The Tektronix TDS7404 is a high-performance 4 GHz, 4-channel Digital Phosphor Oscilloscope (DPO) designed for advanced digital design, jitter analysis, and serial data validation. It combines a real-time sample rate of 20 GS/s with up to 400,000 wfms/s capture rate, an open Microsoft Windows operating system, and TekConnect connectivity for high signal fidelity.
Specifications
Vertical System
| Parameter | Value |
|---|---|
| Input Channels | 4 |
| Analog Bandwidth (-3 dB) | 4 GHz |
| Calculated Rise Time (10% to 90%) | 100 ps |
| Calculated Rise Time (20% to 80%) | 70 ps |
| Input Coupling | DC, GND |
| Input Sensitivity Range | 2 mV/div to 1 V/div |
| Vertical Resolution | 8-bit (>11-bit with averaging) |
| Position Range | ±5 divisions |
Horizontal System
| Parameter | Value |
|---|---|
| Real-Time Sample Rate (1 Channel) | 20 GS/s |
| Real-Time Sample Rate (2 Channels) | 10 GS/s |
| Real-Time Sample Rate (3 or 4 Channels) | 5 GS/s |
| Maximum Record Length (with Option 4M) | 32 MS (1 Ch), 16 MS (2 Ch), 8 MS (4 Ch) |
Trigger System
| Parameter | Value |
|---|---|
| Trigger Modes | Auto, Normal, Single |
| Trigger Coupling | DC, AC, HF Rej, LF Rej, Noise Rej |
| Trigger Holdoff Range | 250 ns to 12 s |
| Edge Triggering | Positive or negative slope on any channel or front panel auxiliary input |
| Runt Triggering | Trigger on a pulse that crosses one threshold but fails to cross a second before crossing the first again |
| Timeout Triggering | 1 ns to 1 s |
| Pattern/State Triggering | Trigger when pattern goes false or true, or is qualified by a clock edge (up to 4 inputs) |
| Setup/Hold Triggering | Trigger on violations of both setup time and hold time between clock and data |
| Transition Triggering | 1 ns to 1 s |
| Window Triggering | Trigger on an event that enters or exits a window defined by two thresholds |
Acquisition Modes
| Parameter | Value |
|---|---|
| Sample Mode | Acquires and displays sampled values |
| Envelope Mode | Acquires and displays minimum and maximum values over multiple acquisitions |
| Average Mode | Averages waveform data from 2 to 10,000 acquisitions |
| Waveform Capture Rate | >400,000 wfms/s (FastAcq mode) |
| FastAcq Mode | Reduces oscilloscope dead-time to maximize probability of capturing rare events |
| FastFrame Segmented Memory | Acquires multiple frames into a single record |
| Waveform Database Mode | Accumulates a multi-dimensional database of amplitude, time, and hits |
Waveform Measurements and Analysis
| Parameter | Value |
|---|---|
| Automatic Measurements | 53 automatic measurements |
| Measurement Statistics | Mean, Minimum, Maximum, Standard Deviation, Population |
| Waveform Histograms | Vertical or horizontal histograms with statistics |
| Math Functions | Add, Subtract, Multiply, Divide, Integrate, Differentiate, FFT |
| Advanced Math & Equations | Define algebraic expressions, including filters and variables |
| FFT Window Types | Rectangular, Hamming, Hanning, Kaiser-Bessel, Blackman-Harris, Gaussian, Flattop2, TekExponential |
Computer System & Storage
| Parameter | Value |
|---|---|
| Operating System | Microsoft Windows |
| Internal Storage Capacity | ≥20 GB hard disk drive |
| Removable Storage Drives | 3.5 in. 1.44 MB floppy drive; CD-ROM drive |
Connectivity & Interfaces
| Parameter | Value |
|---|---|
| Analog Input Connectors | TekConnect interface (4 channels) |
| GPIB Interface | IEEE 488.2 fully programmable |
| LAN Port | RJ-45, 10/100 Base-T |
| VGA Output Port | DB-15 female connector for external display |
Connectivity
| Parameter | Value |
|---|---|
| Probe Interface | TekConnect |
| PS/2 Ports | 2 PS/2 ports (mouse and keyboard) |
| Serial Port | 1 DB-9 COM1 port |
| Parallel Port | 1 DB-25 parallel port (EPP/ECP) |
| Audio Ports | 3.5 mm Line-in, Line-out, and Microphone jacks |
Power
| Parameter | Value |
|---|---|
| Mains Input Voltage | 100 to 240 V AC ±10% |
| Mains Input Frequency | 47 to 63 Hz (100 to 240 V), 360 to 440 Hz (100 to 120 V) |
Triggering
| Parameter | Value |
|---|---|
| Auxiliary Trigger Input | TekConnect interface |
Compliance & Safety
| Parameter | Value |
|---|---|
| EMC Compliance | 89/336/EEC, EN 61326-1, AS/NZS 2064 |
| Safety Certifications | UL 3111-1, CSA 1010.1, EN 61010-1 |
Storage
| Parameter | Value |
|---|---|
| Floppy Drive | 3.5 in. 1.44 MB floppy disk drive |
Triggering Options
| Parameter | Value |
|---|---|
| Clock Recovery Frequency Range | 1.5 Mbaud to 3.125 Gbaud (with Option SM or ST) |
| Serial Pattern Triggering Length | 64-bit pattern (with Option ST) |
| Comm Triggering Standards | AMI, HDB3, BnZS, CMI, MLT3, and NRZ coded signals (with Option SM) |
Technology
Digital Phosphor Oscilloscope (DPO)
Applications
High-speed digital design, jitter and timing analysis, compliance testing, and serial data validation