Bk-precision 875B - Manual Manuel d'utilisateur télécharger pdf (Page 8)

WCsRs w here C s in th e mea sured va lue and R s is

measured by 2Ω r ange.

NOTE: To avoid possible damage to the instrument, discharge all

capacitors before attemp ting to measure the va lue or

dissipation factor.

2.3.2 Zero Adjustment and Inductance Measurements

200µH, 2mH, 20mH, 200mH range (Ls):

Zero Adjustment & Measurements

(1) Set the power switch to the “on” position.

(2) Set the mode switch to the “LCR” position.

(3) Set the Function/Range switch to the appropriate range for the

inductor under test. If the indu ctance value is unknown, select

the 200µH range.

NOTE: Each range must have zero adjustment performed.

(4) Using a short piece of w ire, such as a paper clip, temporarily

connect the po sitive and nega tive m easurement terminals

together. A lternatively, if t he clip leads w ill b e u sed for the

measurement p lug the m into the banana jacks and connect

the clips together.

(5) Use a small, flat-blade screwdriver and slowly turn the “ 0 Adj”

control to calibrate the display for a zero reading. Remove the

calibration short.

(6) Insert the inductor leads into the component test sockets at the

front of th e meter. If the leads are too short, use t he alligator

clip leads pro vided w ith the instrum ent to connect t o the

inductor.

(7) Read the inductance value in t he d isplay. If “ 1---“ (a one with

the fo llowing 3 d igits b lanked) is shown, move the ra nge

switch to the next higher range until the over range indication is

gone from the display. Repeat steps 4-7.

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Bk-precision 875B - Manual Manuel d'utilisateur Page 8