L-Card ADC Series, Руководство пользователя

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5.4. Digital outputs.
Parameter Value
Number of digital outputs of general purpose 16
Control of the third state of outputs Byte
Data entry modes Synchronous, asynchronous
Maximum speed in synchronous mode 1 KWords/s
Maximum speed in asynchronous mode the actual speed depends on many
factors of the software and hardware
environment.
Maximum permissible current
7
in the load circuit 20 mA
Recommended current in the load circuit max. 8 mA
Voltage range at digital outputs
0...+0.4 V ("logical zero")
max. 2.4 V ("logical unit").
Output logic elements with a supply
voltage of 3.3 V
Output resistance, typical value 110 Ohm
Maximum leakage current in operating mode in high-impedance
state ±1 µA
High-impedance state with power off No
5.5. Synchronization in E-502.
Parameter Value
The reference frequency of the process of synchronization of data
collection and output of ADC, DAC, digital input and output:
•
For a single module
•
For a multiple module synchronization
1.5/2.0 MHz
1,5 MHz
Limits of the permissible relative fundamental error of the
reference frequency ±0.005
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If the total load power is not exceeded, see s.
4 .8 Ca l cu l atio n o f to ta l lo ad p o wer o f E-50 2
output circuits