pico Technology TA167 User Manual page 2

OPERATING INSTRUCTIONS
Switch On
When the probe is switched on to the required measuring
range, the green LED will illuminate. The LED starts flashing
when the battery voltage is too low for normal operation and
warns the user that it requires changing. This procedure is
described below.
Auto Zero
The output zero offset voltage of the probe may change due to
thermal shifts and other environmental conditions. Select the
required measuring range and to null the output voltage
depress the Auto Zero button. Ensure that the probe is away
from the current carrying conductor whilst the probe is being
nulled.
Current Measurement
1. Switch on the probe by selecting the required measuring
range and check that the green LED is lit.
2. Connect the output lead to the oscilloscope,
3. Zero the probe using the Auto Zero button.
4. Clamp the jaws of the probe round the conductor ensuring
a good contact between the closing faces of the jaws.
5. Observe and take measurements as required.
output indicates that the current flow is in the direction
shown by the arrow on the probe.
Auto Power OFF
In order to save battery life, the probe will automatically switch
itself off after approximately 10 minutes. To disable the Auto
power off function, Switch Off the probe and Switch On whilst
pressing the auto zero button. The red LED will illuminate and
the probe will stay ON until switched off again.
Battery Replacement
The green or red LED will flash when the minimum operating
voltage is approached. Refer to Fig 1.
procedure:
SAFETY WARNING
Before removing the battery cover,
ensure that the probe is disconnected from the
oscilloscope and remote
from any live electrical circuit.
Unclamp the probe from the conductor, turn it off using the On -
Off switch and disconnect the output leads, from external
equipment.
Loosen the captive screw which secures the battery cover. Lift
the cover through 30° and pull it clear of the probe body as
shown in Fig 1. Replace the battery and re-fit the battery cover
and fasten the screw.
Fit only Type 9 V PP3 Alkaline (MN 1604).
SAFETY STANDARDS
EN 61010-1:2001
EN 61010-2-032:2002
EN 61010-031:2002
300V Cat III, Pollution Degree 2
EMC Standards
EN 61326-2-2:2006
ROHS and WEEE compliant
This product is designed to be safe under the following
conditions:
- indoor use
Positive
- altitude up to 2000 m
- temperature 0°C to +50°C
- maximum relative humidity 80% for temperatures up to
31°C decreasing linearly to 40% relative humidity at 50°C.
Use of the probe on uninsulated conductors is limited to
300 V AC
RMS
Safety in its use is the responsibility of the operator who must
be a suitably qualified or authorised person. Ensure that your
fingers are behind the protective barrier see Fig 1 when using
the probe.
before use.
Use the following
To avoid electric shock, keep the probe clean and free of
surface contamination.
Use a cloth moistened with Isopropyl alcohol to clean the
probe, ensure the probe is completely dry before using.
or DC. and frequencies below 1 kHz.
Always inspect the probe and lead for damage
WARRANTY
Your current probe is guaranteed for one year from the date of
purchase against defective material or workmanship.
probe fails during the warranty period, we shall at our
discretion, repair or replace it with a new or reconditioned unit
provided we are satisfied that the failure is due to defective
material or workmanship. To make a claim under warranty, the
probe should be returned to us, postage prepaid, with a
description of the defect. The use of a battery, other than that
specified invalidates this warranty.
Goods alleged by the buyer to be defective shall not form the
subject of any claim for injury, loss, damage, or any expense
howsoever incurred, whether arising directly or indirectly from
such alleged defects other than death or personal injury
resulting from the seller's negligence.
No condition is made or to be implied, nor is any warranty given
or to be implied as to the life or wear of goods supplied or that
they will be suitable for any particular purpose or for use under
specific conditions, notwithstanding that such purpose or
conditions may be made known to the seller.
Pico Technology Limited
James House
Colmworth Business Park
St Neots
Cambridgeshire
PE19 8YP
United Kingdom
Tel: +44 (0) 1480 396395
Fax: +44 (0) 1480 396296
Technical Support: support@picotech.com
If the