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New Economical 4-channel Oscilloscopes GBS-1074, GBS-1104, GBS-1204

The GBS‐1000 series, an economical selection of the four‐channel DSO, offers three frequency ranges including 200,100, and 70MHz, real time sampling rate of 1 GSa/s, equivalent time sampling rate of 25GSa/s and 25k points memory depth.

The GBS‐1000 series has numerous features including 5.7” TFT color LCD display, 27 automatic measurements, FFT and FFTrms tests, 12‐graticule horizontal display, Go/NoGo for predefined conditions, and flexible interface selections such as USB and RS 232. By using the USB interface, users can save waveform images and waveform data as well as carry out waveform printout. The diversified features have made the
GBS‐1000 series the valuable choice of the economical four‐channel oscilloscope.


Signal Acquisition

The GBS‐1000 series features real time sampling rate of 1GSa/s and equivalent time sampling rate of 25GSa/s. The three built‐in signal acquisition methods are normal, peak detect and average. The flexible trigger type selections comprise edge, video (NTSC, PAL, SECAM) and pulse width. The trigger modes of edge and pulse include auto, normal and single.

25k Points Waveform Memory Depth

Oscilloscopes with long memory facilitate users to retrieve more waveform data in a certain period of time. The GBS‐1000 series, with 25k points memory depth, allows users to meticulously observe signals. Users, via the Acquire function of the GBS‐1000 series, can select 25k or 500 points memory depth to analyze complex waveforms or acquire fast updated waveforms.

Measurement Functions

The GBS‐1000 series provides 27 automatic measurement selections including voltage, period and time delay. Each channel can execute 5 measurement items simultaneously. 10 measurement results of two channels combined can be shown on the screen at the same time. All measurement results displaying on the screen allow users to efficiently observe all measurement parameters so as to better interpret
signals. Once the cursor function is on, the measurement target will be the signal within the cursor. After pressing Menu Off key, the measurement information will still be shown on the screen.

Complete vertical and horizontal expansion function

Users, via the GBS‐1000 series, can either select GND or the center of the signal to execute vertical expansion. Either the center of the signal or the vertical trigger point can be selected to carry out horizontal expansion. A sound signal expansion selection facilitates users to expand required signals for a detailed observation of signal trigger points.

Data Log

The data log function allows users to continuously record waveform data in a USB flash drive. After presetting time, interval and format for data recording the data log function will automatically record signals, which met trigger conditions. This function facilitates waveform recording for a long period of time that is beneficial to the observation and measurement result analysis afterwards.

Go/NoGo Test

The Go/NoGo function verifies whether or not the input signals are consistent with users’ preset conditions. Users have to preset waveform reference and signal conditions to activate Go/NoGo function and the Go or NoGo result will be shown on the screen instantly. Once the result is NoGo the GBS‐1000 will be sounding a buzz or sending out a control signal through the BNC output interface on the rear panel.

FAB Analyses

  Features Advantages Customer Benefits
1 25K Points Record Length Longer memory depth produces signals in great detail. With the same timeframe, users can acquire complete waveforms to ensure the integrity of signal tests.
2 Auto measurements 27 diversified measurement selections facilitate users to obtain
results easily. After activating the cursors function, users can freely
select the desired signal measurement range.
Diversified measurement selections produce measurement result in no time that greatly enhances test efficiency.
3 Complete vertical and horizontal expansion function Users, based upon the requirements, can select GND or the center of the signal to vertically expand signals. The center of the signal or trigger point can be selected for horizontal expansion. Users, by requirements, can precisely observe signals of any segment in detail to expedite signal analysis process via selecting either vertical or horizontal expansion.
4 Data Log For analyzing waveforms and data afterwards, the data log function
allows users to select required data recording time and interval, either waveform recording or data recording, or both.
Either long waveform image recording or long data recording, or both facilitate observation and measurement result analysis afterwards.


GBS‐1000 Features and Functions

Key Performance Specifications

  • 200MHz/100MHz/70MHz Bandwidth Range
  • 1GSa/s Real‐time Sampling Rate and 25k Points Memory Depth
  • 25GSa/s Equivalent Time Sampling Rate
  • 2mV /div to 5V/div of Vertical Range
  • 1ns/div to 10s/div of Time Base Range
  • 5.7 inch TFT LCD Display
  • Data Log

Rich Features for Signal Analysis and System Debug

  • Abundant Trigger Functions to Capture Demanded Signals
  • 27 Automatic Measurement Functions offer Direct Measurement Readings
  • FFT and FFTrms Computing Provides the Frequency Domain Analysis

Communication Interfaces and I/O

  • Go/NoGo output
  • USB host/device port
  • RS232

Service Policy

  1. 3‐year warranty. The GBS‐1000 series oscilloscope with SMD design is a highly reliable product that carries a 3‐year warranty.
  2. Service Support. The service instructions in the Service Manual will help distributors repair
    defective units promptly. Should the board replacement is necessary to fix the defective unit, the
    board swapping service support is provided by Good Will Instrument to facilitate the repair jobs
    done at the distributor’s site.
  3. Firmware upgrade through Website. Good Will Instrument continues to provide the after sales
    support through its website. The most updated version of firmware and PC software of GBS‐1000
    series will be posted on Good Will Instrument Website at for free
    download via USB Flash Drive.


