OUTPut OUTPut
:TiLTrg<n>[:STATe]
This command controls the TTL <n> trigger line driver output.
The
suffix <n> is in the range 0 to
7.
Parameters
I
Name
1
Type
1
Values
1
Parameter
Comments
w
:TTLTrg
ON/1:
The TTL line is driven by the
HP
E1440A
w
:TTLTrg
OFF/O:
The TTL line driver is in a high impedance sta
and the line is available to be used by another test instrument
w
Every TTL trigger line is associated with one of two possible
sources (see next sub-command).
Parameter
w
The HP E1440A limits the number of "ON" TTL lines to one per
source.
Range
of
:TTLTrg<n>:SOURce
This command selects the source for the TTL trigger line <n> driver
output. The suffix <n> is in the range 0 to
7.
w
Parameters
Parameter Description
SYNC
If the specified TTL line driver is enabled, the TTL
output is driven by the SYNC signal. Only one
driver linked to SYNC may be enabled at
a
time.
MARKer
If the specified TTL line driver is enabled, the line
is driven by the sweepllist marker signal. Only one
driver linked to MARKer may be enabled at a time.
Note
1. It is permissible to have one SYNC and one MARKer signal set to
$
ON at the same time. But two or more SYNCIMARK lines set to
ON at the same time is not allowed.
2.
The VXI back plane limits the TTL-trigger signal to a frequency
of SlOMHz.
If
one TTLTrig is ON and has SOURce SYNC, then the
maximum frequency of the instrument is 10MHz. If current FREQ is
>10MHz, then no SYNC trigger can be switched
ON.
:TiLTrg<n>:AOFF
This command switches OFF
all
TTL trigger lines.
5-
14
Command
Reference
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