HP E1419A User Manual page 283

[SENSe]
Parameters
Comments
282 HP E1419 Command Reference
is used to compensate all subsequent thermocouple measurements until the register
is overwritten by another reference measurement or by specifying a constant
reference temperature with the SENSE:REF:TEMP command. If used, the reference
junction channel must be scanned before any thermocouple channels. Use the
SENSE:REF:CHANNELS command to place the reference measuring channel into
the scan list ahead of the thermocouple measuring channels.
Parameter Parameter
Name Type
type discrete (string)
sub_type numeric (float32)
numeric (float32)
range numeric (float32)
ch_list channel list (string)
•
See "Linking Input Channels to EU Conversion" on page 3-59 for more
information.
•
The <range> parameter: The HP E1419 has five ranges: .0625VDC, .25VDC,
1VDC, 4VDC, and 16VDC. To select a range, simply specify the range value (for
example, 4 selects the 4VDC range). If you specify a value larger than one of the
first four ranges, the HP E1419 selects the next higher range (for example, 4.1
selects the 16VDC range). Specifying a value larger than 16 causes an error.
Specifying 0 selects the lowest range (.0625VDC). Specifying AUTO selects auto
range. The default range (no range parameter specified) is auto range.
•
If you are using amplifier SCPs, you should set them first and keep their settings
in mind when specifying a range setting. For instance, if your expected signal
voltage is to be approximately .1VDC and the amplifier SCP for that channel has
a gain of 8, you must set <range> no lower than 1VDC or an input out-of-range
condition will exist.
•
The <type> parameter specifies the sensor type that will be used to determine the
temperature of the isothermal reference panel. <type> CUSTom is pre-defined as
Type E with 0°C reference junction temp and is not re-defineable.
•
For <type> THERmistor, the <sub_type> parameter may be specified in ohms or
kohm.
•
The *CAL? command calibrates resistance channels based on Current Source
SCP and Sense Amplifier SCP setup at the time of execution. If SCP settings are
changed, those channels are no longer calibrated. *CAL? must be executed again.
Range of
Values
THERmistor | RTD | CUSTom
for THER use 5000
for RTD use 85 | 92
for CUSTom use 1
see comments
100 - 163
Default
Units
none
Ohm
none
none
VDC
none
Chapter 6