The TD1545 is a high-performance multifunctional calibration instrument designed specifically for verifying and calibrating DC electrical measuring equipment. It integrates multiple precision sources including a DC voltage standard source, DC current standard source, micro DC voltage source, and DC virtual power output module making it a complete testing solution. The TD1545 supports verification of a wide range of DC metering devices such as DC voltmeters, ammeters, power meters, DC shunts, and direct/indirect DC energy meters. With exceptional stability and precision output performance, it is ideal for laboratory calibration, metering verification, quality inspection, and high-accuracy research applications. Key Features All-in-one DC calibration platform with multi-function output modes Ultra-high accuracy performance suitable for laboratory-grade calibration Supports DC voltage, DC current, micro-voltage, and simulated power output Wide output range up to 1500 V with exceptionally low ripple Capable of verifying DC shunts and both direct & indirect DC energy meters High output stability for continuous long-duration calibration work High reliability design for metrology centers and industrial calibration labs DC Voltage Output Specifications Range Resolution Short Term Stability (%/min) Accuracy (k=2) (ppm of reading + ppm of range) Maximum Burden Current (mA) Ripple (%) 100 mV 1 V 0.005 Class 0.05: 120 + 80 Class 0.02: 60 + 5 V 200 < 1.0 300 mV 0.1 V 0.005 Class 0.05: 120 + 80 Class 0.02: 60 + 40 200 < 1.0 1 V 1 V 0.005 Class 0.05: 120 + 80 Class 0.02: 60 + 40 200 < 1.0 3 V 1 V 0.005 Class 0.05: 120 + 80 Class 0.02: 60 + 40 200 < 1.0 10 V 10 V 0.005 Class 0.05: 120 + 80 Class 0.02: 60 + 40 200 < 1.0 30 V 10 V 0.005 Class 0.05: 120 + 80 Class 0.02: 60 + 40 200 < 1.0 100 V 0.1 mV 0.005 Class 0.05: 120 + 80 Class 0.02: 60 + 40 200 < 1.0 300 V 0.1 mV 0.005 Class 0.05: 120 + 80 Class 0.02: 60 + 40 60 < 1.0 600 V 0.1 mV 0.005 Class 0.05: 120 + 80 Class 0.02: 60 + 40 30 < 1.0 1000 V 1 mV 0.005 Class 0.05: 120 + 80 Class 0.02: 60 + 40 15 < 1.0 1500 V 1 mV 0.005 Class 0.05: 120 + 80 Class 0.02: 60 + 40 10 < 1.0