# Tektronix TDS 654C 500 MHz Color Digital Real-Time Oscilloscope (Pre-Owned)

# Tektronix TDS 654C 500 MHz Color Digital Real-Time Oscilloscope (Pre-Owned)

## Key Features At A Glance

-   Bandwidth from 500 MHz to 1 GHz across the five-model series for fast digital signal characterization
-   Sample rates up to 5 GS/s and record lengths up to 15,000 points per channel across the series
-   Vertical sensitivity from 1 mV/div to 10 V/div with 1.5% DC gain accuracy
-   8-bit vertical resolution, extendable to greater than 11 bits with averaging
-   Digital Real-Time architecture for capturing glitches, metastable states, and intermittent signals
-   RS-232, Centronics, and GPIB (IEEE-488.2) interfaces standard for automated measurement systems
-   25 automatic measurements with waveform pass/fail template testing and advanced waveform DSP/math
-   Maximum input 300 V CAT II (±400 V peak); selectable 1 MΩ or 50 Ω input impedance

The Tektronix TDS 600 Series is a family of Digital Real-Time oscilloscopes built for high-speed, multi-channel signal characterization in modern digital designs. Its Digital Real-Time architecture is designed to simplify capturing intermittent signals and non-recurring problems such as glitches or metastable states caused by setup-and-hold time violations. The series spans 500 MHz and 1 GHz bandwidth models that give design engineers single-shot accuracy for measuring fast edges, crosstalk noise, transmission effects, and ground bounce.

The series is positioned for digital design and characterization, telecommunications and datacommunications work, transient event capture, and high energy physics. These are demanding, high-speed environments where sub-nanosecond edges and non-recurring events have to be captured reliably on the first acquisition.

ValueTronics stocks and holds its own inventory in a 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every pre-owned unit is inspected and functionally verified in-house by our technicians before it ships, while new units ship factory-sealed exactly as received from the manufacturer. Holding our own stock and verifying every used instrument firsthand is how we stand behind what we sell.

## Compare Other Models in This Series

The TDS 600 Series brings together five Digital Real-Time oscilloscopes that share a common architecture but differ in bandwidth, channel count, sample rate, record length, and display. All five target high-speed, single-shot signal characterization and share the same vertical system, 25 automatic measurements, and standard RS-232, Centronics, and GPIB interfaces.

Across the series, bandwidth spans 500 MHz to 1 GHz and sample rates run from 2 GS/s to 5 GS/s, letting a buyer match the instrument to the edge speeds and acquisition depth their application demands. The comparison table below lays out where each model lands on those axes.

Each model below links to its own dedicated product page with pre-owned-matched pricing. Choose the model whose bandwidth, channel count, and sample rate fit your application, then select the pre-owned condition and configuration that match your budget and requirements.

The TDS 684C sits at the top of the series as a four-channel color Digital Real-Time oscilloscope offering 1 GHz bandwidth and 5 GS/s on every channel simultaneously. It pairs that bandwidth with histograms and measurement statistics, advanced waveform DSP and math, and a 7-inch color display for multi-channel, high-speed characterization.

The two 1 GHz models are the TDS 680C, a two-channel monochrome instrument, and the TDS 684C, a four-channel color instrument; both sample at 5 GS/s with record lengths to 15,000 points. The 500 MHz tier comprises the TDS 654C (four-channel color, 5 GS/s), the TDS 620B (two-channel monochrome, 2.5 GS/s), and the TDS 640A (four-channel monochrome, 2 GS/s).

Histograms and measurement statistics are standard on the TDS 654C, 680C, and 684C. The 1 ns peak detect and channel deskew features are available across the series except on the TDS 640A. Record length reaches 15,000 points on every model except the TDS 640A, which provides up to 2,000 points. The comparison table summarizes these bandwidth, sample-rate, channel-count, and display differences side by side.

Model

Bandwidth

Sample Rate

Channels

**TDS 654C**

500 MHz

5 GS/s

4

TDS 684C

1 GHz

5 GS/s

4

TDS 680C

1 GHz

5 GS/s

2 + 2

TDS 620B

500 MHz

2.5 GS/s

2 + 2

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

## Accessories Supplied

-   Four P6243 FET Probes
-   User Manual (070-0130-00)
-   User Supplement (071-0273-00)
-   Quick Reference Guide (020-2235-00)
-   Programmer's Manual in MS-Help format on floppy disk (063-3120-00)
-   Technical Reference Manual (071-0272-00)
-   Front Cover (200-3696-00)
-   North American Power Cord (161-0230-01)
-   Accessory Pouch (016-1268-00)

