy these airflow requirements.
GROUNDING REQUIREMENTS
To conform to the applicable safety and EMC requirements, ensure that the Digitizer instrument
panel and the PXI chassis are "earth" grounded.
CAUTION
Disconnect power to the PXI Chassis before installing or removing the
Digitizer.
CAUTION
The outer shells of the front panel terminals (CH1, CH2, CH3, CH4, EXT) are
connected to the instrument’s chassis and, therefore, to the safety ground.