VXi VT1529A/B 사용자 설명서

112 Programming the VT1422A for Data Acquisition and Control

To set channels 0 through 15 to measure resistances greater than 8,000

and set channels 16, 20, and 24 through 31 to measure resistances less than
8k (in this case paired to current source SCP channels 32 through 57):

OUTP:CURR:AMPL 30e-6, (@132:147)

set 16 channels to output 30

μA for 8 kΩ or greater resistances

SENS:FUNC:RES 30e-6, (@100:115)

link channels 0 through 15 to resistance EU conversion (8 k

Ω or greater)

OUTP:CURR:AMPL 488e-6, (@148,149,150:157)

set 10 channels to output 488

μA for less than 8 kΩ resistances

SENS:FUNC:RES 488e-6, (@116,120,124:132)

link channels 16, 20, and 24 through 32 to resistance EU conversion
(less than 8 k

Ω)

Linking Temperature

Measurements

To link channels to temperature EU conversion, send the
[SENSe:]FUNCtion:TEMPerature <type>, <sub_type>,
[<range>,](@<ch_list>) command.

•

The <ch_list> parameter specifies which channel(s) to link to the

temperature EU conversion.

•

The <type> parameter specifies RTD, THERmistor, or TC (for

Thermo-Couple)

•

The optional <range> parameter can be used to choose a fixed A/D

range. When not specified (defaulted), the module uses auto-range.

RTD and Thermistor Measurements

Temperature measurements using resistance type sensors involve all the
same considerations as resistance measurements discussed in the previous
section. See the discussion of Figure 4-5 in "Linking Resistance
Measurements."

For resistance temperature measurements, the <sub_type> parameter
specifies:

•

For RTDs; "85" or "92" (for 100 ohm RTDs with 0.00385 or 0.00392

ohms/ohm/°C temperature coefficients respectively).

•

For Thermistors; 2250, 5000, or 10000 (the nominal value of these

devices at 25 °C).