# Keysight 66000A 1200 W DC Modular Power System Mainframe, GPIB (Pre-Owned) # Keysight 66000A 1200 W DC Modular Power System Mainframe, GPIB (Pre-Owned) ## Key Features At A Glance - 8-slot mainframe accepts up to eight DC power modules with 1200 W total DC power output and up to 150 W per module - GPIB-programmable voltage and current with programmable over-voltage and over-current protection - LIST mode output sequencing with up to 20 voltage, current, and dwell-time parameter sets per output for controller-independent test execution - Quick-disconnect connector assembly on each module allows hot-swap reconfiguration from the front without disturbing rack cabling - Serial link feature controls up to 16 outputs at one GPIB address by connecting an auxiliary mainframe (serial link cable included) - Optional isolation and polarity reversal relays (Option 760) and built-in measurements with five nonvolatile store-recall states per output - Output terminals can be floated up to ±240 VDC from chassis ground; remote sensing supported - Command set compatible with IEEE-488.2 and SCPI; VXIplug&play software driver The Keysight 66000A is a 1200 W DC modular power system built on a 7-inch-high (4-EIA-unit) mainframe that accepts up to eight DC power modules. It is designed for ATE and production-test environments where bias power and stimulus must be supplied to subassemblies and final products from a single rack-efficient chassis. A power supply provides controlled DC power to a device under test at a specified voltage and current — the 66000A extends that fundamental role into a multi-channel, programmable, modular platform that scales with the test station. According to the datasheet, the 66000A is intended for ATE and production-test applications, supplying bias power and stimulus to subassemblies and final products. The output sequencing feature is positioned for increasing test throughput by downloading up to 20 voltage, current, and dwell-time parameter sets per output and executing those sequences without controller intervention. The datasheet also notes that one 66000A mainframe can be connected with up to eight 6640, 6650, 6670, 6680, 6690, or 6030 series system power supplies through the serial link, providing power ranges from 150 watts to 5000 watts at one primary GPIB address. ValueTronics International stocks and tests modular power systems and DC power supplies from our 20,000 square-foot secure warehouse at 1675 Cambridge Drive, Elgin, Illinois. Mainframes and individual power modules are inspected, electrically verified, and graded by our own technicians before shipment — not drop-shipped from a third party. Calibration documentation can be added to any order during ordering. The combination of in-house inventory, in-house testing, and a named contact who knows the equipment is what separates a ValueTronics order from a marketplace transaction. ## Brand Heritage The 66000A originated within Hewlett-Packard's test and measurement business, which was spun out as Agilent Technologies in 1999 and then divided again in 2014, with the electronic measurement product lines becoming Keysight Technologies. Instruments in this family may carry HP, Agilent, or Keysight branding depending on manufacture date; all three brands trace to the same engineering lineage and product continuity is maintained under Keysight today. ## Compare Other Models in This Series The 66000A is the 1200 W, 8-slot GPIB mainframe at the center of Keysight's 66000-series modular power system. The mainframe itself is a single model; the family character of the platform comes from the module catalog (66101A through 66106A) and the special-order J-option variants that populate the eight slots according to the application's voltage, current, and channel-count requirements. Module selection is the primary configuration decision. Modules differ in output voltage range (8 V through 200 V) and output current (0.75 A through 16 A), with each module rated up to 150 W (the 66101A is the exception at 128 W). The mainframe, sequencing engine, GPIB interface, protection features, and mechanical envelope are common to every configuration. Each pre-owned 66000A mainframe and module listed below is its own dedicated product page with condition-matched pricing. Mainframes and modules are typically sold separately so the channel count and module mix can be matched to the application — confirm the populated module configuration on each specific listing. The 66000A is the standard 1200 W, 8-slot mainframe in the 66000 modular power system. Where Keysight's discrete benchtop and rack supplies deliver a fixed voltage/current envelope per chassis, the 66000A is a slot-based platform — the chassis specification is the slot count, the total power budget, and the GPIB/sequencing infrastructure, and the deliverable output ratings are set by which modules occupy the slots. Within the 66000A populated configurations, modules