# DHO5108 Rigol Digital Oscilloscope

## Rigol DHO5108 Digital Oscilloscope — 1 GHz, 8-Channel, 12-bit

### Key Features at a Glance

-   **Analog bandwidth:** 1 GHz (50 Ω, -3 dB); 500 MHz (1 MΩ, -3 dB)
-   **Input channels:** 8 analog channels + 1 EXT trigger channel
-   **12-bit vertical resolution standard** (up to 16-bit in high resolution mode)
-   **Max. sample rate:** 4 GSa/s real-time on analog channels
-   **Max. memory depth:** 500 Mpts (single-channel & half-channel), 250 Mpts (full-channel)
-   **Max. waveform capture rate:** 1,000,000 wfms/s in Record mode
-   **Calculated rising time:** ≤400 ps (single-channel & half-channel) / ≤440 ps (full-channel)
-   **10.1" 1280×800 capacitive multi-touch display**

In summary, the Rigol DHO5108 is a 1 GHz, 8-channel digital oscilloscope built on Rigol's Centaurus platform with 12-bit vertical resolution standard, 4 GSa/s real-time sample rate, and 500 Mpts maximum memory depth. At 1 GHz analog bandwidth (50 Ω, -3 dB), the DHO5108 crosses into high-performance territory — the tier required for higher-speed digital interfaces, faster switching power semiconductors (SiC and GaN), and any signal where the 3–5× bandwidth rule pushes the requirement above 500 MHz. The calculated rising time of ≤440 ps means edges as fast as a few hundred picoseconds reproduce faithfully on screen.

### What is the Rigol DHO5108 used for?

The DHO5108 is used by design engineers, embedded systems developers, and production test teams to visualize, measure, and characterize electrical signals as waveforms in the time domain. Its 8 analog channels cover analog, power electronics, and general digital design workflows where digital bus debug is not the primary requirement.

### Why does 12-bit resolution matter on this oscilloscope?

12-bit vertical resolution gives 4,096 quantization levels — sixteen times finer than the 256 levels of a conventional 8-bit oscilloscope. On a 400 V full-scale measurement, that means 97.6 mV per count instead of 1.56 V per count. For engineers measuring switching ripple on a high-voltage rail, characterizing GaN HEMTs and SiC MOSFETs, or doing precision analog work, the 12-bit floor is the difference between resolving the signal and not seeing it. With 8 analog channels on a 12-bit, 4 GSa/s acquisition system, the DHO5108 covers analog and power-electronics workflows where digital bus debug is not the primary need. Note that DHO-family models do not include the 16 digital channels found on MHO models; if mixed-signal debug becomes a requirement, the MHO equivalents (MHO5104 or MHO5106) offer the digital channel capability.

### Factual Grounding — Specifications & Industry Context

The Rigol DHO5108 delivers 1 GHz (50 Ω, -3 dB) analog bandwidth with a calculated rising time of ≤400 ps (single-channel & half-channel) / ≤440 ps (full-channel), 4 GSa/s real-time sample rate (4 GSa/s (single-channel & half-channel), 2 GSa/s (full-channel)), 500 Mpts maximum memory depth, a vertical sensitivity range of 100 µV/div to 10 V/div on 1 MΩ input, and ENOB of 7.7 (typical) at full bandwidth. The platform sustains a maximum waveform capture rate of 1,000,000 wfms/s in Record mode and 200,000 wfms/s in Vector mode, with peak detection that captures 500 ps glitches. Noise floor figures published in the datasheet reach as low as 31.2 µVrms at 100 µV/div on the 50 Ω input with the 20 MHz bandwidth limit engaged.

