Cryo-con Model 24C
Remote Programming Guide
Input Commands
The INPUT group of commands are associated with the configuration and status of
the four input channels.
Parameter references to the input channels may be:
Numeric ranging in value from zero to two.
Channel ID tags including CHA or CHB.
Alphabetic including A or B.
INPut?
{A | B | C | D} or
INPut
{A | B | C | D}
:TEMPerature?
The INPUT query reports the current temperature reading on any of the input
channels. Temperature is filtered by the display time constant filter and
reported in display units. Query only.
INPut
{A | B | C | D}
:UNITs
{
K
|
C
|
F
|
S
}
Sets or queries the display units of temperature used by the specified input
channel. Units may be K for Kelvin, C for Celsius, F for Fahrenheit or S for
primitive sensor units. In the case of sensor units, the instrument will
determine if the actual units are Volts or Ohms based on the actual sensor
type.
INPut
{A | B | C | D}
:NAMe Name String"
Sets or queries the name string for the selected input channel. The name
string can be up to 15 ASCII characters. The string is used to name the input
channel in order to clarify it's use.
INPut
{A | B | C | D}
:SENPr?
The INPUT:SENPR query reports the reading on a selected input channel.
For diode sensors, the reading is in Volts while resistor sensors are reported
in Ohms. The reading is not filtered by the display time-constant filter.
However, the synchronous input filter has been applied. Query only.
INPut
{A | B | C | D}
:VBIas
{10MV | 3.0MV | 1.0MV | 300UV}
Sets or queries the constant-voltage mode voltage used on the specified
input channel. This value only applies to sensors that use constant-voltage
excitation. They are indicated by a sensor type of ACR. If this query is used
with a sensor type other than ACR, it will always return N/A for not applicable.
Note that the 1.0mV setting should only be set extremely low temperature
use.
INPut
{A | B}
:ACEXcite
{
On
|
Off
}
Default: On
Applies to PTC100 and PTC1K sensors only. When AC excitation is selected
a square-wave is used for sensor excitation. This is the default and gives best
accuracy. In some systems, the AC excitation waveform can be picked up by
sensitive equipment. In this case, AC excitation should be turned off.
123