## Product Core & Specifications

Specification

Value

Acquisition

Real-Time Bandwidth

500 MHz

Sample Rate (all channels simultaneously)

5 GS/s

Total Channels

4

Vertical Resolution

8-Bits (>11-Bits with averaging)

Maximum Record Length per Channel

15,000 pts

Acquisition Modes

Peak Detect, Sample, Single Sequence, Envelope, Average

Histograms and Measurement Statistics

Standard

Vertical System

Vertical Sensitivity

1 mV/div to 10 V/div

DC Gain Accuracy

1.50%

Maximum Input Voltage

300 V CAT II; ±400 V peak. Derate at 20 dB/decade above 1 MHz

Position Range

±5 divs

Offset

±1 V from 1 to 99.5 mV/div, ±10 V from 100 mV to 995 mV/div, ±100 V from 1 V to 10 V/div

Bandwidth Selections

20 MHz, 250 MHz, and Full

Input Impedance Selections

1 MΩ in parallel with 10 pF, or 50 Ω (AC and DC coupling)

Input Coupling

AC, DC or GND

AC Coupled Low Frequency Limit

<10 Hz when AC, 1 MΩ coupled; <200 kHz when AC, 50 Ω coupled

Channel Isolation

\>100:1 at 100 MHz and >30:1 at BW for any two channels having equal V/div settings

Time Base System

Time Bases

Main and Delayed

Time/div Range

200 ps/div to 10 s/div

Time Base Accuracy

Over any interval >1 ms, ±100 ppm

Record Length per Channel

500 to 15,000 pts

Pre-Trigger Position

0% to 100% of Record

Triggering System

Triggers

Edge (main and delayed); Pulse (Width, Glitch, Runt, Slew Rate, Time Out); Logic (Pattern, State, and Setup & Hold Time Violation); HDTV Video (optional)

Main Trigger Modes

Auto, Normal, Single

Delayed Trigger

Delay by time, events, or events and time

Delay by Time Range

16 ns to 250 s

Delay by Events Range

1 to 9,999,999 events

External Trigger Input

Input Impedance ≥1.5 kΩ; Max. Input Voltage ±20 V (DC + peak AC)

Measurement System

Automatic Measurements

25 (on entire record or gated region)

Time Measurement Accuracy

<50 ps @ 5 GS/s

Measurement Accuracy

<50 ps typical @ 5 GS/s single shot

Cursors Measurement

Absolute, Delta; volts, time, frequency, NTSC IRE units and line number with Video Trigger Option

Display

Display Type

7 in. diagonal NuColor liquid crystal full-color shutter, 256 levels

Waveform Processing

Waveform Functions

Interpolation (sin(x)/x or linear), Average, Envelope, Auto Setup

Advanced Waveform Functions

FFT, Integration, Differentiation, Waveform (math or acquired) Limit Testing

Standard Accessories

Standard Probes

Four P6243 FET Probes

> **Important:** Maximum input voltage: 300 V CAT II; ±400 V peak. Derate at 20 dB/decade above 1 MHz.

> **Important:** The TDS 684C and TDS 680C are supplied with no standard probes (Standard Probes: None on the selection chart); appropriate probes for the 1 GHz bandwidth must be ordered separately (see options Opt. 33–37 or Recommended Accessories).

> **Important:** 5 GS/s sample rate is not available with the TDS 620B or TDS 640A.

> **Important:** External Trigger Input maximum input voltage is ±20 V (DC + peak AC).

> Recommended pairing: use WaveStar software for PC-based waveform capture, analysis, documentation, and control from your PC, listed among the series' recommended accessories.

## About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

-   ValueTronics warranty included.
-   Functional verification included.
-   Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
-   Note that unnecessary accessories may not be included (contact Test Architect to confirm).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

**Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.**

## Details

- **Price:** 0.0 USD - 262.5 USD
- **Vendor:** Tektronix
- **Type:** Dig Oscilloscope
- **Tags:** Digital, Manufacturers, Oscilloscopes, product_manual_group_1, Product_used, Tektronix

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| None | 0.00 USD | In stock |
| NIST Traceable | 187.50 USD | In stock |
| NIST Traceable with Full Data | 225.00 USD | In stock |
| ISO IEC 17025 Accredited | 262.50 USD | In stock |

## Images

- Tektronix TDS 654C 500 MHz Color Digital Real-Time Oscilloscope (Pre-Owned)

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> Source: [ValueTronics](https://valuetronics.com/products/tds654c-tektronix-digital-oscilloscope-used)
> Updated: 2026-06-02