Chapter 3 97
Measurement Synchronization with LXI-B
Setting Up and Executing a List Sweep Measurement
7. Tell the MXG to
expect a list of powers.
:POW:MODE LIST This command is sent
to the MXG.
8. Tell the MXG how
the lists will be entered.
:LIST:TYPE LIST An arbitrary list will be
used instead of range
and step size
arguments.
9. Send the MXG a list
of frequencies
:LIST:FREQ 100 MHz, 200 MHz, 300
MHz, 400 MHz, 500 MHz
This command is sent
to the MXG.
The MXG will put out
signals at these
frequencies and in this
order.
10. Send the MXG a list
of powers
:LIST:POW 0 dBm, -1 dBm, -2 dBm,
-3 dBm, -4 dBm
This command is sent
to the MXG.
The MXG will put out
signals at these powers
and in this order.
11. Turn off signal
modulation.
:OUTP:MOD OFF This command is sent
to the MXG.
12. Turn signal output
on.
:OUTP ON This command is sent
to the MXG.
13. Configure the
MXGâs LXI Output
LAN Event
LXI:EVENt:OUTPut:LAN:DRIVe
âLAN0â,NORMal
LXI:EVENt:OUTPut:LAN:SLOPe
âLAN0â,POS
LXI:EVENt:OUTPut:LAN:SOURce
âLAN0â,âWaitingForTriggerâ
These commands are
sent to the MXG.
Together, these
commands will cause
the MXG to send a
âLAN0â peer to peer
message every time the
WaitingForTrigger
instrument event
changes state.
14. Set the MXGâs
trigger source.
LIST:TRIG:SOUR LAN This command is sent
to the MXG.
15. Enable the MXGâs
LXI LAN Event trigger
TRIG:LXI:LAN:ENABled âLAN1â,1 This command is sent
to the MXG.
The MXG will step
through its list when it
receives a âLAN1â peer
to peer message.