### Entity Authority — Rigol & the Centaurus Platform

Rigol Technologies, founded in 1998, is a recognized value-tier manufacturer of oscilloscopes, signal generators, spectrum analyzers, and power supplies, with growing share in mid-range professional bench instrumentation. The MHO/DHO5000 Series is Rigol's first Centaurus-platform release for the mainstream digital oscilloscope market, designed to deliver 12-bit resolution and 1 GHz bandwidth at price points historically associated with 8-bit instruments. The platform conforms to IEC 61326-1:2013 / EN 61326-1:2013 Group 1 Class A electromagnetic compatibility requirements, EN 61010-1:2019 and UL 61010-1:2012 R7 safety standards, MIL-PRF-28800F class 3 random vibration testing, and IEC 60068-2-27 class 3 mechanical shock testing.

### How does the DHO5108 compare to baseline 8-bit oscilloscopes?

-   **Vertical resolution:** 12-bit standard (4,096 levels) vs. 8-bit on most competing mid-range scopes — 16× finer quantization for ripple, noise floor, and precision analog measurement.
-   **Memory depth:** 500 Mpts standard — supports long capture windows at full sample rate without forcing tradeoffs between memory depth and sample rate.
-   **Capture rate:** 1,000,000 wfms/s in Record mode for high probability of capturing rare and intermittent events.
-   **Bandwidth scalability:** 500 MHz models can be field-upgraded to 1 GHz via the appropriate BWU05T10 option license — eliminating the need to repurchase the instrument when application bandwidth grows.
-   **Channel count:** 8 analog channels allow simultaneous view of three-phase power signals plus control and feedback paths with full 4 GSa/s sample rate on single-channel and half-channel operation.
-   **Battery-pack option:** Convenient charging for on-site, field, and in-vehicle measurement scenarios where mains power is not practical.

### Typical Applications & Workflows

-   **Motor controllers & three-phase power analysis** — eight analog channels enable simultaneous capture of three voltage and three current phases plus control and feedback.
-   **Power semiconductor testing** — GaN and SiC device characterization, where the 12-bit floor and 500 MHz/1 GHz bandwidth resolve switching edges and dynamic on-resistance behavior.
-   **Power supply design** — ripple, noise floor, transient response, switching loss analysis (with optional PWRA power analysis option).
-   **Standard serial decode** — Parallel, RS232/UART, I2C, and SPI included; CAN, CAN-FD, LIN, FlexRay, I2S, and MIL-STD-1553 available as software options.
-   **Embedded systems development** — Bode plot for control loop frequency response (standard only on MHO5054/MHO5104), pass/fail mask test for signal validation, and the search-and-navigation function for locating signal anomalies in long captures.

### Accessories Supplied with the DHO5108

Item

Quantity

Notes

Power Cord

1

Conforming to the standard of the destination country

USB Cable

1

Standard USB Device cable

RP3500A Passive High-Impedance Probe (500 MHz, 10:1)

8

One per analog channel

### Recommended & Optional Accessories for the DHO5108

Order No.

Description

DHO5000-AUTOA

CAN, CAN-FD, LIN bus trigger and analysis option

DHO5000-AEROA

MIL-STD-1553 bus trigger and analysis option

DHO5000-FLEXA

FlexRay serial bus trigger and analysis option

DHO5000-AUDIOA

I2S bus trigger and analysis option

DHO5000-PWRA

Power analysis option

DHO5000-BND

Function and application bundle option, including AUTOA/AEROA/FLEXA/AUDIOA/PWRA

Compatible Probes

PVP2150, PVP2350, PVP3150 passive; RP1010H/RP1018H/RP1300H high-voltage; PHA0150/PHA1150/PHA2150 and RP1025D/RP1050D/RP1100D differential; RP7080/RP7150/PVA7250 low-voltage differential; RP7080S/RP7150S/PVA8150S single-ended active; PCA1030/PCA1150/PCA2030/PCA1500, RP1001C/RP1002C/RP1003C/RP1004C/RP1005C/RP1006C current; PIA1000 optical-fiber isolated

### Building the Measurement: The 12-bit Centaurus Floor

The DHO5108 sits on Rigol's self-developed Centaurus technical platform. The first specification to understand is the 12-bit ADC: with 4,096 vertical quantization levels instead of the 256 levels of a conventional 8-bit oscilloscope, the platform resolves signals 16× finer at any given vertical scale. For a 400 V full-scale measurement, that is the difference between 1.56 V per count (8-bit) and 97.6 mV per count (12-bit) — and in high-resolution mode, the DHO5108 extends to 16-bit, bringing per-count resolution to 24.4 mV at the same full scale. This is the resolution required to resolve switching ripple on a high-voltage rail, to characterize the gate behavior of GaN and SiC power transistors, and to do precision analog measurement work that 8-bit instruments cannot support.

