All Functional Differences Of E-502 And L-502 - L-Card ADC Series User Manual

3.5. All functional differences of E-502 and L-502.

Functional difference
Structure
Interface with the PC
Intermodule
synchronization interface
2
The second input of
external synchronization
DI_SYN2
Programmable pull-up
resistor of DI
inputs
Galvanic isolation
Cyclic self-oscillator
mode for output to the
DAC and digital output.
Comparing to L-502, in E-502 DAC meteorological characteristics have been improved (s. 5.2)
while reproducing direct and alternate current voltage.
2
The first external clock input DI_SYN1 is available on the external connector in the L-502 and on the Analog connector in the
E-502)
L-502
PCI Express card (installed
inside the PC)
PCI Express 1.0
Uses a different connector.
CONV_IN, START_IN inputs
have constant pull-up resistors
to "zero".
Is present separately on the
internal connector L-502.
Programmable pull-up resistor
of DI_SYN2 input
Is present (separate for the high
digital and low byte)
Not all E-502 modifications
have it
Is supported by PC software
driver.
E-502
External module in relation to the
PC.
USB 2.0
Ethernet (100BASE-TX)
Has a single Digital connector with
digital I/O signals.
The function of the inputs DI15,
DI16 is combined with the function
of the inter-module synchronization
inputs CONV_IN,
respectively.
DI15/CONV_IN, DI16/START_IN
inputs have different programmable
pull-up resistors to "zero" (s.
34
p. ).
Is combined with D14 input.
Programmable pull-up resistor of
DI14/ DI_SYN2 input
No
All E-502 modifications have it
Is supported by the interface ARM
controller LPC4333(4337) within E-
502, a data buffer 2 pages of 1.5
Mcounts.
START_IN,
4.4.2
,