YOKOGAWA DL7440 User Manual

17-1
IM 701450-01E
17
Specifications
17.1 Input Section
Item Specifications
Number of input channels DL7440 (4-channel model, models 7071450 and 701460): 4 (CH1 to CH4)
DL7480 (8-channel model, models 7071470 and 701480): 8 (CH1 to CH8)
Input coupling AC 1MΩ, DC 1MΩ, DC 50Ω, and GND
Input connector BNC connector
Input impedance 1 MΩ±1.0%, approx. 20 pF
50 Ω±1.0% (VSWR 1.4 or less (DC to 500 MHz))
Voltage-axis sensitivity setting For 1MΩ input: 2 mV/div to 10 V/div (1-2-5 steps)
For 50 Ω input: 2 mV/div to 1 V/div (1-2-5 steps)
Maximum input voltage
1
For 1 MΩ input (at a frequency of 1 kHz or less): 400 V (DC+ACpeak) (282 Vrms CAT II)
For 50 Ω input: 5 Vrms and 10 Vpeak (not to exceed either of the two values)
Maximum DC offset setting range 2 mV/div to 50 mV/div: ±1 V
(When the probe attenuation 100 mV/div to 500 mV/div: ±10 V
is set to 1:1) 1 V/div to 10 V/div: ±100 V
Vertical (voltage) axis accuracy
DC accuracy
2
: ±(1.5% of 8 div + offset voltage axis accuracy)
Offset voltage axis accuracy
2
2 mV/div to 50 mV/div: ±(1% of the setting + 0.2 mV)
100 mV/div to 500 mV/div: ±(1% of the setting + 2 mV)
1 V/div to 10 V/div: ±(1% of the setting + 20 mV)
Frequency characteristics
2, 3
For 50 Ω input
(–3 dB point when a sine wave of 1 V/div to 10 mV/div: DC to 500 MHz
amplitude ±4 divisions is input) 5 mV/div to 2 mV/div: DC to 400 MHz
For 1 MΩ input (when using the 700988 passive probe, indicates the frequency of the input
signal at the probe tip. The value inside the brackets is the frequency when using the
701941 miniature passive probe.)
10 V/div to 10 mV/div: DC to 400 MHz [DC to 500 MHz]
5 mV/div to 2 mV/div: DC to 300 MHz [DC to 400 MHz]
Lower –3 dB point when AC 10 Hz or less (1 Hz or less when using the 10:1 probe provided)
coupled
Skew between channels 1 ns or less
(When using the same settings)
Residual noise level
4
±1.25 mV or ±0.15 div, whichever is greater (typical value
5
)
Isolation between channels At 500 MHz: –34 dB (typical value
5
)
(Same voltage sensitivity)
A/D conversion resolution 8 bits (24 LSB/div)
Probe attenuation setting 1:1, 10:1, 100:1, 1000:1, 10A:1V
6
, and 100A:1V
6
Bandwidth limit Turn ON/OFF the 100-MHz or 20-MHz bandwidth limit for each channel.
Maximum sample rate Realtime sampling mode
When interleave mode is ON: 2 GS/s
When interleave mode is OFF: 1 GS/s
Repetitive sampling mode: 100 GS/s
Maximum record length 4 MW memory model (701450 and 701470)
When interleave mode is ON: 4 MW/CH
When interleave mode is OFF: 2 MW/CH
16 MW memory model (701460 and 701480)
When interleave mode is ON: 16 MW/CH
When interleave mode is OFF: 8 MW/CH
1 When using the probe, be sure that the maximum input voltage of the DL7400 and the maximum input voltage of the probe
are not exceeded.
2 Value measured under standard operating conditions (see section 17.12) after warm-up and after calibration with the time
base set to internal clock.
3 Value in the case of a repetitive phenomenon. The frequency bandwidth of a single-shot phenomenon is the smaller of the
two values, DC to sampling frequency/2.5 and the frequency bandwidth of a repetitive phenomenon.
4 When the input section is shorted, the record length set to 10 kW, the acquisition mode set to normal mode, the
accumulation set to OFF, and the probe attenuation set to 1:1.
5 Typical value represents a typical or average value. It is not strictly warranted.
6 Automatically set to the optimum values for the current probe (700937, 701930, 701931, 701932, or 701933 sold separately).
Chapter 17 Specifications

YOKOGAWA DL7440 Specifications

General

Brand	YOKOGAWA
Model	DL7440
Category	Test Equipment
Language	English