| 001 | 75 ohm Input Impedance |
| 004 | Precision Frequency Reference |
| 009 | Local Oscillator and Sweep + Tune Outputs (rear panel) |
| 010 | Built-in Tracking Generator, 50 Ohm (100 kHz-2.9 GHz) |
| 012 | DECT Source |
| 015 | Protective Soft Tan Carrying/Operating Case |
| 016 | Protective Soft Yellow Operating/Carrying Case |
| 021 | HPIB Interface |
| 023 | RS232-C interface |
| 040 | Front Panel Protective Cover w/CRT Viewing Hood |
| 041 | GP-IB Interface and Parallel Printer Interface |
| 042 | Gray spectrum analyzer backpack |
| 043 | RS-232 Interface and Parallel Printer Interface |
| 044 | Yellow spectrum analyzer backpack |
| 050 | Improved Amplitude Accuracy for NADC-TDMA/PCS Bands |
| 051 | Improved Amplitude Accuracy for PDC Bands |
| 052 | Improved Amplitude Accuracy for PHS Band |
| 053 | Improved Amplitude Accuracy for CDMA/PCS Bands |
| 0B0 | Do not include manuals |
| 0Q8 | Factory Delivered Service Training |
| 101 | Fast Time-Domain Sweeps and Analog + Display |
| 102 | AM/FM Demodulator with Speaker and TV Sync Trigger |
| 103 | Quasi-peak detector, AM/FM demod w/ speaker |
| 105 | Time-Gated Spectrum Analysis |
| 107 | TV Receiver Video Tester |
| 110 | CT2 Demodulator |
| 111 | Group Delay with Compatible Tracking Generator |
| 112 | DECT demodulator card |
| 119 | Noise figure card |
| 130 | Narrow Resolution Bandwidths (30 Hz,100 Hz,300 Hz and 200 Hz EMI) |
| 140 | Narrow Resolution Bandwidths/Precision Frequency Reference |
| 151 | DSP, Fast ADC, and Digital Demodulator |
| 160 | Mobile Comm firmware and DSP for Opt 151 hardware |
| 161 | NADC-TDMA firmware ROM for Option 151 |
| 162 | PDC firmware for Option 151 |
| 163 | GSM/DCS DSP F/W board for opt. 151 hardware |
| 180 | TV Picture On Screen (NTSC, PAL, and SECAM) |
| 301 | TV Sync. Trigger Capability, Fast Time Domain Sweeps, AM/FM Demodulator, and Analog + Display |
| 578 | 009 & TG Combo material |
| 579 | Standard material |
| 711 | 50/75 Ohm Matching Pad with 100V DC Block |
| 908 | Rack Flange Kit for Use without Handles |
| 909 | Front Handle & Rack Flange Kit |
| 910 | Additional operating and service manual |
| 915 | Component Level Information and Service Guide |
| AB0 | Taiwan Quick Users Guide (Chinese localization) |
| AB2 | China Quick Users Guide (Chinese 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) |
| B70 | BenchLink spectrum analyzer software |
| BD0 | Code Division Multiple Access |
| BD1 | Global System for Mobile Communication |
| BD2 | North American Digital Cellular System |
| BD3 | Pacific Digital Cellular System |
| BD4 | Personal Handyphone System |
| C09 | |
| E02 | DRTS -Digital Trunked Radio System ATnT |
| E4444A | BenchLink Spectrum Analyzer Connectivity Software |
| E67 | DECT ordering convenience pack |
| E85 | RF/Microwave Measurements Option Bundle (not available on the 8591E) |
| H01 | DELETE MANUALS OPTION |
| H71 | |
| H91 | REAR PNL BASEBAND VIDEO INPUT W/OPT 107 |
| R01 | Fast Time-Domain Sweeps and Analog + Display Retrofit Kit |
| R02 | AM/FM Demodulator with Speaker and TV Sync. Trigger Circuitry Retrofit Kit |
| R04 | Precision Frequency Reference Retrofit Kit |
| R05 | CT-2 Demodulator Card Retrofit |
| R06 | DECT Demodulator Card Retrofit |
| R07 | TV Receiver/Video Tester Retrofit Kit |
| R15 | Time-Gated Spectrum Analysis |
| R16 | Protective Soft Yellow Operating/Carrying Case |
| R17 | TV Receiver/Video Tester Retrofit Kit |
| R19 | Noise Figure Card Retrofit Kit |
| R21 | GPIB INTERFACE RETROFIT KIT |
| R23 | RS-232 INTERFACE RETROFIT KIT |
| R24 | Parallel Printer Interface Retrofit Kit |
| R25 | Protective Soft Tan Operating/Carrying Case Retrofit Kit |
| R30 | Narrow Resolution Bandwidths Retrofit Kit |
| R41 | GPIB and Parallel Parallel Printer Interface Retrofit Kit |
| R43 | RS-232 Interface and Parallel Printer Interface Retrofit Kit |
| R50 | Improved Amplitude Accuracy for NADC-TDMA/PCS Bands Retrofit Kit |
| R51 | Improved Amplitude Accuracy for PDC Bands Retrofit Kit |
| R52 | Improved Amplitude Accuracy for PHS Bands Retrofit Kit |
| R53 | Improved Amplitude Accuracy for CDMA Bands Retrofit Kit |
| R60 | PDC/PHS/NADC/CDMA Firmware Retrofit Kit |
| R61 | NADC firmware ROM retrofit kit - Opt 151 |
| R62 | PDC firmware for Option 151 retrofit kit |
| R63 | GSM900/DCS1800 Firmware Retrofit Kit |
| R70 | PDC/PHS/NADC/CDMA Firmware + Opt 151 Retrofit Kit |
| R71 | NADC demod retrofit kit for 8590E Series |
| R72 | PDC firmware and Option 151 retrofit kit |
| R73 | DSP, Fast ADC, and Digital Demodulator with GSM800/DCS1800 Firmware Retrofit Kit |
| R80 | TV Picture On Screen Retrofit Kit |
| RMKT | Agilent Refurbished Product (Do Not Use - Certiprime Option) |
| RO7 | TV Receiver/Video Tester Retrofit Kit |
| UK6 | Commercial calibration with test results data |
| W30 | 3 Years Return for Repair Service |
