Agilent Technologies U2751A manual Pin Backplane Connector Pin Configuration, Description

Getting Started 1

55-Pin Backplane Connector Pin Configuration

The 55-pin backplane connector is used when the U2751A module is inserted into the U2781A USB modular instrument chassis. For more details, refer to the Agilent U2781A USB Modular Instrument Chassis User's Guide.

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

F

NC

NC

NC

NC

NC

NC

NC

NC

VBUS

GND

USB_D–

E

GND

TRIG3

GND

TRIG2

GND

TRIG1

GND

TRIG0

GND

GND

USB_D+

D

TRIG4

GND

TRIG5

GND

TRIG6

GND

TRIG7

GND

+12 V

+12 V

GND

C

nBPUB

CLK10M

GND

STAR_TRIG

GA2

GA1

GA0

NC

+12 V

+12 V

+12 V

B

NC

NC

NC

NC

NC

NC

NC

NC

+12 V

+12 V

+12 V

A

11

10

9

8

7

6

5

4

3

2

1

Figure 1-555-pin backplane connector pin configuration

Table 1-2Synchronous Simultaneous Interface (SSI) connector pin

description

SSI timing signal

Functionality

GND

Ground

NC

Not connected

VBUS

USB bus power sensing input

USB_D+, USB_D–

USB differential pair

TRIG0~TRIG7

Trigger bus

+12 V

+12 V power with 4 A current

nBPUB

USB backplane input detect

CLK10M

10 MHz clock source

STAR_TRIG

Star trigger

GA0,GA1,GA2

Geographical address pin

U2751A User’s and Service Guide 29