YOKOGAWA WT500, Руководство пользователя

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14-15
IM 760201-01E
Specifications
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App
Index
14.7 External Input and Output (Master and slave
synchronization signals and clock input)
Item Specifications
Connector BNC connector. Same for both master and slave.
I/O level TTL. Same for both master and slave.
Output logic
Negative logic, falling edge. Applies to the master.
Measurement start delay time Within (3 µ
s + 1 sample interval). Applies to the master.
Output hold time Low level, 500 ns or more. Applies to the master.
Input logic
Negative logic, falling edge. Applies to the slave.
Minimum pulse width Low level, 500 ns or more. Applies to the slave.
Input delay time
Within (1
µ
s + 3 sample intervals) when the display is held. Applies to the slave.
Within (70
µ
s + 3 sample intervals) when the display is not held. Applies to the slave.
When Used as a Synchronization Source (Ext Clk) during Normal Measurement
Item Specifications
Frequency range Same as the frequency range listed in section 14.6, “Frequency Measurement.”
Input waveform 50% duty ratio rectangular wave
When Used as a PLL Source (Ext Clk) during Harmonic Measurement (Optional)
Item Specifications
Frequency range 10 Hz to 1.2 kHz
Input waveform 50% duty ratio rectangular wave
When Used as a Trigger
Item Specifications
Minimum pulse width
1
µ
s
Trigger delay time Within (1 µ s + 3 sample intervals)
14.8 RGB Video Signal (VGA) Output (Optional)
Item Specifications
Connector D-sub 15 pin (receptacle)
Output type VGA compatible