Chapter 5 Displaying Measured Results; Meter Display - YOKOGAWA TA220 User Manual

Chapter 5 Displaying Measured Results
5.1

Meter Display

Procedure
Displaying the Time Range
If you press the SCALE key and select s, the units of jitter displayed on the meter are set to units
of time (ns or µs). In this case, the specified time range (SEC RANGE) is displayed here.
KEY
LOCK SEC RANGE
Explanation
IM 704610-01E
Display 2 Display 1
ns ms s % V
%/
S
Displaying the Jitter Ratio and Selecting the Scale
Press SCALE to select 10% or 20%. The needle moves according to the
selected scale. The jitter ratio can be read on the upper scale of the meter (%).
Displaying the Jitter and Selecting the Time Range
1. Press SCALE to select s.
2. Press SHIFT+SCALE (SEC RANGE). The currently set time range is displayed
in the SEC RANGE area of Display 2.
3. Turn the rotary knob to select the time range. The selected time range is
applied to the lower scale (s) on the meter, and the needle moves according to
the new range. The jitter can be read on the lower scale of the meter (s).
The TA220 continuously takes measurements when the power is turned ON. The meter
needle indicates the jitter ratio or jitter of the measurement function that was selected in
section 4.1.
Jitter Ratio Scale
You can select the 10% or 20% scale for the jitter ratio on the upper scale of the meter.
• 10%
The scale line is written every 0.2%. The needle is capable of indicating a jitter ratio of
up to 11%.
• 20%
The scale line is written every 0.5%. The needle is capable of indicating a jitter ratio of
up to 22%.
Jitter Scale
The lower scale on the meter (s) is used as the jitter scale.
Time Range
When the scale units for the meter are set to s, you can select a time range from the
following.
0.5 n, 1.0 n, 5.0 n, 10 n, 50 n, 0.1 µ, 0.5 µ, 1.0 µ, 5.0 µ
<<For a functional description, see section 2.5>>
L.MARK R.MARK
DISP OFF
MEASURE
E2T
JUDGE
PW
GO
BD x1 D to C
NO-GO GATE TIME DELAY BLOCK
MEDIA FUNCTION ARMING INHIBIT
SHIFT SHIFT REMOTE STORE UTILITY
10%
LOCAL RECALL ENTER
20%
JDG LEVEL LEVEL COUPLE EQ BOOST
S
POLARITY TRIG IMPEDANCE EQUALIZER
AUTO MAN 50 Ω 1M Ω CONV
SEC RANGE
SCALE
The phrase, "rotary knob & <>"
is used in the following
explanation to instruct the user
to enter numerical setting values
using the knob and arrow keys.
For details on this procedure,
see section 3.7.
5-1
5