Lake Shore Model 340 Temperature Controller User’s Manual
Remote Operation 9-27
BUSY? Query Instrument Busy Status
Input: BUSY?
Returned: <instrument busy status>. Format: n[term]
Remarks: Indicates that the instrument is busy performing a lengthy operation like generating a SoftCal
curve, writing to the Flash chip, etc. Commands that use the Instrument Busy Status say so
in their description.
CDISP Configure Control Loop Display Parameters
Input: CDISP <loop>, [<number of loops>], [<resistance>], [<current/power>], [<large output
enable>]
Returned: Nothing
Remarks: Configures control loop portion of the display.
<loop> Specifies which loop to configure.
<number of loops> Specifies how many loops to display. Valid entries: 0 = no loops,
1 = loop 1, 2 = loop 2, 3 = both loops.
<resistance> Specifies heater load resistance. Valid entries: 1 - 1000.
<current/power Specifies whether heater output displays in current or power. Valid
entries: 1 = current, 2 = power.
<large output enable> Disables or enables the large output display.
Example: CDISP 1, 1, 25, 0, 1[term] - Control Loop 1 displays using 25 Ω to determine maximum
power output. The output displays in current and in large numbers.
CDISP? Query Control Loop Display Parameters
Input: CDISP? <loop>
Returned: <number of loops>, <resistance>, <current/power>, <large output enable>
Format: n,nnnn,n,n[term]
Remarks: Returns parameters for a control loop display. See the CDISP command for parameter
descriptions. <loop> specifies which loop to query.
CFILT Configure Control Filter
Input: CFILT <loop>, [<off/on>]
Returned: Nothing
Remarks: Configure the control filter.
<loop> Specifies which loop to configure.
<off/on> Specifies whether the control filter is off or on.
Example: CFILT 1, 10[term] - The control filter on Loop 1 is turned on. The control loop filter uses the
same filter window and number of filter points as the input chosen as the control channel.
CFILT? Query Control Filter
Input: CFILT? <loop>
Returned: <off/on>. Format: n[term]
Remarks: Returns the control filter configuration. See the CFILT command for parameter descriptions.
<loop> specifies which loop to query.
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