4-3
IM 704420-01E
Setting Measurement Conditions
4
• Selecting the slope of the clock signal
There are two clock signals: the clock signal that is applied to the clock input
connector and the clock signal that is regenerated by the PLL circuit. This setting
is valid for the clock signal that is applied to the clock input connector. When using
the clock signal that is regenerated by the PLL circuit, this setting is made invalid,
and the rising slope is always used. For the procedure when using the
regenerated clock signal, see section 4.7.
•
: Measures the time difference between the measurement starting point of
the time difference and the first rising slope of the clock signal.
•
: Measures the time difference between the measurement starting point of
the time difference and the first falling slope of the clock signal.
Selecting BI-PHASE jitter
For an explanation of BI-PHASE jitter, see the TA120E Digital Jitter Meter Option
Function User’s Manual (IM704420-51E).
Note
•
If you select [
×
N] with the FUNC key and set the
×
N speed setting to 6.2, you can measure
the pulse width of a single-speed [
×
1] DVD using the 3T jitter measurement function.
•
The TA120E retains setup information of the measurement conditions for each measurement
function (
×
1,
×
N, DtoC). However, the setup items that are common on the TA120E such as
the ON/OFF condition of the numeric display (see section 5.2), the ON/OFF condition of key
lock (see section 7.6), and GP-IB address (see section 8.4) are the same.
•
The frequency range of the input clock signal that can be measured is from 25 MHz to 60
MHz.
4.1 Setting the Measurement Function
