VXI EX7000 - Manual (Page 20)

VXI Technology, Inc.
20 EX7000 Series Basic Operation
Trigger Bus Connectors
The EX7000 provides an LXI compatible trigger bus connector set on the rear panel of the
instrument. Both connectors have the same pin assignments and are wired in parallel. For more
information on the LXI Trigger Bus and creating an appropriate cable, please visit
www.lxistandard.org and refer to LXI Standard Revision 1.2 and LXI Trigger Bus Cable and
Terminator Specifications Rev 1.1. The trigger bus pin assignments are provided on the next page.
Trigger Bus Connectors
Pin Signal Pin Signal
1 +3.3 V 14 RP_TRIG_P0
2 GND 15 RP_TRIG_N0
3 RP_TRIG_P1 16 RESERVED
4 RP_TRIG_N1 17 RP_TRIG_P2
5 GND 18 RP_TRIG_N2
6 RP_TRIG_P3 19 GND
7 RP_TRIG_N3 20 RP_TRIG_P4
8 GND 21 RP_TRIG_N4
9 RP_TRIG_P5 22 GND
10 RP_TRIG_N5 23 RP_TRIG_P6
11 RESERVED 24 RP_TRIG_N6
12 RP_TRIG_P7 25 RESERVED
13 RP_TRIG_N7
25
13
14
1
Digital I/O Connector
The EX7000 features an 8-channel digital I/O port on the rear panel of the instrument. This port
can be used as a trigger source and as a general purpose output device. The digital I/O connector is
a standard DB-9 with the following pin assignment:
Digital IO Connector
Pin Signal Pin Signal
1 DIO Channel 0 2 DIO Channel 1
3 DIO Channel 2 4 DIO Channel 3
5 DIO Channel 4 6 DIO Channel 5
7 DIO Channel 6 8 DIO Channel 7
9 GND
9
5
6
1
Mating Connector: Tyco 5-747904-2
As a general purpose output device, each DIO channel can be independently programmed with
regards to its output functionality and its static level to assume when enabled as an output. When
not enabled as an output, a channel becomes tri-stated, preventing conflict with other potential
voltage drivers. Reference the port’s electrical specifications in Table 3-1 for voltage tolerance
limits and output drive capabilities. Regardless of output functionality, each channel provides
constant input functionality. That is, the input level on each channel can be accessed without a
specific enable command. Moreover, the base functionality of the DIO channels is not affected by
triggering, scanning, or any other instrument process.