15-5
IM 704510-01E
Specifications
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15.3 Gate, Arming, and Inhibit
The specifications for inter-symbol interference analysis mode conform to the
specifications for time stamp mode.
Item
Specifications
Gate
• Gate types: Select from EVENT, TIME, and EXTERNAL
When using the dual measurement function
*2
, the measurement terminates when the gate of
each measurement closes.
• Selectable range of the event size when using event gate (within the longest sampling time)
• Time stamp mode or inter-symbol interference analysis mode
• Single measurement function
*3
: 2 to 1024000
• Dual measurement function
*2
:
1 to 51200 (for each measurement)
• Hardware histogram mode
• Single measurement function
*5
: 2 to 10
9
• Dual measurement function
*2
:
1 to 10
9
(for each measurement)
• Selectable range of gate time when set to time gate (within the maximum event size of each
sampling mode)
1
µ
s
≤
gate time
≤
10 s (resolution is 100 ns)
• Allowable time and polarity when set to external gate
Allowable time: 1
µ
s to 320 s (except within the maximum event size of the sampling mode)
Polarity: Select from
and
• External gate input (shared with external arming)
• Connector type: BNC
• Input coupling: DC
• input impedance: 1 M
Ω
(typical value
*1
)
• Trigger level: TTL (1.4 V), TTL/10 (0.14 V), or 0 V
• Maximum input voltage: 40 V (DC + AC
peak
)
• Minimum input pulse width: 30 ns
• Setup time: 60 ns (must precede the measurement signal by at least 60 ns for the gate to be valid).
Arming
• Arming source: Select from AUTO and EXT (external)
• External arming (EXT) setting
• Selectable range of delay time when set to time delay (set the time for each measurement
when using the dual measurement function
*2
)
1
µ
s
≤
delay time
≤
1 s (resolution is 100 ns)
• Selectable range of the event size when set to event delay (Set the value for each
measurement when using period A & period B or pulse width A & pulse width B measurement.
Event delay is possible when the frequency of event occurrence is less than or equal to 50 MHz.)
1 to 10
6
(resolution: 1)
• Slope: Select from
↑
and
↓
• External arming input (shared with external gate)
• Connector type: BNC
• Input coupling: DC
• input impedance: 1 M
Ω
(typical value
*1
)
• Trigger level: TTL (1.4 V), TTL/10 (0.14 V), or 0 V
• Maximum input voltage: 40 V (DC + AC
peak
)
• Minimum input pulse width: 30 ns
• Setup time: 60 ns (must precede the measurement signal by at least 60 ns for the arming to be valid).
Inhibit
• Active time
• When in time stamp mode: 1
µ
s to 320 s
• When in hardware histogram mode: 1
µ
s to 3200 s
• Polarity: Select from
and
• Inhibit input
• Connector type: BNC
• Input coupling: DC
• input impedance: 1 M
Ω
(typical value
*1
)
• Trigger level: TTL (1.4 V), TTL/10 (0.14 V), or 0 V
• Maximum input voltage: 40 V (DC + AC
peak
)
• Minimum input pulse width: 30 ns
• Setup time: 30 ns (must precede the measurement signal by at least 30 ns for the inhibit to be valid).
*1 Typical value represents a typical or average value. It is not strictly warranted.
*2 Period A & period B, period A & A-to-B time interval, pulse width A & A-to-B time interval, pulse width A & pulse width B,
pulse width A
→
A-to-B time interval, or pulse width A
→
pulse width B measurement.
*3 Period, A-to-B time interval, or pulse width measurement.
