Bk-precision 875B - Manual Manuel d'utilisateur télécharger pdf (Page 9)

2H, 20H, 200H, range (Lp): Zero Adjustment & Measurements

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

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

NOTE: These three ranges (Lp mode) must be zero calibrated at

200mH range.

(3) Set the Function/Range switch to the 200mH range.

(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, plug them into t he banana jacks and connect

the clip 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 and a value is obtained.

(8) To mea sure the “ Dissipation Fa ctor” of th e inductor, set the

mode switch to the “D” position, and read the dissipation factor

value in the display.

2.3.3 Resistance Measurements

NOTE: A. The 2, 20, 200, 2K, 20K, 200K, ohm ranges of resistance

needs to be zero adjusted separately.

B. It can not be zero adjusted at 2M and 20M range. There

is always a reading about .120-.140 when input

terminals are shorted to zero adjust, set the range

switch to 200K range and zero adjust.

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Bk-precision 875B - Manual Manuel d'utilisateur Page 9