### Vertical System — Analog Channel

Analog Bandwidth (50 Ω, -3 dB)

1 GHz

Analog Bandwidth (1 MΩ, -3 dB)

500 MHz

Calculated Rising Time under 50 Ω (10%–90%, typical)

≤400 ps (single-channel & half-channel) / ≤440 ps (full-channel)

Number of Input Channels

8 analog channels + 1 EXT channel

Max. Sample Rate

4 GSa/s (single-channel & half-channel), 2 GSa/s (full-channel)

Max. Memory Depth

500 Mpts (single-channel & half-channel), 250 Mpts (full-channel)

Input Coupling

DC, AC, or GND

Input Impedance

1 MΩ ± 1%, 50 Ω ± 1%

Input Capacitance

19 pF ± 3 pF

Probe Attenuation Coefficient

0.001X to 50000X plus user-defined

Probe Recognition

Auto-recognized RIGOL probe

Maximum Input Voltage

1 MΩ: CAT I 300 Vrms, 400 Vpk (DC + Vpeak); 50 Ω: 5 Vrms

Vertical Resolution

12-bit (up to 16-bit in high resolution mode)

ENOB (Typical)

7.7 at 1 GHz BW; 7.7 at 500 MHz BW; 8.0 at 250 MHz BW

Vertical Sensitivity Range

1 MΩ: 100 µV/div to 10 V/div; 50 Ω: 100 µV/div to 1 V/div

Offset Range (1 MΩ)

±1 V (≥1 mV/div, ≤65 mV/div); ±10 V (>65 mV/div, ≤270 mV/div); ±20 V (>270 mV/div, ≤2.75 V/div); ±100 V (>2.75 V/div, ≤10 V/div)

Offset Range (50 Ω)

±1 V (≥1 mV/div, ≤135 mV/div); ±4 V (>135 mV/div)

Dynamic Range

±4 div (12 bits)

Bandwidth Limit (Typical)

20 MHz, 250 MHz, FULL — selectable per channel; auto 250 MHz at ≤500 µV, auto 20 MHz at ≤200 µV

DC Gain Accuracy

±2% (<5 mV); ±1% (≥5 mV)

DC Offset Accuracy

≤200 mV/div: (±0.1 div ± 2 mV ± 1.5% of offset value); >200 mV/div: (±0.1 div ± 2 mV ± 1.0% of offset value)

Channel-to-Channel Isolation

≥100:1 (DC to 500 MHz), ≥30:1 (>500 MHz to rated bandwidth)

ESD Tolerance

±8 kV (on input BNCs)

### Horizontal System

Range of Time Base

200 ps/div to 500 s/div; fine adjustment supported

Time Base Resolution

20 ps

Time Base Accuracy

±1.5 ppm ± 1 ppm/year

Time Base Delay Range (Pre-trigger)

\-5 div

Time Base Delay Range (Post-trigger)

1 s or 100 div, whichever is greater

Delta Time Accuracy

±(Time Base Accuracy × Readout) ± (0.001 × Screen Width) ± 20 ps

Channel-to-Channel Skew Correction

Range ±100 ns, Accuracy ±1 ps

Analog Channel-to-Channel Delay (Typical)

≤200 ps

Horizontal Modes

YT (default); XY (CH 1/2/3/4/5/6/7/8); SCAN (≥200 ms/div); ROLL (≥50 ms/div or ≥100 ms/div selectable)

