DigiTech QC1938 User Manual

User Manual
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10
FallTime
Measure the time between 90% and 10% of the first falling edge of the waveform.
11
+ Width
Measure the time between the first rising edge and the next falling edge at the waveform 50%
level.
12
- Width
Measure the time between the first falling edge and the next rising edge at the waveform 50%
level.
13
+ Duty
Measure the first cycle waveform. Positive Duty Cycle is the ratio between positive pulse
width and period.
14
- Duty
Measure the first cycle waveform. Negative Duty Cycle is the ratio between positive pulse
width and period.
15
Vbase
Measure the highest voltage over the entire waveform.
16
Vtop
Measure the lowest voltage over the entire waveform.
17
Vmid
Measure the voltage of the 50% level from base to top.
18
Vamp
Voltage between Vtop and Vbase of a waveform.
19
Overshoot
Defined as (Base - Min)/Amp x 100 %, Measured over the entire waveform.
20
Preshoot
Defined as (Max - Top)/Amp x 100 %, Measured over the entire waveform.
21
PeriodAvg
Calculate the arithmetic mean voltage over the first cycle in the waveform.
22
FOVShoot
Defined as (Vmin-Vlow)/Vamp after the waveform falling.
23
RPREShoot
Defined as (Vmin-Vlow)/Vamp before the waveform falling.
24
BWidth
The duration of a burst measured over the entire waveform.
25
FRR
The time between the first rising edge of source 1 and the first rising edge of source 2 of 50
voltage level.
26
FFF
The time between the first falling edge of source 1 and the first falling edge of source 2 of 50
voltage level.
27
FRF
The time between the first rising edge of source 1 and the first falling edge of source 2.
28
FFR
The time between the first falling edge of source 1 and the first rising edge of source 2.
29
LRR
The time between the first rising edge of source 1 and the last rising edge of source 2.
30
LRF
The time between the first rising edge of source 1 and the last falling edge of source 2.
31
LFR
The time between the first falling edge of source 1 and the last rising edge of source 2.
32
LFF
The time between the first falling edge of source 1 and the last falling edge of source 2.
Delay settings
When the 8 delay measurements of FRR, FFF, FRF, FFR, LRR, LRF, LFR, and LFF are selected, the source that is selected
in the main menu of measure is the source 1 of delay measurement. In the second page of measurement main menu, select
Settings softkey to enter delay menu, users can set the opened channel to the source 2 of delay measurement.
Gate measurement
In the second page of measurement main menu, select Gate softkey to enter gate menu. Only when the type of measurement
is opened, the gate measurement can be opened.
After opening the gate measurement, the measurement results only measure the waveform between the cursor A and the
cursor B.
2.11. DVM
DVM supports 3-bit voltage and 6-bit frequency measurement of any analog channel waveform. The measurement is always

DigiTech QC1938 Specifications

General

Brand	DigiTech
Model	QC1938
Category	Test Equipment
Language	English