Cryo-con Model 24C Remote Programming Guide
LOOP {1}:RANGe { HI | MID | LOW }
Sets or queries the control loop's output range.
Range determines the maximum output power available and is different for a
50 load resistance than for a 25 load.
Values of heater range for Loop 1 are: Hi,
Mid Low and Min. These correspond to the
output power levels shown here.
The values for loop 2 is 10W,
corresponding to 10W into a 50 load.
LOOP {1 | 2 | 3 | 4}:RAMP?
Queries the unit to determine if a temperature ramp is in progress on the
specified control loop. Note that temperature ramps on the Loop 1 and Loop
2 channels are independent of each other. Query response is ON or OFF.
LOOP {1 | 2 | 3 | 4}:RATe <rate>
Sets and queries the ramp rate used by the selected control loop when
performing a temperature ramp. <rage> is the ramp rate in Units / Minute.
This may be a value between 0 and 100. Rate is in display units per Minute.
LOOP {1 | 2 | 3 | 4}:PGAin <gain>
Sets or queries the selected control loop’s proportional gain term. This is the
P term in PID and is a unit-less numeric field with values between 0 (off) and
1000.
LOOP {1 | 2 | 3 | 4}:IGAin <gain>
Sets and queries the integrator gain term used by the selected control loop.
This is a numeric field with units of seconds. Allowed values are 0 (off)
through 1000 seconds.
LOOP {1 | 2 | 3 | 4}:DGAin <gain>
Sets and queries the differentiator gain term used by the selected control
loop. This is a numeric field with units of inverse seconds. Allowed values are
0 (off) through 1000/Seconds.
Note: Use of the D gain term can add significant noise. It should never be set
to a value greater than 1/4 of the integrator gain.
LOOP {1 | 2 | 3 | 4}:PMANual <pman>
Sets and queries the output power level used by the selected control loop
when it is in the manual control mode. <value> is the desired selected control
loop output power. This is a numeric field in units of percent of full scale.
Actual output power will depend on the loop range setting.
LOOP {1 | 2 | 3 | 4}:OUTPwr?
Queries the output power of the selected control loop. This is a numeric field
that is a percent of full scale.
127
Range
50 Load 25 Load
Hi
50W 25W
Mid
5W 2.5W
Low
0.5W 0.25W
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