### Acquisition System

Sampling Mode

Real-time Sampling

Acquisition Modes

Normal (default); Peak Detection (500 ps glitches); Average (2 to 65536); High Resolution (14-bit, 16-bit); Waveform Recording; Vector Mode

Max. Waveform Capture Rate

1,000,000 wfms/s (Record mode); 200,000 wfms/s (Vector mode)

Max. Frames of Waveform Recording

500,000 frames

### Trigger System

Trigger Source

Analog channel (1~8), EXT TRIG, AC Line

Trigger Mode

Auto, Normal, Single

Trigger Coupling

DC; AC (cut-off ~16 kHz); High Frequency Rejection (~200 kHz); Low Frequency Rejection (~180 kHz); Noise Rejection on/off

Holdoff Range

8 ns to 10 s

Trigger Bandwidth — Internal

Analog Bandwidth

Trigger Bandwidth — External

200 MHz

Trigger Sensitivity — Internal

0.50 div, ≥50 mV/div; 0.7 div with noise rejection enabled

Trigger Sensitivity — External

200 mVpp (DC to 100 MHz); 500 mVpp (100 MHz to 200 MHz)

EXT TRIG Input Impedance

1 MΩ ± 1%, BNC connector

Trigger Jitter (Typical)

<1 nsrms

Trigger Level Range — Internal

±5 div from center of screen

Trigger Level Range — External

±5 V

Standard Trigger Types

Edge, Pulse, Slope, Video, Pattern, Duration, Timeout, Runt, Window, Delay, Setup/Hold, Nth Edge, I2C, SPI, RS232/UART

Optional Trigger Types

CAN, CAN-FD, LIN (AUTOA); FlexRay (FLEXA); I2S (AUDIOA); MIL-STD-1553 (AEROA)

### Waveform Measurement & Analysis

Cursor

2 pairs of XY cursors; Manual, Track, Auto Measurement, XY Mode

Auto Measurements

41 automatic measurements; up to 14 displayed at a time

Vertical Measurements

Vmax, Vmin, Vpp, Vtop, Vbase, Vamp, Vupper, Vmid, Vlower, Vavg, VRMS, Per. VRMS, Overshoot, Preshoot, Area, Period Area

Horizontal Measurements

Period, Frequency, Rise Time, Fall Time, +Width, -Width, +Duty, -Duty, Positive Pulse Count, Negative Pulse Count, Rising Edge Count, Falling Edge Count, Tvmax, Tvmin, +Slew Rate, -Slew Rate

Statistics

Current, Average, Max, Min, Standard Deviation, Count; statistical times settable

Math Functions

4 simultaneously: A+B, A-B, A×B, A/B, FFT, A&&B, A||B, A^B, !A, Intg, Diff, Lg, Ln, Exp, Sqrt, Abs, AX+B, LowPass, HighPass, BandPass, BandStop

FFT

Up to 1 Mpts record; Rectangular, Blackman-Harris, Hanning (default), Hamming, Flattop, Triangle; max 15 peaks

Waveform Recording

Up to 500,000 segments; supports frame-by-frame and continuous playback with calculation, measurement, and decoding

Pass/Fail Test

User-defined mask comparison; success/fail/total count; immediate stop, beeper, screenshot triggers

Color Grade

Dimensional view, >16 color grade, 256-level color scale; temperature and intensity themes

### Serial Decoding

Four protocol types can be decoded and enabled at the same time. Standard decoding includes Parallel, RS232/UART, I2C, and SPI. Optional decoding adds LIN, CAN, CAN-FD (MHO/DHO5000-AUTOA), FlexRay (MHO/DHO5000-FLEXA), I2S (MHO/DHO5000-AUDIOA), and MIL-STD-1553 (MHO/DHO5000-AEROA).

