Keysight U2781A User Manual

Keysight U2781A User Manual Manual pdf 25 page image

Features and Functions 2Keysight U2781A User’s Guide 25USB Backplane55-Pin Backplane Connector Pins Configuration11 GND +12 V +12 V GND USB_D+ USB_D- GND10 GND +12 V +12 V +12 V GND GND GND9 GND +12 V +12 V +12 V GND USB_VBUS GND8 GND LBL0 BRSV GND TRIG0 LBR0 GND7 GND LBL1 GA0 TRIG7 GND LBR1 GND6 GND LBL2 GA1 GND TRIG1 LBR2 GND5 GND LBL3 GA2 TRIG6 GND LBR3 GND4 GND LBL4 STAR_TRIG GND TRIG2 LBR4 GND3 GND LBL5 GND TRIG5 GND LBR5 GND2 GND LBL6 CLK10M GND TRIG3 LBR6 GND1 GND LBL7 GND TRIG4 GND LBR7 GNDZ A B C D E FTable 2-1 Pin information of SSI connectorSSI timing signal Functionality+12V +12 V power from backplaneGND GroundBRSV Reserved pinTRIG0~TRIG7 Trigger bus 0 ~ 7STAR_TRIG Star triggerCLK10M 10MHz reference clockUSB_VBUS USB bus power, +5 VUSB_D+, USB_D– USB differential pairLBL <0..7> and LBR <0..7> Reserved pinGA0, GA1, GA2 Geographical address pin