Time Electronics 1006 Manuel utilisateur

User Manual

1006 DC Millivolt Source

and

1007 DC Millivolt Potentiometer/Source

Version 1.2

9-22

Time Electronics Ltd

Unit 5, TON Business Park, 2-8 Morley Road,

Tonbridge, Kent, TN9 1RA, United Kingdom.

T: +44 (0) 1732 355993 | F: +44 (0) 1732 350198

mail@timeelectronics.co.uk | www.timeelectronics.com

Nothing from this manual may be multiplied, or made public in any form or manner, either

electronically or hard copy, without prior written consent from Time Electronics Ltd.

This also applies to any schematics, drawings and diagrams contained herein.

This manual provides operating and safety instructions for the Time Electronics product.

To ensure correct operation and safety, please follow the instructions in this manual.

Time Electronics reserves the right to change the contents, specifications and other

information contained in this manual without notice.

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Contents

1Introduction....................................................................................................................................4

1.1 1006 DC Millivolt Source .......................................................................................................................4

1.2 1007 DC Millivolt Potentiometer and Source ......................................................................................... 5

1.3 Specifications ........................................................................................................................................6

2Controls..........................................................................................................................................7

2.1 1006 Controls ........................................................................................................................................7

2.2 1007 Controls ........................................................................................................................................8

3Operating Instructions ..................................................................................................................9

3.1 Battery Insertion .................................................................................................................................... 9

3.2 1006/1007 mV Source Operation ..........................................................................................................9

3.3 1007 mV Potentiometric Null Operation ..............................................................................................10

4Servicing and Calibration ...........................................................................................................11

4.1 Internal Preset Controls.......................................................................................................................11

4.2 Calibration and Adjustment.................................................................................................................. 11

5Warranty and Servicing............................................................................................................... 14

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1Introduction

1.1 1006 DC Millivolt Source

Features

•3 ranges:

0 to 999.9mV (0.1 mV steps)

0 to 99.99mV (10 µV steps)

0 to 9.999mV (1 µV steps)

•Accuracy 0.02 %

•20 mA output current

•Short circuit and overload protected

•Safety terminals

•Removable protective cover

•Powered by 6 x AA batteries

•100 hours typical battery life

•Optional carry case

Description

The 1006 is an accurate millivolt source suitable for voltage injection applications.

Three output ranges are provided to give adjustable output values from 1 µV to 1 V with a

basic 0.02 % accuracy. For signal injection, the operator needs to switch on, check the

battery condition, select the range, and set the required voltage using the thumbwheel

switches. The 1006 uses a precision bandgap reference device, with low temperature

coefficient resistors to give a highly stable output.

Power is provided by 6 AA batteries. Battery life is several months, depending on usage.

The battery condition is monitored by an indicator situated on the top of the unit.

The 1006 has up to 20 mA drive current and is short circuit and overload protected.

An off/normal/reverse output polarity switch is provided.

Connection is via safety terminals that are compatible with 4 mm shrouded plugs, as well as

standard plugs, bare wires, and spade terminals.

The unit comes fitted with an ergonomic rubber cover providing increased protection and

durability. It has a textured grip for comfortable handling and top/bottom openings to place

labels. It is easy to remove if the user prefers a stand-alone unit or to house the instrument

in the optional carry case.

The unit is simple to operate and does not require standardisation or calibration prior to use.

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1.2 1007 DC Millivolt Potentiometer and Source

Features

•3 ranges:

0 to 999.9mV (0.1 mV steps)

0 to 99.99mV (10 µV steps)

0 to 9.999mV (1 µV steps)

•Accuracy 0.02 %

•1 µV resolution null

•20 mA output current

•Short circuit and overload protected

•Safety terminals

•Removable protective cover

•Powered by 6 x AA batteries

•100 hours typical battery life

•Optional carry case

Description

The 1007 includes all the features of the 1006 with the addition of a microvolt null balance

display. This enables it to be used for potentiometric voltage measurement in addition to its

function as a calibrator. The null zero and sensitivity are adjustable via front panel controls -

maximum sensitivity enables null balance to resolve 1 µV.

Applications are essentially those of conventional potentiometers with the following

significant advantages:

•No standardisation is required.

•20 mA output current.

•Output remains stable without re-adjustment.

•Electronic null with microvolt sensitivity.

Connection is via safety terminals that are compatible with 4 mm shrouded plugs, as well as

standard plugs, bare wires, and spade terminals.

The unit comes fitted with an ergonomic rubber cover providing increased protection and

durability. It has a textured grip for comfortable handling and top/bottom openings to place

labels. It is easy to remove if the user prefers a stand-alone unit or to house the instrument

in the optional carry case.

The 1007 is simple to operate and does not require standardisation or calibration before

use. It is only necessary to zero the null amplifier prior to making a measurement.

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1.3 Specifications

Output: 0 to 999.9 mV in 3 ranges:

0 to 999.9 mV in 0.1 mV steps

0 to 99.99 mV in 10 μV steps

0 to 9.999 mV in 1 μV steps

Accuracy: ± (0.02 % of setting + 0.02 % of range + 1 μV)

Output Resistance: Less than 0.2 Ω on 1 V and 100 mV ranges. 1 Ω on 10 mV range.

