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GDS-820/840 Series Digital Storage Oscilloscope

GDS-820/840 Series  Datasheet

FEATURES
150MHz/250MHz Bandwidth with either Color or Monochrome LCD Display
125k Long Memory and 12 Division Horizontal Display
25Gsa/s Sampling Rate for Repetitive Waveforms 
15 Auto Measurement Functions to get quick and accurate results
Advance Trigger: Pulse Width, TV-Line, Event Delay and Time Delay
GO-No Go, Learn Mode and Auto Setup Sequence
FFT Function
Standard Interface: USB, RS232, Printer Port, Option: GPIB Interface

                        

 
      SPECIFICATIONS

   
      Display System

 

      Display Device

GDS-820

GDS-820S

GDS-820C

GDS-840S

GDS-840C

Mono (320*240)
5.7" LCD
Mono (320*240)
5.7" LCD
Color (320*240)
5.7" LCD
Mono (320*240)
5.7" LCD
Color
(320*240)
5.7" LCD
      Display Contrast
Adjustable
      Waveform Display Graticule
8 x 10 divisions (8 x 12 div, when menu off)
      Display Mode
Dot, Vector, Accumulate

      Vertical System

 
      Bandwidth (-3dB)

GDS-820

GDS-820S

GDS-820C

GDS-840S

GDS-840C

DC~150MHz
DC~150MHz
DC~150MHz
DC~250MHz
DC~250MHz
      Channels
2
      Resolution
8 bit
      Sensitivity
2mV / DIV ~ 5V / DIV
      Accuracy
+3%
      Rise Time

GDS-820

GDS-820S

GDS-820C

GDS-840S

GDS-840C

<2.3ns
<2.3ns
<2.3ns
<1.4ns
<1.4ns
      Input Coupling
AC, DC, GND
      Input Impedance
1MΩ + 2%, ~ 22pF
      Polarity
Positive& Negative
      Maximum Voltage Between   
      Signal and Common at input
      BNC
300V (DC + AC peak), CAT II
      Waveform Signal Process
CH1-CH2, CH1+CH2, FFT
      Offset Range
2mV/div ~ 50mV/div: +0.5V ; 100mV/div ~ 500mV/div: +5V ; 1V/div ~ 5V/div: +50V
      Bandwidth Limit
20MHz (-3dB)

      Horizontal System

 
      Range
1nS/DIV ~10S / DIV ; Roll: 250mS/DIV ~ 10S/DIV (1-2-5 increments)
      Modes
MAIN, WINDOW, WINDOW ZOOM, ROLL, X-Y
      Accuracy
+0.01%
      Delay Range
Pre-trigger : 20 DIV, Post-trigger : 1000 DIV

      Signal Acquisition System

      Real-time Sample Rate
100MSa/s maximum on each channel
      Equivalent Sample Rate
25GSa/s maximum on each channel
      Record Length
125k / CH
      Peak Detection
10nS (500nS/DIV ~ 10S/DIV)
      Acquisition Mode
Sample, Peak Detect, Average
      Average
2, 4, 8, 16, 32, 64, 128, 256

      Trigger System

 
      Source
CH1, CH2, LINE, EXT
      Modes
AUTO-LEVEL, AUTO, NORMAL, SINGLE, TV, TIME DELAY, /EVENT DELAY, EDGE, PULSE WIDTH
      Coupling
AC, DC, LF rej, HF rej, Noise rej
      Sensitivity

GDS-820

GDS-820S

GDS-820C

GDS-840S

GDS-840C

DC ~ 25MHz : approx. 0.35 DIV or 3.5mV ;
25MHz ~ 100MHz : approx. 1.5 DIV or 15mV
DC ~ 25MHz : approx. 0.35 DIV or 3.5mV ;
25MHz ~ 250MHz : approx. 1.5 DIV or 10mV

      External Trigger

 
      Range
+15V
      Sensitivity

GDS-820

GDS-820S

GDS-820C

GDS-840S

GDS-840C

DC ~ 30MHz : approx. 50mV ;
30MHz ~ 100MHz : approx. 100mV
DC ~ 30MHz : approx. 50mV ;
30MHz ~ 100MHz : approx. 100mV;

150MHz 100MHz ~ 250MHz : approx. 150mV
      Input Impedance

1MΩ + 2%, ~ 22pF

      Maximum Input

300V (DC + AC peak), CAT II


      X-Y Mode

 
      X-Axis Input / Y-Axis Input

Channel 1 (CH1) / Channel 2 (CH2)

      Phase Shift

+3 deg at 100kHz


      Cursor & Measurement

 
      Automated Voltage  
      Measurement
Vhi, Vlo, Vmax, Vmin, Vpp, Vavg, Vrms, Vamp
      Automated Time
      Measurement
Rise Time, Fall Time, Duty Cycle, Frequency, Period, Positive Width, Negative Width
      Cursor Measurement
Voltage difference between cursors (ΔV)
time difference between cursors (ΔT)
Frequency difference between cursors (1/ΔT)

      Frequency Counter

 
      Readout Resolution
6 digits
      Range
AC Coupled, 10Hz minimum to rated bandwidth
      Signal Source
All available trigger source except the Pulse Width & Video Trigger mode

      Control Panel Functions  
      Autoset
"Autoset" adjust vertical (volt/DIV), horizontal (sec/DIV), and trigger level automatically
      Save/Recall
Up to 15 sets of measurement conditions can be saved and recalled
      Waveform Trace Save/Recall
2 sets of waveform can be saved and recalled

     Interface    
      USB Interface

GDS-820

GDS-820S

GDS-820C

GDS-840S

GDS-840C

NA
STD.
STD.
STD.
STD.
      RS-232 Interface
NA
STD.
STD.
STD.
STD.
      Printer port
NA
STD.
STD.
STD.
STD.
      Go-No Go Output
NA
STD.
STD.
STD.
STD.
      GPIB Interface
NA
OPT.
OPT.
OPT.
OPT.

      Power Source    
      Line Voltage Range
100V ~ 240V AC, automatic selection
      Line Frequency
48Hz ~ 63Hz
      Power Consumption
85Watts, 95VA maximum, with fan

      Accessories
Power cord x 1 ;
Instruction manual x 1 ;
GDS-820 Series: GTP-150A Probes(10:1/1:1) x 2
GDS-840 Series: GTP-250A Probes(10:1/1:1) x 2

      Dimensions & Weight

254(W) x 142(H) x 310(D) mm, Approx. 4.1kg

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