Cardcal; Readtemp; Reftemp; Rescal - HP E1313A Manual

Note
Appendix D
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Apply power to the HP E1413 and allow 1 hour for its temperature to
stabilize before issuing the

CARDCAL?

Returns the results of the latest
Response Register (base+08
the same as those in the Error Flag Word (see the table on page 358).

READTEMP

Reads the value of the reference junction temperature (either measured or
set with the

REFTEMP

command). The value is returned in the FIFO buffer
as a 32-bit IEEE floating-point number (degrees C). Temperature range is
±128 °C.
REFTEMP < highword
Sets the reference temperature value used for thermocouple compensation.
The concatenation of < highword
number in Motorola format interpreted as degrees Celsius. The principal
use of this command is in situations where the reference junction is
servo-controlled to a fixed value and is never measured.
highword
RESCAL < > <
Tells the CPU the value of the on-card resistance reference, as measured by
an external DMM. The concatenation of
IEEE floating point number in Motorola format representing resistance in
ohms. Nominal value of the on-card resistor is 7500.0 Ohms.

RESIST

The Calibration Bus Relay and the Ohm Relay switched to allow 4-wire
ohms measurement of the on-card reference resistor by an external DMM
using Calibration Bus connectors.
CARDCAL command.
command via the Query
CARDCAL
). The meaning of the bits in the response is
16
> < lowword >
> and < lowword > is an IEEE floating point
lowword
>
highword
< >
Register-Based Programming
1030
16
2000
16
2010
16
1040
16
and lowword is an
< >
4020
16
365