The heart of the Fluke 7000 Series is the fully isolated, compact 7000 solid state 10V and 1.018V direct Voltage standard. Designed to be robust and portable, its internal batteries support ‘hot shipment and plug-in’. However, should complete power be lost at any time, patented Reference Conditioning technology over-comes reference device hysteresis and restores the last powered value to the module. The 7000 modules also feature patented DC-DC convertor technology, which achieves unparalleled isolation from the external AC-DC Line power adaptor. This makes the 7000 series particularly well suited to Josephson Junction direct comparison Self Contained 10-Volt DC Voltage Reference Reference Module Interchangeable with Nanoscan and Transref System 10-Volt and 1.018-Volt Outputs Low-Cost Entry Point into 10-Volt Metrology Suitable for Unpowered Shipment 10V Output Stability 90 days (±ppm): 0.9 1 Year (±ppm): 1.8 Predictability ±0.5ppm/year typical After 5 points, 3 mo. apart Temperature Coefficient (15 - 35°C) < 0.05 ppm Noise (rms) 0.01 to 10Hz: < 0.10 ppm RMS Standard deviation of 90 day regression: < 0.10 ppm RMS Hysteresis recovery < 0.1 ppm (after conditioning cycle and battery discharge) Output Current 12 mA Output Resistance < 10 mOhm Battery Type NiMH Backup Period 16 hrs from fully charged Recharge time (typical) 2 hours Half Life 5 yrs Environment Temperature Operating: +15°C to 35°C Transit: -18°C to 45°C Warm-up period: 10 min. to ±0.1ppm of final output value General Specifications Power < 1W 12V DC Connection Yes Dimensions Dimensions (H x W x D) 137 x 85 x 290 mm (3.5 x 2.1 x 11.4 inch) Weight 2.1kg (4.5Ibs) Safety UL3111, CE marked EN61010-1-1:1993/A2:1995 CETL