YOKOGAWA TA220 User Manual page 70

7.1 DC Output of Jitter Ratio
7-4
DC Output Mode
You can select whether jitter ratio DC output or determination output is output from the
jitter ratio DC output terminal (JITTER DC OUT) on the rear panel.
• Jitt (Jitter Ratio DC Output)
The jitter ratio of the selected measurement function can be converted to DC voltage
(0 to 5 V) and output from the jitter DC output terminal on the rear panel. You can
specify the jitter ratio that will output 5 V (upper limit) and the jitter ratio that will output
0 V (lower limit), and output DC voltage that is proportional to the jitter ratio. However,
if more than 5 V is calculated, 5 V is output. For the setting range of the upper and
lower limit, see "Upper and Lower Limit of the Jitter Ratio DC Output Range" below.
When the upper limit is set to 25% and the lower limit to 5%
5.0
Output
voltage
(VDC)
0.0
5
Jitter ratio (%)
For information on the update interval of the jitter ratio DC output, see the Note in
section 4.5.
• JudGE (Determination Output)
You can judge the measured jitter ratio against a specified value (determination level).
If the jitter ratio is less than or equal to the determination level, a DC voltage of 5 VDC
is output from the jitter DC output terminal, and 0 VDC is output if the jitter ratio
exceeds the determination level. For setting the determination level, see section 5.3.
When the determination level is set to 5%
Determination
level
5%
5.0
Output
voltage
(VDC)
0.0
Upper and Lower Limit of the Jitter Ratio DC Output Range
You can set the upper and lower limit of the jitter ratio DC output range in the following
range. The upper and lower limits correspond to 5 VDC and 0 VDC, respectively.
Setting range: 0.00 to 100.00% (in steps of 0.01%)
The minimum difference (jitter ratio) between the upper and lower limit is 1 ns. If the
lower limit is set equal to or higher than the upper limit (or vice versa), the upper limit is
automatically raised to 0.01% above the lower limit (or vice versa).
25
Changes in the jitter ratio
Time
IM 704610-01E