Keysight U3606A, Руководство пользователя и сервисное руководство

Страница: 52 / 293

2 Digital Multimeter Operation
Making Measurements
30 U3606A User’s and Service Guide
Measuring DC current
1 Press to make DC current measurement. (The DC annunciator is
shown on the display.)
2
Connect the red and black test leads to input terminals
I
(red) and
LO (black) respectively as shown in Figure 2- 2 .
3
Probe the test points and read the display.
Table 2-3 DC current measurement summary
Item Description
Available ranges 10.0000 mA, 100.000 mA, 1.00000 A, 3.0000 A
Measurement method Sigma Delta A-to-D converter
Burden voltage and shunt
resistance
• < 0.2 V, 10
Ω
for 10 mA range
• < 0.2 V, 1
Ω
for 100 mA range
• < 0.3 V, 0.1
Ω
for 1 A range
• < 0.7 V, 0.01
Ω
for 3 A range
Input protection Protected with a 3.15 A/500 V, FF fuse
I
DC annunciator