Figure 1-2 55-Pin Backplane Connector Pin Configuration; Table 1-1 Ssi Connector Pin Description - Agilent Technologies U2722A User Manual

1 Getting Started
55-pin backplane connector pin configuration
The 55-pin backplane connector is used when the U2722A/U2723A 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
NC NC
GND TRIG3
TRIG4 GND
nBPUB CLK10M
NC NC
11 10

Figure 1-2 55-pin backplane connector pin configuration

Table 1-1 SSI connector pin description

SSI timing signal
GND
NC
VBUS
USB_D+, USB_D–
TRIG0~TRIG7
+12 V
nBPUB
CLK10M
STAR_TRIG
GA0,GA1,GA2
26
GND GND GND
NC NC NC
GND TRIG2 GND
TRIG5 GND TRIG6
GND STAR_TRIG GA2
NC NC NC
9 8 7
GND GND GND
NC NC NC
TRIG1 GND TRIG0
GND TRIG7 GND
GA1 GA0 NC
NC NC NC
6 5 4
Functionality
Ground
Not connected
USB bus power sensing input
USB differential pair
Trigger bus
+12 V power with 4 A current
USB backplane input detect
10 MHz clock source
Star trigger
Geographical address pin
GND GND GND
VBUS GND
USB_D
GND GND USB_D+
+12 V +12 V GND
+12 V +12 V +12 V
+12 V +12 V +12 V
3 1
2
U2722A/U2723A User's Guide
F
E
–
D
C
B
A