Fluke (Calibration) 732C Voltage Reference Standards

Performance

Output voltages

10 V, 1 V, and 0.1 V are provided at separate binding posts referenced to the VCOM binding post.

Stability

Standard stability

Output voltage

Stability (± μV/V)

30 days 90 days 1 Year

10 V 0.3 0.8 2.0

1 V 0.6 1.2 3.0

0.1 V 1.2 2.9 9.8

Select stability

Output voltage

Stability (± μV/V)

30 days 90 days 1 Year

10 V 0.3 0.8 1.0

1 V 0.6 1.2 2.5

0.1 V 1.2 2.9 8.0

Noise at the output terminals

Output noise is specified for both day-to-day observations and for short-term observations, at k=1.

Output voltage S1 (± μV/V)1 Sra (± μV/V)2 Noise (± μV/V rms)

10 V 0.07 0.05 0.06

1 V 0.16 0.14 0.15

0.1 V 1.4 1.3 1.0

Output current and impedance

Output voltage Output current limit Output impedance

10 V 12 mA1 ≤1 mΩ

1 V 1.2 mA1 ≤1 mΩ

100 mV 20 pA ≤100 Ω

Temperature Coefficient (TC) of Output

From 15 °C to 35 °C, the temperature coefficient is bound by the information in the table below.

Output voltage Temperature Coefficient (± μV/V per °C)

10 V 0.04

1 V 0.1

0.1 V 0.2

Output change with altitude

Output voltage Output Change (± μV/V per 1000 ft)

10 V 0.05

1 V 0.09

0.1 V 0.18

Load regulation

10 V output load change Maximum 10 V output change (± μV/V)

0 mA to 12 mA (no load to full load) 1

0 mA to 2 mA 0.1

Line Regulation

The outputs will change no more than 0.05 μV/V for any 10% line voltage change or for the entire operating range

of the battery.

General

Mains Line voltage is accepted as shown in the table below. AC line current at 120 V ac is

typically 0.13 A.

732C line voltage setting Line voltage accepted Frequency accepted

100 V 90 V to 110 V 50 Hz/60 Hz

120 V 108 V to 132 V 50 Hz/60 Hz

220 V 198 V to 242 V 50 Hz/60 Hz

240 V 216 V to 264 V 50 Hz/60 Hz

Battery Battery operation: At full charge, the internal battery operates the Product for a

minimum of 72 hours at 23 ±5 °C, with 0 mA to 0.1 mA total

current drain at the outputs.

Charging time: <36 hours with self-contained automatic battery charger

External dc input Rear-panel input for external 12 V dc to 15 V dc powers the Product indefinitely.

The dc source must be rated ≥300 mA

Isolation Resistance from any of the Product binding posts to earth (chassis) ground or to ac line

power is >10 000 MΩ shunted by <1000 pF

Guard and ground

terminals

Chassis ground connections are provided on both the front and rear panels. Access to

the internal guard is provided by a front-panel binding post

Output protection All outputs can be shorted indefinitely without damage to the Product. The 10 V output

can withstand voltages from other sources as follows:

1. For voltages ≤220 V dc, the Product is protected for a maximum of 50 mA continuous

current

2. For voltage ≤1100 V dc, the Product is protected for a maximum of 25 mA continuous

current or up to 0.6 joules for short periods of time

Environmental

Specified operation Temperature range: 15 °C to 35 °C

Relative humidity: 0% to 90 % to 28 °C, to 80% to 35 °C, and to 50% to 50 °C,

Noncondensing

Altitude: 0 m to 1830 m (0 ft to 6000 ft)

Non-specified operation Temperature range: 0 °C to 50 °C

Relative humidity: 0% to 90 % noncondensing

Altitude: 0 m to 3050 m (0 ft to 10 000 ft)º

Storage (battery removed) Temperature Range: -40 °C to 50 °C

Relative humidity: noncondensing

Altitude: 0 m to 12 200 m (0 ft to 40 000 ft)