YOKOGAWA DL7440

17-2 IM 701450-01E
17.2 Logic Input Section (Optional)
Item Specifications
Probes that can be used 701980
1
/701981 (8-bit input)
Maximum toggle frequency
2
When using the 701980: 100 MHz, when using the 701981: 250 MHz
Number of inputs 16 (when two logic probes are used)
Maximum input voltage ±40 V (DC+ACpeak) or 28 Vrms when the frequency is 1 kHz or less.
Input range ±10 V
Maximum sample rate When interleave mode is ON: 2 GS/s
When interleave mode is OFF: 1 GS/s
Threshold level When using the 701980: ±40 V (resolution: 0.1 V)
When using the 701981: ±10 V (resolution: 0.1 V)
Threshold accuracy
2
±(0.1 V + 3% of the setting)
Minimum input voltage
2
500 mV
p-p
Input impedance When using the 701980: Approx 1 MΩ/approx. 10 pF
When using the 701981: Approx. 10 kΩ, approx. 9 pF
Preset threshold levels CMOS (5 V): 2.5 V, CMOS (3.3 V): 1.6 V, and ECL: –1.3 V
1 The 701980 can be used only when the firmware version of the DL7400 is 1.30 or later.
2 Under standard operating conditions (see section 17.12) after the warm-up.
17.3 Trigger Section
Item Specifications
Trigger mode Auto, auto-level, normal, single, and single(N)
Trigger source CH1 to CH8/4
1
(signal input from each input terminal), LINE (commercial power supply
signal that is connected),
EXT (signal input from the EXT TRIG IN terminal)
Trigger coupling CH1 to CH8/4
1
: DC/AC
EXT: DC
HF rejection Select the bandwidth limit with respect to the trigger source (OFF, DC to approx. 15 kHz, or
DC to approx. 20 MHz) for each channel (CH1 to CH8/4
1
)
Trigger hysteresis Select high or low for the trigger level hysteresis width for each channel (CH1 to CH8/4
1
)
Trigger level range CH1 to CH8/4
1
: ±4 divisions from the screen center (resolution of 0.01 divisions)
EXT: ±2 V (resolution is 5 mV)
Trigger level accuracy CH1 to CH8/4
1, 2
: ±(1 division + 10% of the trigger level)
EXT
3
: ±(50 mV + 10% of the trigger level)
Probe attenuation setting for 1:1 or 10:1
external trigger
Trigger sensitivity
3
CH1 to CH8/4
1
:1 div
P-P
at DC to 500 MHz
EXT: 100 mV
P-P
at DC to 100 MHz
Trigger position Can be set in 1% increments of the display record length.
Trigger delay range 0 to 4 s
Hold off time range 80 ns to 10 s
Trigger slope Rising, falling, rising and falling (for edge trigger)