Usb Backplane; Pin Information Of Ssi Connector - Keysight U2781A User Manual

USB Backplane

55-Pin Backplane Connector Pins Configuration
11 GND
10 GND
9 GND
8 GND
7 GND
6 GND
5 GND
4 GND
3 GND
2 GND
1 GND
Z
Table 2-1

Pin information of SSI connector

SSI timing signal
+12V
GND
BRSV
TRIG0~TRIG7
STAR_TRIG
CLK10M
USB_VBUS
USB_D+, USB_D–
LBL <0..7> and LBR <0..7>
GA0, GA1, GA2
Keysight U2781A User's Guide
+12 V +12 V
+12 V +12 V
+12 V +12 V
LBL0 BRSV
LBL1 GA0
LBL2 GA1
LBL3 GA2
LBL4 STAR_TRIG
LBL5 GND
LBL6 CLK10M
LBL7 GND
A B
Functionality
+12 V power from backplane
Ground
Reserved pin
Trigger bus 0 ~ 7
Star trigger
10MHz reference clock
USB bus power, +5 V
USB differential pair
Reserved pin
Geographical address pin
Features and Functions
GND USB_D+
+12 V GND
+12 V GND
GND TRIG0
TRIG7 GND
GND TRIG1
TRIG6 GND
GND TRIG2
TRIG5 GND
GND TRIG3
TRIG4 GND
C D
USB_D- GND
GND GND
USB_VBUS GND
LBR0 GND
LBR1 GND
LBR2 GND
LBR3 GND
LBR4 GND
LBR5 GND
LBR6 GND
LBR7 GND
E F
2
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