Model 2790 SourceMeter
®
Switch System Reference Manual
4-7
Setting digits
Even though the parameters for the DIGits command are expressed as integers (4 to 7),
you can specify resolution using a real number. For example, to select 3 digit resolution,
let <n> = 3.5. Internally the instrument rounds the entered parameter value to the nearest
integer.
As implied by the commands in
, each mainframe input function can have its
own unique digits setting.
Digits programming examples
Example #1
— The following commands set digits for DCV and ACI:
VOLT:DIG 5.5
' Set DCV to 5 digits.
CURR:AC:DIG 4
' Set ACI to 3
digits.
Example #2
— The following command sequence configures channels 101 through 110
of the Model 7702 to select 4 digits when they are scanned.
FUNC 'RES' (@101:110)
' Select
Ω
2 function.
RES:DIG 4.5,(@101:110)
' Set scan channels to 4
digits.
Table 4-3
Digits commands
Commands*
Description
Default
[SENSe[1]]
Optional root command.
:VOLTage[:DC]:DIGits <n> [, <clist>]
Set # of digits for DCV; <n> = 4 to 7.
7
:VOLTage:AC:DIGits <n> [, <clist>]
Set # of digits for ACV; <n> = 4 to 7.
6
:CURRent[:DC]:DIGits <n> [, <clist>]
Set # of digits for DC1; <n> = 4 to 7.
7
:CURRent:AC:DIGits <n> [, <clist>]
Set # of digits for ACI; <n> = 4 to 7.
6
:RESistance:DIGits <n> [, <clist>]
Set # of digits for
Ω
2; <n> = 4 to 7.
7
:FRESistance:DIGits <n> [, <clist>]
Set # of digits for
Ω
4; <n> = 4 to 7.
7
:TEMPerature:DIGits <n> [, <clist>]
Set # of digits for TEMP; <n> = 4 to 7.
6
:FREQuency:DIGits <n> [, <clist>]
Set # of digits for FREQ; <n> = 4 to 7.
7
:PERiod:DIGits <n> [, <clist>]
Set # of digits for PERIOD; <n> = 4 to 7.
7
Channel list parameter:
7702 <clist> = (@SCH)
where:
S
= Mainframe slot number (1 or 2)
CH = Switching module channel number (must be 2 digits)
7751/7752/7753 <clist> (DCV,
Ω
2,
Ω
4) = (@Mn) (see
).
* The <clist> parameter is used to configure one or more 7702 channels for a scan. Each channel in the <clist> must be set to
the function specified by the digits command. If not, a conflict error (-221) will occur. For example, VOLTage:AC:DIGits
4.5, (@101) is only valid if scan channel 101 is set for the ACV function.
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