Keithley 2700 - Front Panel Disassembly Procedure; Power Components Removal; Power Transformer Removal; Power Module Removal

Model 2700 Multimeter/Switch System User’s Manual Basic DMM Operation 3-13
Additional error uncertainties are also specified for non-sinusoidal waveforms of specific
crest factors and frequencies. The Model 2700 has capabilities of measuring AC
waveforms of crest factors up to 5.
Figure 3-4
ACV measurements – sine waves
AC coupled RMS:
VP
0
V
P
2
CF =
Sine
Half-Wave Rectified Sine
V
P
0
RMS:
1
VAVG
VAVG = VP/p
V
RMS =
V
P
CF =
2
+V
0
-V
AC coupled RMS:
+V = VP(1 - 1/p)
-V = -V
P/p
V
P
D/2
VP
2
(VP/p)
2
VRMS =
=
(D/2)  (1/p
2
)
VP
D/2
D/2
CF =
(D/2)  (1/
p
2
)
1
VRMS =
Crest Factor:
VP
0
Full-Wave Rectified Sine
RMS:
VP
2
VRMS =
CF =
2
AC coupled RMS:
VRMS =
=
(1/2)  (4/p
2
)
VP
CF =
1
+V
0
-V
+V = V
P(1 - 2/p)
-V = -2V
P/p
2
VP
2
(2VP/p)
2
(1/2)  (4/
p
2
)
-VP
where; D (duty cycle) =
t
T
t
T