2
Operation and Features
Table 2-2 Time delay set for each range when auto delay is enabled
Memory list commands execution
Since each channel runs independently, if one channel is executing
commands from its active memory list, the other channels will remain in
idle state. When a channel is busy executing the active memory list
commands, any command sent to this channel will be ignored by the
instrument. There are two ways to execute the commands in the active
memory list: through an external trigger or a remote trigger command.
Execute commands from memory list using an external trigger
To perform an external triggering, the U2723A USB Modular Source
Measure Unit must be slotted into a U2781A chassis. Next, the channel
needs to be configured and armed. An external trigger pulse is sent to the
backplane of the chassis to trigger the channel, and the channel will start
to execute commands from the memory list (when trigger signal is
received). If the channels are armed and triggered at the same time, they
will run in parallel.
54
I-range
2 V range
1 μA
10
10 μA
4
100 μA
0.8
1 mA
0.5
10 mA
0.5
120 mA
0.5
Auto delay (ms)
Source V
20 V range
10
4
0.8
0.5
0.5
0.5
Source I
2 V range
20 V range
20
20
20
20
20
20
1
1
1
1
1
1
U2722A/U2723A User's Guide