17-1
IM 701730-01E
Specifications
17
17.1 Input Section
Item
Description
Number of input channels
4(CH1-CH4), DL1720E is 2 (CH1, CH2)
Input coupling
AC 1M
Ω
, DC 1M
Ω
, DC 50
Ω
, GND
Input connector
BNC connector
Input impedance
1 M
Ω
±
1.0%, approx. 20 pF
50
Ω
±
1.0% (VSWR1.4 or less (DC-500 MHz, DL1735E is DC-350 MHz))
Voltage-axis sensitivity setting For 1 M
Ω
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 M
Ω
input (at a frequency of 1 kHz or less): 400 V (DC+ACpeak) (282 Vrms CAT II)
For 50
Ω
input:
5 Vrms or 10 Vpeak (not to exceed either of
the two values)
Maximum DC offset setting range (When the probe attenuation is set to 1:1)
2 mV/div to 50 mV/div:
±
1 V
100 mV/div-500 mV/div:
±
10 V
1 V/div-10 V/div:
±
100 V
Vertical (voltage) axis accuracy
DC accuracy
2
:
±
(1.5% of 8 div + offset voltage axis accuracy)
Offset voltage axis
2 mV/div to 50 mV/div:
±
(1% of the s 0.2 mV)
accuracy
2
100 mV/div-500 mV/div:
±
(1% of the s 2 mV)
1 V/div-10 V/div:
±
(1% of the s 20 mV)
Frequency characteristics
2, 3
(–3 dB point when a sine wave of amplitude
±
4 divisions is input)
DL1720E/DL1740E/DL1740EL
For 50
Ω
input
1 V/div-10 mV/div:
DC-500 MHz
5 mV/div-2 mV/div:
DC-400 MHz
For 1 M
Ω
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-10 mV/div:
DC-400 MHz [DC-500 MHz]
5 mV/div-2 mV/div:
DC-300 MHz [DC-400 MHz]
DL1735E
For 50
Ω
input
1 V/div-10 mV/div:
DC-350 MHz
5 mV/div-2 mV/div:
DC-250 MHz
For 1 M
Ω
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-10 mV/div:
DC-350 MHz [DC-350 MHz]
5 mV/div-2 mV/div:
DC-250 MHz [DC-250 MHz]
Lower –3 dB attenuation point when AC coupled
10 Hz or less (1 Hz or less when using the 10:1 probe provided)
Skew between channels (When using the same settings)
1 ns or less
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 bit (24 LSB/div)
Probe attenuation setting
1:1, 10:1, 100:1, 1000:1, 10A:1 V, 100A:1 V
1. When using the probe, be sure that the maximum input voltage of the DL1700E and the maximum input voltage of the probe
are not exceeded.
2. Value measured under standard operating conditions (see section 17.12) after thirty-minute 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.
Chapter 17
Specifications