E-502 Connectors Description; Connector Analog; Fig. 4-2: The Location Of The "Common Wires" Circuits On The E-502 Board - L-Card ADC Series User Manual

Цифровые
Digital signals
сигналы
(DGND)
CPLD
Элементы
DAC
ЦАП
elements
Aналоговые
Analog
сигналы
signals
(AGND)

Fig. 4-2: The location of the "common wires" circuits on the E-502 board

In particular, GND is a common wire for internal interfaces UART, JTAG Blackfin, JTAG
ARM.
If you use a separate E-502 board without a chassis
(CHASSIS), it is recommended to connect it to the solid metal surface of the chassis (case
construction). Two right ports of
circuit, and two left ports of
are used to secure the E-502 board.

4.4. E-502 connectors description

4.4.1. Connector Analog.

Connector Analog is a 37-pin 2-row type DRB-37M plug on the front panel of the E-502. The
conductive connector contact piece (shield) is electrically connected to the GND signal ground
circuit. On the shield of the cable part of the connector, the shield of the signal cable can be directly
sealed. The connector Analog shield does not have a contact with AGND, DGND and other circuits
of the Analog connector.
3
Here we do not consider the usage accuracy of the certified Measuring Device without a standard chassis.
Корпус
Connector
разъёма
chassis
(CHASSIS)
D I G I T A L
ADSP-
UART
BF523
(GND)
1
FPGA
Cyclone
1
IV
SDRAM
A N A L O G
Корпус
Connector
DI_SYN1
разъёма
chassis
(DGND)
(CHASSIS)
3.05 mm on fig. 4-2 have a metal coating connected to a CHASSIS
3.05 mm are isolated from the other circuits. These 4 mounting ports
0 V
Гальванический
Galvanic barrier
барьер
JTAG Blackfin
(GND)
JTAG ARM
(GND)
1
ARM
LPC4337
GHASSIS
Изололированные
Isolated Ethernet
входы Ethernet
inputs
3
in the embedded chassis circuit applications
Отв. 3,05 мм
Port Ø3,05 mm
GHASSIS
USB
(GND_USB)
Отв. 3,05 мм
Port Ø3,05 mm
GHASSIS