# B&K Precision 1823A 2.4GHz Universal Frequency Counter with Ratio Function (Pre-Owned)

# B&K Precision 1823A 2.4GHz Universal Frequency Counter with Ratio Function (Pre-Owned)

## Key Features At A Glance

-   Frequency measurement range from 0.1 Hz to 2.4 GHz in a single benchtop instrument
-   Reciprocal counting architecture with microprocessor control for eight digits of resolution at the 10 s gate time
-   Time base stability of ±1 ppm for repeatable frequency measurements
-   Universal function set: frequency, period, time interval, totalize, and frequency ratio
-   External frequency standard input for locking to a lab house reference
-   RS-232 interface for remote control and data logging
-   Front-panel attenuator, low-pass filter, and line filter for signal conditioning at the input
-   Bright LED display with data hold and self-test

The B&K Precision 1823A is a 2.4 GHz universal frequency counter built around a reciprocal counting architecture and microprocessor control. It measures frequency from 0.1 Hz up to 2.4 GHz, and the LED display provides eight digits of resolution when the internal 10 s gate time is used. The instrument is positioned for scientists, engineers, experimenters, and communications technicians who need a single benchtop counter that spans audio through low-microwave frequencies.

A frequency counter answers a specific question on the bench: what is the precise frequency, period, or timing relationship of this signal? The 1823A handles that question across five measurement functions — frequency, period, time interval, totalize, and frequency ratio — making it useful for characterizing oscillators, clock sources, signal generators, transmitters, and the timing of digital and RF circuits. The ratio function lets the user measure one frequency relative to another, which is helpful when comparing two clocks or verifying a frequency multiplier or divider stage.

## Brand Heritage

B&K Precision was founded in 1951 and has operated under that name continuously as a US-based test and measurement manufacturer headquartered in Yorba Linda, California. The brand has not gone through the kind of acquisition and rebrand chain that has affected many T&M lines, so a 1823A from B&K Precision today comes from the same corporate identity that has carried the B&K name for decades.

## Product Core & Specifications

Specification

Model 1823A

Range

0.1 Hz to 2.4 GHz

Frequency

Yes

Totalize

Yes

Period

Yes

Time Interval

Yes

Ratio

Yes

Time Base Stability

±1 PPM

Data Hold

Yes

Low Pass Filter

Yes

Remote Start-Stop

Yes

Self Test

Yes

Display

Bright LED, 8 digits of resolution using internal 10 S gate time

External Frequency Standard Input

Yes

Attenuator

Yes

Line Filter

Yes

Trigger Function

Yes

Interface

RS232

**Important:** Maximum input frequency: 2.4 GHz. Time base stability: ±1 ppm. For tighter frequency accuracy, connect a higher-stability reference to the External Frequency Standard input.

## About this used unit

-   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).

**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:** 492.0 USD
- **Vendor:** B&K Precision
- **Type:** Freq Coun
- **Tags:** BK Precision, Frequency Counter, Manufacturers, Other Equipment, product_manual_group_2, Product_used

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 492.00 USD | In stock |

## Images

- 1823A BK Precision Frequency Counter

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> Source: [ValueTronics](https://valuetronics.com/products/1823a-b-k-precision-frequency-counter-used)
> Updated: 2026-05-30