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11-6
Digital I/O, Analog Outputs, and External Feedback
Perform the following steps to set the digital output pattern from the front panel:
1.
Press SHIFT and then CONF-LIM to access the limits menu.
2.
Press the
or
until “LIMIT:PASS” is displayed.
3.
Press ENTER. The present digital output pattern value will be displayed.
4.
Use the
,
,
and
keys to display the desired output pattern value (0 to 15), and press
ENTER.
5.
Press EXIT to return to the normal display state.
SCPI programming — digital output pattern
Programming example
The following command sequence sets output lines 4 and 2 HI, and output lines 3 and 1 LO.
SOUR2:TTL 10
‘ Set output lines 4 and 2 HI.
SOUR2:TTL?
‘ Request output pattern value.
Table 11-1
SCPI commands — digital outputs
Command
Description
Default
SOURce2
SOURce2 Subsystem:
:TTL <NRf> or <NDN>
Specify 4-bit digital output pattern (see “Parameter Values”).
15
:TTL?
Query the digital output pattern. The value returned is in the
decimal format.
Parameter Values (see Note):
<NRf>
= 0 to 15
Decimal format
<NDN> = #Bxxxx
Binary format (each x = 1 or 0)
= #Hx
Hexadecimal format (x = 0 to F)
= #Qxx
Octal format (x = 0 to 17)
Note: The <NDN> parameter type can be used to set the output pattern using non-decimal values. Convert the decimal
value to its binary, hexadecimal or octal equivalent and include the appropriate header (#B, #H or #Q). For example,
to set output lines 4 and 2 HI using the binary format, send SOURce2:TTL #B1010. More information about the
<NDN> parameter type is provided in Section 13 (see “Programming Enable Registers”).
Summary of Contents for 6514
Page 203: ...14 CommonCommands...
Page 207: ...15 SCPISignalOriented MeasurementCommands...
Page 235: ...18 PerformanceVerification...
Page 254: ...19 Calibration...
Page 274: ...20 RoutineMaintenance...
Page 278: ...A Specifications...
Page 282: ...B StatusandErrorMessages...
Page 288: ...C GeneralMeasurement Considerations...
Page 294: ...D DDCEmulationCommands...
Page 299: ...E ExamplePrograms...
Page 306: ...F IEEE 488BusOverview...
Page 320: ...G IEEE 488andSCPI ConformanceInformation...
Page 324: ...H CalibrationOptions...