10-2
IM 704420-01E
10.2 Measurement Function
Item
Specification
Measurement update rate
*1
50 ms minimum (when measuring a 8-16 modulated signal with the measurement function set
to D-to-C jitter, slope of the data signal set to both rising and falling, and the gate type set to
event gate (number of acquisitions of measured values fixed to 10
5
))
D-to-C jitter (time difference between the data signal and clock signal of a DVD)
Measurement range: –5 ns to T + 5 ns, where T is the period of the measured clock signal
Statistics display: Select from jitter ratio, jitter, and average value
3T jitter (pulse width of the 3T data signal of a CD)
Speed: Select from
×
1 and
×
N.
Manual setting of speed (only when set to
×
N) is possible.
•
Range: 1.0 to 10.0
•
Resolution: 0.1
Measurement range: 2.5T to 3.5T (where T = 231.385 ns/N and N is the speed)
Statistics display: Select from jitter ratio, jitter, and average value
Average value*1
Accuracy:
±
(300 psrms + trigger level timing error + (time base frequency stability x measured
value) + 1 ns systematic error) (when the measurement function is set to 3T)
*1 Measured value under standard operating conditions as described in General Specifications after the warm-up time has
elapsed.
10.3 Gate, Arming, and Inhibit
Item
Specification
Gate
Gate type
Select event gate (number of acquisitions of measured values fixed to 10
5
) or time gate (0.1 s,
0.5 s, or manual).
Gate time (only for manual setting)
Range: 1.0 ms to 1000.0 ms
Resolution: 0.1 ms
Arming
Arming source
Internal arming
The internal signal of the TA120E becomes the arming source.
External arming
The external signal applied to the external arming input connector (EXT ARM IN) becomes the arming source. For the
specifications of the input connector, see section 10.6.
Arming slope (only during external arming)
Select
or
.
Arming delay (only during external arming)
Range: 0.0 ms to 1000.0 ms
Resolution: 0.1 ms
Inhibit
The external signal applied to the inhibit input connector (INHIBIT IN) becomes the inhibit
signal. For the specifications of the input connector, see section 10.6.
Polarity: Select
or
.
