L-Card L-502-P-G-D-I, Руководство пользователя

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42 Connection of signals.
4.3. The maximum allowable conditions at the inputs
and outputs of signal lines.
Under the maximum permissible conditions are meant such currents and voltages that do not
lead to failure or irreversible degradation of the characteristics of the L-502. At the same time, the
maximum permissible conditions may not provide the performance characteristics of the product.
!
Long-term operation of equipment at maximum permissible levels is not allowed
Table 4-4 The maximum permissible modes are described for the L-502 module installed in
the computer's system unit
Circuit/ Signal Maximum permissible modes description
Inputs X1÷X16, Y1÷Y16, GND32 ±15 V relative to AGND
Outputs DAC1, DAC2 ± 20 mA when the total load power is not exceeded, see
section
4.6
O15 V, -15 V No more than 30 mA in load circuits when the total load
power is not exceeded, see section
4.6
SC is not permitted.
Inputs DI_SYN1, DI_SYN2 ± 10 V relative to the DGND circuit with an internal input
resistance
of, at least, 1 kΩ.
Digital inputs DI1÷ DI16 From -0.4 to +6.5 V relative to the DGND circuit
DO digital outputs From -0.4 to +3.6 V relative to the DGND circuit, the current
is not more than ± 20 mA. When the power is on, the total
load power should not exceed the calculated value, according
to section
4.6 .
Inputs
CONV_IN,
START_IN
From -0.5 to +4.3 V relative to the DGND circuit
Table 4-5Maximum permissible through current by GND, AGND, DGND
Maximum permissible through-current by the
circuits of one L-502 module:
AGND-DGND
6
GND-DGND (L-502 without galvanic isolation)
GND-AGND (L-502 without galvanic isolation)
100 mA
100 mA
100 mA
Maximum permissible through currents along
AGND-AGND, AGND-DGND, DGND-DGND
circuits of different L-502 modules connected by a
synchronization cable
50 mA
Test voltage of galvanic isolation 500 V, 50 Hz during a minute
6
The notion of circuits GND, AGND, DGND is introduced in section
4.1