Automating Measurements
Operator Interaction
User-Defined
TTL
Input/Output
The USER TTL port can be used as a general-purpose input or output. Like
the
LIMIT
TEST IN/OUT line, the USER TTL IN/OUT line is an open collector
drive. When used as an input, the state of the USER TTL IN/OUT line can be
read with either the SCPI command
“DIAG:PORT:READ?
15,l”
or with the
IBASIC
command
I = READIO(I5,l)
When used as an output, the state of the USER TTL IN/OUT
line
can be set
with either the SCPI command
“DIAG:PORT:WRITE
15,l,value”
or with the
IBASIC
command
WRITE10
15,l;value
The USER TTL IN/OUT port can also be used in conjunction with an external
switch for softkey auto-stepping, or as a “sweep out” port. Be sure that USER
TTL IN/OUT port is configured properly for general-purpose I/O by pressing
(SYSTEM OPTIONS)
&jrw3it
GsnSig
User
TT~
&tiig
Defau,l%
. Or use
the following SCPI command:
SYST:COMM:TTL:USER:FEED
DEFAULT
CAUTION
Be sure to observe static precautions when using this port.
7-34
深圳市盛腾仪器仪表有限公司 Tel:0755-83589391 Fax:0755-83539691 Website: www.Sengt.com
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