Fluke 5320A User Manual

5320A
Users Manual
4-14
A second method uses an internal circuit that scans the residual impedance, saves the
value, and then adds it to the selected resistance value.
A third method (5320A/VLC only) uses an internal electronic compensation block that
uses the scanned value to set the compensation value in the block. This compensation
circuit is limited to 25 amps of UUT current. If these values are exceeded, the
compensation block is disconnected and the compensation mode set to OFF. The
maximum impedance compensation depends on the load current, typically 2 Ω at low-
level testing.
Separate loop and line residual impedance correction values are stored in the Calibrator
using the following methods.
To select the residual impedance correction mode:
1. Press the Setup softkey.
2. Select either Loop Impedance or Line Impedance.
3. Using the cursor keys or rotary knob, highlight Line imp. compensation (Loop
imp. compensation for Loop impedance function) and either press the Select
softkey or press in on the rotary knob.
4. Using the cursor keys or rotary knob, highlight OFF, MAN, SCAN or COMP, and
then press the Select softkey or press in on the rotary knob.
OFF – No compensation is used.
MAN – Adds the user defined residual impedance to the selected resistor.
SCAN – Measures the residual impedance and adds it to the selected resistor value.
COMP – Measures the value and electronically subtracts out this residual impedance
by inserting a negative resistance at the input.
5. Press the Exit softkey repeatedly to return to the main screen.
Setting the Manual Residual Impedance Correction Value
To manually enter the residual impedance correction value:
1. Press the Setup softkey.
2. Select either Loop Impedance or Line Impedance.
3. Using the cursor keys or rotary knob, highlight Line imp. MAN value (Loop imp.
MAN value for Loop impedance function) and either press the Select softkey or
press in on the rotary knob.
4. Using the keypad, cursor keys and/or rotary knob, enter the desired residual
impedance correction value.
5. Using the cursor keys or rotary knob, highlight Loop imp. correction and either
press the Select softkey or press in on the rotary knob.
6. Using the cursor keys or rotary knob, highlight MAN
and either press the Select
softkey
or press in on the rotary knob.
7. After confirming the correct value is in the display, press the Write softkey to enter
the correction value into the calibration. To exit without changing the value, press the
Exit softkey.
8. Press the Exit softkey repeatedly to return to the main screen.

Fluke 5320A Specifications

General

Brand	Fluke
Model	5320A
Category	Test Equipment
Language	English