The Keysight N6705C DC Power Analyzer is a versatile, multi-functional power system that integrates the capabilities of a multiple-output DC voltage source with waveform and data capture features typically found in oscilloscopes and data loggers. This instrument is designed for professional use in electromagnetic environments outside of the home, offering a comprehensive solution for power analysis.
Function Description:
The N6705C serves as both a power source and a measurement system. As a DC source, it provides up to four configurable outputs, with power modules ranging from 20 W to 500 W. These modules offer various voltage and current combinations and can operate as either constant voltage (CV) or constant current (CC) sources. A key feature is its arbitrary (Arb) waveform generation capability, allowing users to program predefined or custom voltage and current waveforms. Keysight N678xA Source/Measure Units (SMUs) further enhance this by offering multiple-quadrant power mesh with distinct voltage and current priority source modes.
As a measurement system, the N6705C offers several views:
- Meter View: Displays average output voltage and current in real-time.
- Scope View: Shows voltage and/or current waveforms of all outputs simultaneously, with adjustable vertical and horizontal controls and markers for calculated measurements.
- Data Logger View: Measures and charts average and peak voltage and current over extended periods, also with adjustable markers.
- Arbitrary Waveform Preview: Provides a visual representation of configured arbitrary waveforms.
Important Technical Specifications:
- Maximum Total Power: 600 W for power modules.
- Front Panel Output Terminals: Maximum current rating of 20 A.
- BNC Trigger Connectors: Digital TTL level compatible, with a maximum voltage of 5 V. Input pulses require >6 ns for positive-going and >90 ns for negative-going signals. Output pulses are 10 ms, negative-going.
- USB Current Ratings: Front panel USB: 200 mA; Rear panel USB: 300 mA.
- Internal Flash Memory: 4 Gbytes for data storage.
- Protection Response: INH Input: 5 µs from inhibit receipt to shutdown start; Fault on coupled output: <10 µs from fault receipt to shutdown start.
- Command Processing Time: ≤1 ms from command receipt to output change.
- Digital Control Characteristics: +16.5 VDC/-5 VDC between pins (pin 8 is chassis ground). Max low-level output voltage: 0.5 V @ 4 mA. Max low-level sink current: 4 mA. Typical high-level leakage current: 1 mA @ 16.5 VDC. Max low-level input voltage: 0.8 V. Min high-level input voltage: 2 V. Typical low-level current: 2 mA @ 0 V. Typical high-level leakage current: 0.12 mA @ 16.5 VDC.
- Interface Capabilities: LXI Core 2011, USB 2.0 (USB-TMC488), 10/100/1000 Base-T Ethernet (Sockets, VXI-11 protocol, Web interface), Built-in Web server, GPIB (SCPI - 1993, IEEE 488.2 compliant).
- Regulatory Compliance: Complies with European EMC Directive (IEC/EN 61326-1; CISPR 11, Group 1, Class A; AS/NZS CISPR 11; ICES/NMB-001), European Low Voltage Directive, US and Canadian safety regulations.
- Environmental Conditions: Indoor use, installation category II, pollution degree 2. Temperature range: 0°C to 55°C (derated 1% per °C above 40°C). Relative humidity: Up to 95% (non-condensing). Altitude: Up to 2000 meters. Storage temperature: -30°C to 70°C.
- Acoustic Noise: Lp <70 dB(A) at operator position, normal operation.
- Output Terminal Isolation: No output terminal may be more than 240 VDC from any other terminal or chassis ground. For N6781A/N6785A AUX measurement inputs, no terminal may be more than ±60 VDC from any other terminal or chassis ground.
- AC Input: 100-240 VAC; 50/60/400Hz. 86–264 VAC; 47–63Hz; 380–420 Hz. 1440 VA. Power Factor: 0.99 @ nominal input and rated power (drops to 0.76 @ 265 VAC at 400 Hz full load). Internal fuse (not user accessible).