### Built-in Measurement Tools

Digital Voltmeter

Any analog channel; DC, AC+DCrms, ACrms; 4-bit resolution; user upper/lower limits with beeper

High-Precision Frequency Counter

Any analog channel and EXT; frequency, period, totalizer; 3–6 digit resolution; max frequency at analog bandwidth; 48-bit totalizer counts rising edges

AutoScale

Minimum voltage >10 mVpp, duty cycle >1%, frequency >35 Hz

### Display, Processor & I/O

LCD

10.1" capacitive multi-touch gesture-enabled display

Resolution

1280×800 (16:9)

Graticule

10 horizontal × 8 vertical divisions

Persistence

Off, Infinite, variable (100 ms to 10 s)

Brightness

256 intensity levels (LCD, HDMI)

Processor

Cortex-A72 1.8 GHz + Cortex-A53 1.4 GHz, 6-core

System Memory

4 GB RAM

Operating System

Android

Internal Non-volatile Memory

128 GB

USB 3.0 Host

1 on front panel

USB 3.0 Device

1 on rear panel

LAN

1 on rear panel; 10/100/1000 Base-T; supports LXI-C and Web Remote Control

HDMI

1 on rear panel; HDMI 1.4, A plug

10 MHz Reference Clock Input/Output

BNC on rear panel; Input: 50 Ω, 130 mVpp to 4.1 Vpp, 10 MHz ± 10 ppm; Output: 50 Ω, 1.5 Vpp sine

AUX Out

BNC on rear; Trig Out or Pass/Fail; rise time ≤1.5 ns

Probe Compensation Output

1 kHz frequency, 0.3 V amplitude, Square

### Power, Environment & Mechanical

Power Voltage

AC 100 V to 240 V, 50 Hz to 60 Hz

Power

Max. 350 VA (with various interfaces, USB, active probes)

Fuse

3.15 A, T degree, 250 V

Operating Temperature

\-10 ℃ to +50 ℃

Non-operating Temperature

\-30 ℃ to +60 ℃

Operating Humidity

≤90% RH below +30 ℃; ≤75% RH +30 ℃ to +40 ℃; ≤45% RH +40 ℃ to +50 ℃ (without condensation)

Operating Altitude

below 3,000 m

Dimensions (W × H × D)

335 mm × 235 mm × 154 mm

Rack Mount Kit

5U

Weight (package excluded)

5.3 kg

Weight (package included)

6.3 kg

### Regulations & Compliance

-   **EMC:** Compliant with EMC DIRECTIVE 2014/30/EU; meets or exceeds IEC 61326-1:2013 / EN 61326-1:2013 Group 1 Class A; CISPR 11 / EN 55011
-   **Safety:** EN 61010-1:2019; EN 61010-031:2015; IEC 61010-1:2016; IEC 61010-2-030:2017; UL 61010-1:2012 R7; UL 61010-2-31:2017 R2; CAN/CSA-22.2 No. 61010-1-12:2017, 61010-2-30:2018, 61010-031-07:2012
-   **Vibration:** Meets GB/T 6587 class 2 random; meets MIL-PRF-28800F and IEC 60068-2-6 class 3 random
-   **Shock:** Meets GB/T 6587-2012 class 2 random; meets MIL-PRF-28800F and IEC 60068-2-27 class 3 random; non-operating: 30 g half-sine, 11 ms duration, 18 shocks

### Warranty & Calibration Interval

Warranty

Three years for the mainframe, excluding the probes and accessories.

Recommended Calibration Interval

18 months

This webpage was written by a human with an A.I. "Intern", which may contain errors. Please review the Manufacturers 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:** 16899.0 USD
- **Vendor:** Rigol
- **Type:** Dig Oscilloscope
- **Tags:** Digital, Manufacturers, Oscilloscopes, Rigol, sync_12_12

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 16899.00 USD | In stock |

## Images

- DHO5108 Rigol Digital Oscilloscope

---

> Source: [ValueTronics](https://valuetronics.com/products/dho5108-rigol-digital-oscilloscope-new)
> Updated: 2026-05-27