The Maximum Allowable Conditions At The Inputs And Outputs Of Signal Lines; Table 4-4 The Maximum Permissible Modes Are Described For The L-502 Module Installed In The Computer's System Unit; Table 4-5Maximum Permissible Through Current By Gnd, Agnd, Dgnd - L-Card L-502-P-G-D-I User Manual

42
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
Circuit/ Signal
Inputs X1÷X16, Y1÷Y16, GND32
Outputs DAC1, DAC2
Outputs +15 V, -15 V
Inputs DI_SYN1, DI_SYN2
Digital inputs DI1÷ DI16
DO digital outputs
Inputs
CONV_IN,
START_IN

Table 4-5Maximum permissible through current by GND, AGND, DGND

Maximum permissible through-current by the
circuits of one L-502 module:
6
AGND-DGND
GND-DGND (L-502 without galvanic isolation)
GND-AGND (L-502 without galvanic isolation)
Maximum permissible through currents along
AGND-AGND, AGND-DGND, DGND-DGND
circuits of different L-502 modules connected by a
synchronization cable
Test voltage of galvanic isolation
6
The notion of circuits GND, AGND, DGND is introduced in section
the computer's system unit
Maximum permissible modes description
±15 V relative to AGND
± 20 mA when the total load power is not exceeded, see
section 4.6
No more than 30 mA in load circuits when the total load
power is not exceeded, see section
SC is not permitted.
± 10 V relative to the DGND circuit with an internal input
resistance of, at least, 1 kΩ.
From -0.4 to +6.5 V relative to the DGND circuit
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.
From -0.5 to +4.3 V relative to the DGND circuit
100 mA
100 mA
100 mA
50 mA
500 V, 50 Hz during a minute
4.1
Connection of signals.
4.6