Maximum Output Current: 999.9mV and 99.99mV ranges: 20 mA.

9.999mV range: Up to short circuit value although it should be

noted that loads of less than 1 kΩwill give greater than 0.1 % error.

Output Voltage Stability: Less than 60 ppm/°C.

Less than 100 ppm per 3 month. (non cumulative)

Operating Temperature: -10 °C to + 60 °C.

Output Polarity: Positive or negative switch selected. A centre ‘off’ position is also provided.

Output Noise Level: Less than 30 ppm of full scale.

Reference Source: A precision bandgap reference diode is used to provide stability with

a low temperature coefficient.

Maximum Overload: The instrument can withstand continuous short circuit on the output

for all ranges.

Power Supply: 6 AA batteries. A battery condition monitor indicates when the

batteries should be replaced. An alternative power source is 6 NiMH

cells of the same dimensions - these can be recharged via the charge

socket located on the top of the unit. The 6 rechargeable batteries

and mains re-charger unit are available as an optional extra.

Null Balance Display: The null function is displayed on a front panel twin coloured LED bar

(1007 only) graph, zero and sensitivity controls are provided.

•Maximum sensitivity: ± 20 µV fsd

•Minimum sensitivity: ± 200 mV fsd

•Input resistance: Greater than 1 MΩat balance.

Dimensions: 200 x 75 x 110 mm (215 x 100 x 120 mm incl. protective cover).

Weight: 0.75 kg (1.2 kg incl. protective cover).

Options: 9027 carry case (user must remove protective cover).

9529 rechargeable battery pack (6 cells and mains charger).

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2Controls

2.1 1006 Controls

Case Terminal

Power

On/Off button.

Output Terminals

Output Polarity Switch

Set output polarity.

Centre position provides a

short circuit on the 1006

output terminals.

Output Voltage Setting

Selected on a 4-digit

thumbwheel switch.

Output Voltage Range

3 selectable buttons.

Battery Level Indicator

Green: Ready for use

Red: Change or re-charge batteries.

Re-charge Socket

For option 9529 charger + cells.

Battery Compartment

6 x AA batteries.

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2.2 1007 Controls

The 1007 incorporates a 1006 with the addition of a microvolt null detector and enables the

unit to be used for potentiometric measurements. The additional components are highlighted

with green boxes below.

Case Terminal

Power

On/Off button.

Output Terminals

Output Polarity Switch

Set output polarity.

Centre position provides an

open circuit on the 1007

output terminals.

Output Voltage Setting

Selected on a 4-digit

thumbwheel switch.

Output Voltage Range

3 selectable buttons.

Battery Level Indicator

Green: Ready for use

Red: Change or re-charge batteries.

Re-charge Socket

For option 9529 charger + cells.

Battery Compartment

6 x AA batteries.

Null Sensitivity Dial

Zero Control Dial

Null Balance Display

Red/Green segment LED

display.

Function Switch

Set to Source,

Potentiometer or Zero.

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3Operating Instructions

3.1 Battery Insertion

To insert batteries, remove two black covers on top of the

instrument by pressing in and turning 90° anti-clockwise.

Three size AA batteries should be inserted in each tube with

the positive (tip) terminal upmost.

Note that if the optional battery charger is to be used, then

nickel metal hydride (NiMH) rechargeable batteries must be

used in the instrument.

3.2 1006/1007 mV Source Operation

To operate both models as a mV source, follow the steps below:

1. Power on the unit.

2. Check the battery level indicator on the top of the unit:

Green: Ready for use.

Red: Change or recharge batteries.

3. Select required range with push button.

On the 1007 select “source” on the function switch.

4. Dial required output voltage.

5. The output voltage polarity can be selected on the

front panel switch

POLARITY SWITCH NOTE:

On the 1006, the “off” polarity position disconnects the output & provides a short circuit on the output terminals.

On the 1007, the “off” polarity position provides an open circuit on the output terminals. This is to prevent

accidental shorting of the voltage under test when the unit is being used as a potentiometer. It is desirable to

keep the Null “SENSITIVITY” control set to minimum (fully anti-clockwise) when the 1007 is used as a source.

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3.3 1007 mV Potentiometric Null Operation

Due to the extreme sensitivity of the electronic null detector (3 µV/div.) it is important to

ensure that it is correctly zeroed before attempting accurate measurements.

3.3.1 Zero Setting Procedure

1. Set function switch to “Zero”.

2. Select the range consistent with the voltage to be

measured.

3. Set Sensitivity dial to maximum (fully clockwise).

4. Adjust Zero control dial for zero reading on null

display (green segment lit).

3.3.2 Measuring Procedure

1. Set function switch to Potentiometer.

2. Set Output Polarity switch to “Norm”.

3. Set the Sensitivity dial to minimum (fully counter

clockwise).

4. Connect unknown voltage (999.9 mV max) to output

terminals (in the same polarity).

5. Adjust range, output digits, and sensitivity for a null

balance as required.

6. Read off unknown applied voltage from rotary

thumbwheel digit switches.

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