VXi VT1529A/B 사용자 설명서

Set the Voltage Source to +5.000 V. Send the MEAS:VOLT:EXCitation? 
(@<ch_list>) command to the VT1422A. The expected measurement value 
is approximately +2.5 V on each channel.

Check that the Dummy Load is wired and working correctly and firmly 
seated in the RJ-45 input connector. If all 8 channels of one block of 
VT1529A/B channels are failing, check that the Voltage Source is 
connected to the correct terminals on the Bridge Excitation input on the 
VT1529A/B.

This test verifies the operation of the internal bridge completion resistors 
and associated switches in the VT1529A/B.

The operation of the internal bridge resistors can be measured by 
unbalancing the bridge circuit. The bridge output voltage is a function of the 
resistor value as given by the following formula:

V

sense

 = V

excitation

 * (10.0 / (10.0 + 7.5 + R) - 0.5)

Buffer

To VT1422A

(VT1539A SCP)

X2

Buffer

RJ-45

X2

2:1

Mux

Cal-

Cal+

8-pin Telcom

Connector (RJ-45)

Cal-

Cal+

350

120

customer

10K

10K

10K

10K