Tonghui TH2829 Series - DC Bias Voltage Source; Diode Test; Measurement Accuracy; Z│,│Y│, L, C, R, X, G, B Accuracies

TH2829X Series Operation Manual Chapter 8 Performance and Test
146
Z、R、X、DCR
0.00001Ω～ 99.9999MΩ
Y、B、G
0.00001μs ～ 99.9999S
D
0.00001 — 9.99999
Q
0.00001 — 99999.9
θ
Deg -179.999°～179.999°
Rad -3.14159 ～ 3.14159
Turns Ratio
1：0.001—1000：1
8.2.7 DC bias voltage source
0V— ± 10V Minimum resolution: 0.5mV, Accuracy: 1%xpreset voltage+5mV
0mA—± 100mA Minimum resolution: 5μA
8.2.8 Diode test
Forward voltage: 0 — 9.9999 V
Reverse current: 0 — 99.999 mA
8.3 Measurement accuracy
Test accuracy includes stability、temperature coefficient、linear degree、test
repeatability and calibration inter-error.
Check the accuracy of instrument should be under the following circumstances：
a． warm-up time：≥ 30 min
b． cable：0m ，1m
c． correct open and short correction after warming up
d． DC bias is in the position of “OFF”
e． The range works in “AUTO” to select correct test range
8.3.1 │Z│,│Y│, L, C, R, X, G, B accuracies
The accuracy Ae of │Z│,│Y│, L, C, R, X, G and B are expressed as：
A
e
= ± [A
L
× A+（K
a
+K
b
+K
c
）×100+ K
d
+K
f
]×K
e
[%]
A： basic test accuracy（figure A）
A
L
: level correction factor（table A）
K
a
：impedance rate factor（table B）
K
b
：impedance rate factor（table B）
K
c
：calibrated interpolating factor（table E）
K
d
：cable length factor
K
e
：temperature factor（table G）
K
f
：scan fixture modification factor（no adding：K
f
= 0, adding：K
f
= 0.2）
Using condition of L, C, X, B accuracy A
e
：D
x
（test value of D）≤0.1