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lntroduction cnd Applicotion
The Model ZP 2 impedonce tesler is used for the simple deierminotion of
impedonces. The scole is colibroted in ohms, ond moy be reod directly. The
tester is especiolly suited for use in oll kinds of motching problems. Becouse
of the instrument's negligible looding, sensitive components, such os micro-
phones, lope heods, ond lronsformers wilh high-permeobility iron cores, con
be meosured wirh o high degree of occurocy. The tester con.olso be used
for ropid determinoiion of R, L, ond C componenis of reoctonce, by using
the following formuloe:
Z L : , ' L
z c :
The motching resistonce of on unlooded ironsformer con be determined by
meosuring the unlooded tronsformer impedonce Zs ond the shorled impe-
donce Z;1 by meons of lhis formulo:
z : V z o . z k
I
0 . \ -
2 5 0 c p s ( a : 2 n t : 1 , 5 7 0 )
1,000 cps (or:
6,280)
4,000 cps (o :25,000)
l Q t o l M Q
40 pf to 650 pf
40 ph to 650 hy
l5o/o with 1.000 cps test
trequency
+ l0o/o with test freouencies
of 250 cps ond 4,000'cps
mox. 90 prVA
7-9 Y
5 - S F T 3 3 7 , 1 - A C 1 1 7
85/sx x6rl8k x41l2a
5.5 lbs
Technicol Doto
Meosuring frequencies
Ronge of meosurement
Resistonces ond impedonces of
Copocitonces of
lnductonces of
Accurocy
Looding on component under test
Permissible power supply ronge
Tronsistors used
Dimensions
Weight
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