Stanford Research Systems SIM983, Operation And Service Manual

Page: 38 / 74

3 – 14 Remote Operation
The value
0
is returned if no button was pressed since the last LBTN? .
A query of LBTN? always clears the button code, so a subse-
quent LBTN? will return
0
.
LBTN? Example:
5
Overload OVLD?
Query the current overload condition. The response is
OVLD? Overloaded
1
Input
2
Input
+
o
ff
set
4
Output
Combination overloads are reported by summing the values of the in-
dividual overload flags. This command complements the OLSR sta-
tus register described in Section 3.5.7, and the three overload flags
correspond one-to-one with bits in OLSR. However, once cleared
by
OLSR? or *CLS , the overload status bits will stay cleared even
though the overload condition may persist and remain reported
by
OVLD? .
OVLD?
Example:
6
implies that the input is not overloaded; the intermediate stage
( V
in
+
V
ofs
) is overloaded; and the output is overloaded.
3.4.8 Interface commands
The Interface commands provide control over the interface between
the SIM983 and the host computer.
Reset *RST
Reset the SIM983 to its default configuration.
*RST sets the following:
• Clock oscillator to stop during idle time ( AWAK
OFF
).
• Gain to
+
1
.
00
.
• O
ff
set to 0.000 V.
• Bandwidth to 0 .
• The token mode to
OFF
.
*RST does not a
ff
ect PSTA , CONS , TERM , and all service-enable
registers ( *SRE , *ESE , CESE , or OLSE ).
SIM983 Scaling Amplifier