  GBS‐1074 GBS‐1104 GBS‐1204
Channels 4 4 4
Bandwith DC ~ 70MHz (‐3dB) DC ~ 100MHz (‐3dB) DC ~ 200MHz (‐3dB)
Rise Time 5 ns Approx. 3.5ns Approx. 1.75ns Approx.
Sensitivity 2mV/div ~ 5V/div (1‐2‐5 increments)
Accuracy ±(3% x |Readout|+0.05 div x Volts/div+0.8mV)
Input Coupling AC, DC & Ground
Input Impedance 1MΩ±2%, ~16pF
Polarity Normal & Invert
Maximum Input 300V (DC+AC peak), CATII
Waveform Signal Process + , ‐ , X ,FFT ,FFTrms
Offset Range 2mV/div ~ 20mV/div : ±0.5V 50mV/div ~ 200mV/div : ±5V 500mV/div ~ 2V/div : ±50V 5V/div : ±300V
Bandwidth Limit 20MHz (‐3dB)
Sources CH1 , CH2 , CH3 , CH4 , Line
Types Edge ,Video ,Pulse
Modes Auto‐Level ,Auto, Normal, Single
Video trigger standard SECAM ,PAL ,NTSC
Coupling AC , DC , LF rej. , HF rej. , Noise rej.
Sensitivity DC ~ 25MHz : Approx. 0.5div or 5mV 25MHz ~70/100/ 200MHz : Approx. 1div or 10mV
Range 1ns/div ~ 10s/div (1‐2‐5 increments) ROLL : 250ms/div ~ 10s/div
Modes Main, Window, Window Zoom, Roll, Scan, X‐Y
Accuracy ±0.01%
Pre-Trigger 20 div maximum
Post-Trigger 1000 div
X-Y Mode
X‐Axis Input Channel 1
Y‐Axis Input Channel 2 or Channel 3 or Channel 4
Phase Shift ±3° at 100kHz
Signal Acquisition
Real‐Time Sample Rate 1GSa/s maximum
Equivalent Sample Rate 25GSa/s maximum
Vertical Resolution 8 Bits
Record Length 25K Points maximum
Acquisition Mode Normal, Peak Detect, Average
Peak Detection 10ns
Average 2 , 4 , 8 , 16 , 32 , 64 , 128 , 256
Cursors and Measurement
Voltage Measurement Vpp , Vamp , Vavg , Vrms , Vhi , Vlo , Vmax , Vmin , Rise Preshoot/Overshoot , Fall Preshoot/Overshoot
Time Measurement Freq , Period , Rise Time , Fall Time , Positive Width , Negative Width , Duty Cycle
Delay Measurement Eight types of delay measurement
Cursors Measurement Voltage difference between cursors (ΔV) Time difference between cursors (ΔT)
Auto Counter Resolution : 6 digits Accuracy : ±2% Signal Source: All available trigger source except the Video trigger mode
Control Panel Function
Autoset Automatically adjusts Vertical VOLTS/DIV, Horizontal TIME/DIV, and Trigger level
Save Setup Up to 20 sets of measurement conditions
Save Waveform 24 sets of waveform
TFT LCD Type 5.7 inch
Display Resolution 234 (Vertically) x 320 (Horizontally) Dots
Display Graticule 8 x 10 divisions ; 8 x 12 divisions (menu off)
Display Brightness Adjustable
Go/NoGo Output 5V Maximum/10mA TTL Open Collector Output
RS‐232 Interface DB 9‐pin male DTE RS‐232 interface
GPIB Interface (Option) Fully programmable with IEEE 488.2 compliance
USB USB Host/Device 2.0 full speed supported
Power Source
Line Voltage Range AC 100V ~ 240V , 48Hz ~ 63Hz , Auto selection
Multi‐Language Menu Available
Online Help Available
Data Log Available
Time Clock Time and Date, Provide the Date/Time for saved data
Dimensions & Weight
310(W) x 142(H) X 254(D)mm; Approx. 4.3kg

Ordering Information

  • GBS‐1074 70MHz, 4‐channel DSO
  • GBS‐1104 100MHz, 4‐channel DSO
  • GBS‐1204 200MHz, 4‐channel DSO

Includes Accessories:

  •  Quick Start Guide x1 , User Manual CD X1 , Power CordX1
  • GTP‐070A‐4 : 70MHz (10:1/1:1) Switchable passive probe for GBS‐1074(one per channel)
  • GTP‐100A‐4 :100MHz (10:1/1:1) Switchable passive probe for GBS‐1104(one per channel)
  • GTP‐250A‐2 :250MHz (10:1/1:1) Switchable passive probe for GBS‐1204 (one per channel)

Free Download

  • Driver: USB driver, LabView Driver