differ along three axes: output voltage range, output current rating, and the resulting maximum power per slot. The 66101A (0–8 V at 16 A, 128 W) is the high-current low-voltage module; the 66106A (0–200 V at 0.75 A, 150 W) is the high-voltage low-current module. The 66102A, 66103A, 66104A, and 66105A occupy the intermediate range at 20 V/7.5 A, 35 V/4.5 A, 60 V/2.5 A, and 120 V/1.25 A respectively, each at 150 W. Programming and readback accuracy specifications scale with each module's voltage range — the 0.03% programming and 0.02% readback percentages are constant, but the fixed-offset terms (in mV and mA) grow with the module's full-scale range. The comparison table that follows lists the headline output ratings and accuracy offsets module-by-module. Special-order J-option variants (66101-J03, 66101-J05, 66103-J01, 66103A-J02, 66103A-J09, 66103A-J12, 66104A-J09, 66105A-J01) target specific output combinations not covered by the standard catalog modules. Model Output Voltage Output Current Maximum Power **66000A** — — 1200 W total 66101A 0 to 8 V 0 to 16 A 128 W 66102A 0 to 20 V 0 to 7.5 A 150 W 66103A 0 to 35 V 0 to 4.5 A 150 W Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Accessories Supplied - Serial link cable (standard with 66000 MPS mainframe) - Full documentation on CD-ROM (user's guide, installation guide, programming guide, service manual, quick start guide, and application notes) ## Product Core & Specifications Specification Value Mainframe slots 8 (accepts up to 8 DC power modules) Total DC power output 1200 W Maximum power per module 150 W Mainframe height 7 inches (4-EIA units) DC floating voltage Output terminals can be floated up to ±240 VDC from chassis ground Remote sensing Up to half the rated output voltage can be dropped across each load lead. Add 2 mV to the voltage load regulation specification for each 1 V change in the negative output lead caused by a load current change. Command processing time Average 20 ms for the output voltage to change after getting a GPIB command Output programming response time (with full resistive load) Rise and fall time (10% to 90% and 90% to 10%) of output voltage less than 20 ms; settles within 0.1% of final value in less than 120 ms Down programming Active down programmer sinks approximately 10% of rated output current Calibration interval One year AC input voltage / max current 100 VAC / 29 A; 120 VAC / 25 A; 200 VAC / 16 A; 220 VAC / 16 A; 230 VAC / 15 A; 240 VAC / 15 A Input power 3200 VA (max.), 1800 W (max.), 1600 W (typ.) GPIB interface capabilities SH1, AH1, TE6, LE4, SR1, RL1, PP0, DC1, DT1, E1, and C0; command set compatible with IEEE-488.2 and SCPI Software driver VXIplug&play Regulatory compliance Listed to UL 1244; certified to CSA 22.2 No. 231; conforms to IEC 61010-1 Size 425.7 mm W × 192 mm H × 677.93 mm D (16.76 in × 7.28 in × 26.69 in), including feet and rear connectors Net weight 15 kg (33 lb) Shipping weight 19 kg (42 lb) **Important:** Maximum DC floating voltage at the output terminals: ±240 VDC from chassis ground. Add 2 mV to the voltage load regulation specification for each 1 V change in the negative output lead caused by a load current change when using remote sense.**Important:** Calibration interval: One year (per the datasheet's supplemental characteristics).**Important:** Output terminals can be floated up to ±240 VDC from chassis ground.**Important:** DC power modules are required to use the 66000A mainframe; modules (66101A through 66106A or special-order J-suffix variants) must be ordered separately and are not included with the mainframe.**Important:** A quick-disconnect connector assembly is shipped with each power module; the field-installable relay kit (p/n 5060-3351) and connector assemblies (p/n 5060-3386 / 5060-3387) are available as separate accessories.**Important:** Support rails (E3663AC) are required when using the 1CM023A rack mount flange kit or 1CP013A rack mount flange and handle kit.Recommended pairing: the 66001A MPS keyboard (2 m cables included) for local front-panel control of the 66000A mainframe, with the 66002A rack kit when keyboard rack-mounting is required. ## 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:** 995.0 USD - 1115.0 USD - **Vendor:** Keysight - **Type:** Mainframe - **Tags:** 66000, 66000A, Agilent, Agilent Keysight, Agilent Technologies, consignment-active, DC Power Supply, Keysight, Keysight Technologies, Manufacturers, Model 66000, Power Supplies & Loads, Pre-Owned, product_manual_group_1, Product_used ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 995.00 USD | In stock | | NIST Traceable | 1072.00 USD | In stock | | NIST Traceable with Full Data | 1086.00 USD | In stock | | ISO IEC 17025 Accredited | 1115.00 USD | In stock | ## Images - Keysight 66000A 1200 W DC Modular Power System Mainframe, GPIB (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/66000a-agilent-dc-power-supply-used) > Updated: 2026-05-30