| 010 | Time Domain |
| 014 | Configurable Test Set Option (front panel access loops between source output and coupler input) |
| 016 | Add Reciever Attenuators (35 dB in 5 dB steps) |
| 022 | Extended Memory 512MB |
| 080 | Frequency- Offset ( for use with mixers, converters and amplifiers) |
| 081 | Reference Channel Switch (Adds internal switch to R1 Path) |
| 083 | Frequency Converter Measurement Application S/W |
| 1A7 | ISO 17025 Compliant Calibration |
| 1CM | Rackmount Kit |
| 1CP | Rackmount and Handle Kit |
| 550 | 4 Port Measurement Application (Enables full 4-port error correction and differential measurements on 2 Port N/A.) |
| 700 | Standard test set |
| 720 | Extended Memory 512 MB |
| 830 | Option Bundle Package of UNL, 014,016,080,081,and H11 |
| 831 | Option Bundle Package of UNL, 014,080,081,and H11 |
| 903 | 120V POWER CORD |
| A6J | ANSI Z540 compliant calibration with test data |
| AB1 | Korea Quick Users Guide (Korean localization) |
| AB2 | China Quick Users Guide (Chinese localization) |
| ABA | U.S. Quick Users Guide (English localization) |
| ABD | Germany Quick Users Guide (German localization) |
| ABE | Spain Quick Users Guide (Spanish localization) |
| ABF | France Quick Users Guide (French localization) |
| ABJ | Japan Quick Users Guide (Japanese localization) |
| ABZ | Italy Quick Users Guide (Italian localization) |
| H08 | Pulsed-RF measurement capability |
| H11 | IF Access (for antenna,point in pulse,pulse profile and broadband MM wave measurements.) |
| H85 | High Power Option w/o Bias Tees. (allows RF Amplifiers between RF Source and Coupler Input) |
| P02 | 2 Port |
| P04 | 4 Port |
| R-51B-001-3C | 1 year Return-to-Agilent warranty extended to 3 years |
| RMKT | Agilent Refurbished Product (Do Not Use - Certiprime Option) |
| UK6 | Commercial calibration with test results data |
| UNL | High Power Measurement w/ Bias tees Configuration (Allows Ext. Amplifiers between RF Source and Coupler Input) |
| Z5623A-H81 | 2 GHz - 20 GHz Uni Directional Pulse Test Set |
| Z5623A-H83 | 2 GHz - 20 GHz Dual Directional Pulse Test Set. |
| Z5623A-H84 | 2GHz-40 GHz Dual Directional Pulse Test Set |
| Z5623A-H85 | 1GHz-40 GHz Dual Directional Pulse Test Set |
| Z5623A-H86 | 2GHz-40 GHz Uni Directional Pulse Test Set |
| Z5623A-H87 | 1GHz-50 GHz Dual Directional Pulse Test Set |
| Z5623A-H88 | 1GHz-50 GHz Dual Directional Pulse Test Set (No HPIB) |
| Z5623A-H89 | 10 MHz - 5 GHz Uni Directional Pulse Test Set (no HPIB) |
| Z5623A-H90 | 1GHz-50 GHz Dual Directional Pulse Test Set (Test Ports on Test Set) |