- Net Weight: N6705C with 4 modules: 16 kg / 35 lbs. Single-wide module (typical): 1.23 kg / 2.71 lbs.
Usage Features:
- Color-coded Display and Output Controls: Provides full programming capability for output voltage and current.
- Programmable Voltage and Current: Full programming for all power modules.
- Low Output Noise: <4.5 mV peak-to-peak on Keysight N676xA and N675xA modules.
- Fast Up/Down Programming: ≤1.5 ms response time (10% to 90% of output rating) on Keysight N675xA, N676xA, and N678xA SMU modules.
- Fast Transient Response: Less than 100 µs on Keysight N675xA, N676xA, and N678xA SMU modules.
- Output Autoranging: Available on Keysight N676xA and N675xA modules, supplying maximum rated power over continuous voltage and current ranges.
- Output On/Off Sequencing: Configurable turn-on/turn-off delays for each output.
- Front Panel Binding Posts: + and – output and sense terminals for 4-wire voltage measurements.
- Output Protection: Over-voltage, over-current, and over-temperature protection, with programmable settings.
- Emergency Shut-off: Immediately turns off all outputs and aborts arbitrary waveforms.
- Multiple-Quadrant Operation: Keysight N678xA SMU and N6783A modules offer 2-quadrant (source and sink) operation; N6784A offers 4-quadrant operation.
- Multiple-output/Single-output Meter Display: Switch between a 4-output summary and a 1-output detailed view.
- Scope-like Display: Displays voltage and/or current waveforms with adjustable markers.
- Data Logging Display: Logs average, minimum, and maximum voltage and current over extended periods.
- Measurement Functions: Provides average, minimum, and maximum values for all voltage and current measurements. Output power (Watts) is calculated in single-output meter view.
- Seamless Measurement Autoranging: Available on Keysight N6781A, N6782A, N6785A, and N6786A SMU modules, except for the 10 µA current range (manual selection).
- Microampere Current Measurements: As low as 1 µA in the 10 µA range on Keysight N6761A, N6762A, and N678xA SMU modules.
- Fast Digitizing: 5.12 µs/sample for one parameter; 10.24 µs/sample for two parameters on Keysight N678xA SMU modules.
- Histogram Measurement: Available on Keysight N6781A, N6782A, N6785A, and N6786A SMU modules for current profiling.
- Choice of Three Interfaces: GPIB (IEEE-488), LAN, and USB remote programming interfaces are built-in.
- Built-in Web Server: Allows instrument control from a web browser.
- SCPI Language: Compatible with Standard Commands for Programmable Instruments.
- Savable Instrument Data: File management system for display bitmaps, instrument states, scope results, arbitrary waveforms, and data log results.
- Memory Port: Front USB port for external USB memory devices.
- Trigger Connectors: Rear panel BNC connectors for trigger in/out signals.
- Universal AC Input: Mainframes have universal input voltage capability with active power factor correction.
Maintenance Features:
- Firmware Update Utility: Allows for updating instrument firmware, with optional password protection for restricted access.
- Instrument Sanitize Function: Erases all user data and restores factory-shipped settings, useful for secure area removal.
- Calibration Switches: Internal switches for resetting calibration passwords and inhibiting calibration, accessible by qualified personnel.
- Battery Replacement: Internal battery for the real-time clock, with a life expectancy of seven to ten years under normal use.
- Troubleshooting Guides: Includes preliminary checkout, overall troubleshooting flowcharts, and specific guides for bias board and backplane board issues.
- Replaceable Parts List: Comprehensive list of electrical assemblies, individual parts, and cables for easy identification and ordering.
- Disassembly Procedures: Detailed steps for removing and installing various components like power modules, chassis, boards, and front panel parts, emphasizing ESD precautions.
- Calibration Procedures: Detailed steps for voltage, current, peak current limit, and downprogrammer calibration for various power module models, ensuring accuracy and reliability.
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