HP / Agilent 4951C Protocol Analyzer

The HP/Agilent 4951C Protocol Analyzer is a comprehensive tool for monitoring, capturing, and analyzing data communication protocols. It supports a wide range of protocols, providing real-time analysis and troubleshooting capabilities for network performance optimization and diagnostics. Ideal for network engineers and technicians.

Model
HP 4951C
Calibration
Available on request
Price
$223
RFQ ref
4951C
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This unit

The HP/Agilent 4951C Protocol Analyzer is a portable instrument for installation, maintenance, and design of data communication networks. It captures, analyzes, and simulates protocol traffic across multiple serial interfaces, supporting data rates from 50 bps to 19 kbps. Real-time monitoring, post-processing of stored data, bit error rate testing, and device emulation enable rapid network troubleshooting and performance assessment across legacy communication systems.

Technical Specifications Data Rates: 50 bps to 19 kbps Protocols Supported:

Asynchronous (Async)

BSC

SDLC (NRZI)

HDLC

X.25

SNA

DDCMP

User-defined protocols Storage: 3 ½-inch diskette (618 KB capacity) for data, timing, lead status, programs, and configurations; nonvolatile memory for persistent program and configuration storage Power Input: 100 - 240 VAC, 48 to 66 Hz; three-conductor grounded power cord Serial Interfaces: RS-232C/V.24, RS-449/422A/423A, MIL-188C, V.35 Interface Pods: HP 18177A, HP 18180A (combination RS-232/V.24 and RS-449/422A/423A), HP 18179A (RS-232C/V.24 with breakout box), HP 18174A (RS-449/422A/423A) Video & Printer: RS-170 video output port; dedicated RS-232/V.24 ASCII printer port

Key Features

Auto Configure determines line parameters for immediate monitoring

Live line or buffer capture with post-processing analysis

DTE/DCE device emulation for network component testing

Bit Error Rate Testing (BERT) for line quality assessment

Data Communications Test Library with pre-written programs

3270 cluster emulation (optional HP 18332D software)

Link-level statistical analysis for SNA and X.25 (optional HP 18333D)

Full ASCII keyboard with softkey-driven menu interface

Remote control via PC utilities for distributed analysis

Typical Applications Legacy network installation and commissioning; protocol-level troubleshooting of asynchronous, BSC, and SNA systems; line quality validation; device simulation for cluster testing; performance characterization of serial data links.

Compatibility & Integration PC utilities enable remote control and protocol data analysis. User-defined programs and configurations load from 3 ½-inch diskette storage.

Specifications

ParameterValue
Voltage / Current Range100 - 240 VAC, 48 to 66 Hz

HP 4951C — Repair & Calibration Service

Aumictech offers NIST-traceable calibration and repair for the HP 4951C. All calibrations are performed to NIST-traceable standards and ship with a certificate. Turnaround is typically 1–3 business days after receipt.

Standard Cal
$450
Pass/fail cert + NIST sticker
Cal with Data
$650
Full NIST cert with measured values

HP 4951C price

This HP 4951C is listed at $223. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.

HP 4951C calibration cost

NIST-traceable calibration for the HP 4951C is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Turnaround is 1 to 3 business days after receipt. See full calibration details →