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4-channel and 2-channel
Module Differences
10 Digitizer Module Set-up
Continuous voltages in a test set-up where the user has access to module
connectors and test signal cable ends are restricted to:
•
60 Vdc
•
30 Vac-rms
•
42.4 Vac peak of a continuous, complex waveform
Continuous voltages in test set-ups where the module connectors and the test
signal cables connected to them are made non-accessible are:
•
256 Vdc, 240 Vdc floating
•
256 Vac peak
Transient voltages:
•
Transient voltages are permitted providing the maximum amount of
charge transferred into a human body that contacts the voltage under
normal conditions, does not exceed 45 uCoulombs (45 uA-s).
Overload voltages (opens channel input relay):
Range
62 mV to 4V
16V to 256V
•
The E1564A 4-Channel Digitizer has four selectable input filters per
channel (1.5 kHz, 6 kHz, 25 kHz and 100 kHz) that can be enabled.
•
The E1563A 2-Channel Digitizer has a fixed 25 kHz input filter per
channel that can be enabled.
•
The E1564A 4-Channel Digitizer has a calibration bus output
(High, Low and Guard) and a programmable short.
•
The E1563A 2-Channel Digitizer does not have a calibration bus
output however, a programmable short is provided for each channel.
An external calibration source must be provided for calibration.
The HP E1563A and E1564A Digitizers are capable of measuring
voltages up to 256V maximum. Voltage levels above the levels
specified for accessible connectors or cable ends could cause
bodily injury or death to an operator. Special precautions must
be adhered to (discussed below) when applying voltages in
excess of 60 Vdc, 30 Vac rms or 42.4 Vac peak for a continuous,
complex waveform.
Module connectors, and test signal cables connected to them,
must be made NON-accessible to an operator who has not been
told to access them: It is a supervisor's responsibility to advise
an operator that dangerous voltages exist when the operator is
instructed to access connectors and cables carrying these
Voltage Input Condition
High or Low to Guard
Low to Guard
Vmax
>20V
>40V
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