Advantest R6144 Programmable DC Voltage/Current Source (Calibration Source) Calibration and Maintenance

Advantest R6144 Programmable DC Voltage/Current Source (Calibration Source) Calibration and Maintenance

Programmable DC voltage/current generators are indispensable excitation sources in precision instrument evaluation, temperature controller calibration, and automated testing systems. Advantest R6144 is a classic high-precision and high stability DC voltage/current generator, suitable for evaluating precision circuits and components, as well as calibrating temperature controllers. It adopts a time-sharing D/A conversion circuit, which has excellent linearity and stability, while reducing setup time and output noise, which helps to build high-throughput measurement systems. The standard GPIB and BCD parallel interfaces enable easy connection with personal computers, sequencers, or general-purpose I/O interfaces. For engineers who are using outdated calibration sources, need to replace discontinued equipment, or troubleshoot, understanding the specifications, interfaces, applications, and maintenance points of R6144 can significantly improve testing efficiency and equipment reliability.

Product positioning and core advantages

Advantest R6144 is a programmable DC voltage/current generator primarily designed for calibration and evaluation scenarios that require high precision, low noise, and fast setup. Its voltage output range can reach 32 V, current output range can reach 160 mA, and the resolution can be set up to 1 μ V and 100 nA. Under the conditions of 23 ° C ± 5 ° C, relative humidity below 70%, and constant power and load, the voltage accuracy is guaranteed to be 0.03%, the current accuracy is guaranteed to be 0.035%, and the warranty period is 6 months. The typical output noise value is 3 mVp-p, which is only one-fifth of the previous generation model; The typical establishment time is 50 ms, which is only one-third of the previous generation model. These features make it highly suitable for use in high-precision measurement systems, automated calibration tables, and production line testing equipment.

R6144 has a built-in 160 step memory and supports full digital continuous variable scanning function, which can cover a wider range of measurement applications. More importantly, the program written for the previous generation model TR6142 can run on R6144 without modification, providing great convenience for device upgrades and replacements. For users who still rely on the TR6142 program, R6144 is a smooth upgrade path.

Voltage and current output specifications

The voltage output of R6144 is divided into multiple ranges: 10 mV, 100 mV, 1 V, 10 V, and 30 V (R6144 only). Each range has a corresponding setting resolution: 10 mV range is 1 μ V, 100 mV range is 10 μ V, 1 V range is 100 μ V, 10 V range is 1 mV, and 30 V range is 2 mV. The current output is divided into three ranges: 1 mA, 10 mA, and 100 mA, with resolutions of 100 nA, 1 μ A, and 10 μ A, respectively. This multi range design enables R6144 to output small signals at the microvolt level and provide large driving currents to meet different load requirements.

In terms of accuracy, the generation accuracy of voltage range is "0.03%+range error", for example, the 10 mV range is 0.03%+5 μ V, the 100 mV range is 0.03%+25 μ V, the 1 V range is 0.03%+200 μ V, the 10 V range is 0.03%+2 mV, and the 30 V range is 0.03%+4 mV. The accuracy of current range is: 1 mA range 0.035%+300 nA, 10 mA range 0.035%+3 μ A, 100 mA range 0.04%+30 μ A. These indicators are guaranteed under the conditions of 23 ° C ± 5 ° C, relative humidity below 70%, constant power supply and load, with a warranty period of 6 months.

In terms of stability, the generated stability within one day is "0.01%+range error", for example, a 10 mV range is 0.01%+4 μ V, a 100 mV range is 0.01%+10 μ V, a 1 V range is 0.01%+50 μ V, a 10 V range is 0.01%+200 μ V, and a 30 V range is 0.01%+300 μ V; The current range is 0.01%+20 nA (1 mA), 0.01%+200 nA (10 mA), and 0.01%+2 μ A (100 mA). In terms of temperature coefficient, the voltage range varies by 20 ppm/° C plus range error/° C for every 1 ° C within the range of 0 ° C to+50 ° C. The 30 V range is 60 ppm/° C plus 4 μ V/° C; the current range is 20 ppm/° C plus 4 nA/° C (1 mA), 40 nA/° C (10 mA), 400 nA/° C (100 mA). These indicators indicate that R6144 can still maintain good output stability under changes in environmental temperature.

Load capacity, noise, and setup time

The maximum load and output resistance of R6144 vary depending on the range. For the 1 V, 10 V, and 30 V ranges, a 4-wire resistor connection is used; Other ranges are connected using 2-wire resistors. The maximum load current for a 10 mV range is 0.8 μ A (R6144), a 100 mV range is 8 μ A, a 1 V range can source 160 mA, a 10 V range can source 120 mA (R6142) or 160 mA (R6144), and a 30 V range can draw in 100 mA. In terms of output resistance, the 10 mV and 100 mV ranges are approximately 2 Ω, the 1 V range is 0.4 m Ω, the 10 V range is 4 m Ω, and the 30 V range is 8 m Ω. The output resistances for current ranges are 100 M Ω (1 mA), 10 M Ω (10 mA), and 1 M Ω (100 mA), respectively. These data help engineers determine whether R6144 is suitable for driving specific loads.