Series Digital Storage Oscilloscopes GDS-1202B

200/100/70MHz bandwidth selections, 2ch input
100/70/50MHz bandwidth selections, 4ch input
1GSa/s maximum sampling rate
10M maximum memory depth for each channel
7” 800 x 480 WVGA LCD display
256 color gradient display function to strengthen waveform performance
I2C/SPI/UART/CAN/LIN serial bus trigger and decoding functions
1Mpts FFT frequency domain signal display
Zero Key function for horizontal time, vertical voltage and triggering
Compact and innovative exterior design

The GDS-1000B Series features four bandwidth selections – 200MHz, 100 MHz, 70 MHz, 50MHz and equips with analog signal input terminals by four or two channels. The maximum sampling rate for each single channel is 1GSa/s, and the memory depth is 10Mpts per channel independently. The GDS-1000B Series has a waveform update rate of 50,000wfms/s, which helps users to precisely observe the detailed waveform variation. Additionally, 7” WVGA color LCD display and the 256 color gradient display function together allow waveforms to be observed with the senses of transparency and gradation.

With respect to the horizontal time scale adjustment knob and trigger level adjustment knob, GW Instek provides a very thoughtful design -the zero key function, which allows engineers to work more effectively. For mathematical analysis mode, 1Mpts FFT signal display makes the dull frequency domain signal analysis more delicate.

Moreover, the innovative exterior design and compact design also bring much convenience to users.

Other diversified and charming multi-functional operation demonstrates the concept of complete technology integration.

General Models

GDS-1102B
- Channels: 2 + EXT
- Bandwidth: DC to 100 MHz (−3 dB)
- Rise Time: 3.5 ns
- Bandwidth Limit: 20 MHz
GDS-1104B
- Channels: 4
- Bandwidth: DC to 100 MHz (−3 dB)
- Rise Time: 3.5 ns
- Bandwidth Limit: 20 MHz
GDS-1202B
- Channels: 2 + EXT
- Bandwidth: DC to 200 MHz (−3 dB)
- Rise Time: 1.75 ns
- Bandwidth Limit: 20 MHz

Vertical System

Vertical Resolution: 8-bit
Vertical Sensitivity: 1 mV/div to 10 V/div
Input Coupling: AC, DC, GND
Input Impedance: 1 MΩ // 16 pF (approx.)
DC Gain Accuracy: ±3%
Input Polarity: Normal / Invert
Maximum Input Voltage:
- 300 Vrms (CAT I)
- 300 Vrms (CAT II with GTP-070B-4 / 100B-4 10:1 probe)
Offset Position Range:
- ±1.25 V @ 1 mV/div
- ±2.5 V @ 2 mV/div to 100 mV/div
- ±125 V @ 200 mV/div to 10 V/div

Waveform Signal Processing

Math Functions: Addition, Subtraction, Multiplication, Division, FFT, FFTrms, and User-Defined Expressions
FFT Configuration:
- Vertical Scale: Linear RMS or dBV RMS
- Window Options: Rectangular, Hamming, Hanning, Blackman-Harris

Trigger System

Trigger Sources: CH1, CH2, CH3*, CH4*, EXT**, Line (*4-channel models only; **2-channel models only)
Trigger Modes: Auto (includes Roll mode for ≥100 ms/div), Normal, Single Sequence
Trigger Types:
- Edge, Pulse Width, Video, Pulse Runt, Rise & Fall
- Timeout, Alternate, Event Delay (1 to 65,535 events), Time Delay (4 ns to 10 s)
Holdoff Range: 4 ns to 10 s
Trigger Coupling: AC, DC, Low-Frequency Reject, High-Frequency Reject, Noise Reject
Trigger Sensitivity: 1 division

External Trigger (2-Channel Models Only)

Input Range: ±2.5 V
Sensitivity:
- DC to 100 MHz: ~100 mV
- 100 MHz to 200 MHz: ~150 mV
Input Impedance: 1 MΩ ±3% // 16 pF (approx.)

Horizontal System

Time Base Range: 5 ns/div to 100 s/div (1-2-5 increments)
ROLL Mode: 100 ms/div to 100 s/div
Pre-Trigger: Up to 10 divisions
Post-Trigger: Up to 2,000,000 divisions
Time Base Accuracy: ±50 ppm (≥1 ms interval)

Acquisition System

Real-Time Sample Rate: Max. 1 GSa/s
Record Length: Max. 10 Mpts
Acquisition Modes: Normal, Average, Peak Detect, Single
Peak Detection: 2 ns (typical)
Averaging: Selectable from 2 to 256 samples

X-Y Mode

X-Axis Input: Channel 1 (Channel 3 for 4-channel models)
Y-Axis Input: Channel 2 (Channel 4 for 4-channel models)
Phase Shift: ±3° at 100 kHz

Cursors and Automatic Measurements

Cursor Types: Amplitude, Time, Gating
Cursor Units: Seconds (s), Frequency (Hz), Phase (°), Ratio (%)
Cursor Measurements: ΔV (voltage difference), ΔT (time difference)

Automatic Measurements (36 Types):

Basic: Pk-Pk, Max, Min, Amplitude, High, Low, Mean, Cycle Mean, RMS, Cycle RMS
Area: Area, Cycle Area
Overshoot: ROVShoot, FOVShoot, RPREShoot, FPREShoot
Timing: Frequency, Period, Rise Time, Fall Time, +Width, −Width, Duty Cycle
Counting: +Pulses, −Pulses, +Edges, −Edges
Jitter Analysis: FRR, FRF, FFR, FFF, LRR, LRF, LFR, LFF
Phase Measurement
Auto Counter: 6 digits (2 Hz to rated bandwidth)

Control Panel Features

Autoset Function: Single-button auto setup with undo (configures vertical, horizontal, and trigger settings)
Save Setup Memory: Up to 20 sets
Save Waveform Memory: Up to 24 sets

Display

Display Type: 7-inch TFT LCD (WVGA)
Resolution: 800 × 480 pixels
Interpolation: Sin(x)/x
Display Options: Dots, Vectors, Variable Persistence (16 ms – 4 s), Infinite Persistence
Update Rate: Max. 50,000 waveforms per second
Graticule: 8 × 10 divisions
Display Modes: YT, XY

Interface and Connectivity

USB Ports:
- USB 2.0 Host ×1
- USB 2.0 Device ×1
Ethernet (LAN):
- RJ-45 (10/100 Mbps with HP Auto-MDIX)
- Available only on models GDS-1054B, GDS-1074B, GDS-1104B
Go-NoGo Output: BNC, 5 V Max / 10 mA TTL open collector
Security: Kensington-style lock slot