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4.4.1 Using the Clamp-on Ferrites
Clamp-on ferrites are provided with this product for the use of improving its
electromagnetic (EM) immunity in environments of excessive EM interference.
During EMC testing we found that ferrites clamped around the probe cables
and power cord reduced the risk that EM interference affects measurements.
Therefore, we recommend that the clamp-on ferrites provided (Steward P/N
28A2025-0A2) be used on the cables of probes attached to this product, espe
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cially if it the product is used near sources of EM interference such as heavy in
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dustrial equipment.
To attach a ferrite to a probe cable, make a loop in the cable near the connector
and clamp the ferrite around half of the loop as shown in Figure 1. The ferrite
can be easily snapped open and moved to a new probe when needed.
4.5 Connect the Power Source
The 1529 draws power from either a 15-volt DC power supply (the included
AC adapter) connected to the DC input or the internal re-chargeable battery
pack. To use the AC adapter, plug it into a wall outlet of the appropriate voltage
and insert the DC plug into the DC power input of the 1529 (see Figure 3 on
page 18.)
4.6 Switch the Power On
Power is turned on and off with the power switch located on the top right cor
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ner of the back panel. To switch the power on, toggle the power switch to the
‘ON’ position. To switch power off, toggle the power switch to the ‘OFF’ posi
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tion. The instrument takes a few seconds to power up, initialize, and begin nor
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mal operation. A self-test is performed displaying the channel configuration
and status of the system, calibration, GPIB, memory, and buttons. If the ther
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mometer readout calibration has expired, the user is notified and must press the
1529 Chub-E4 Thermometer Readout
User’s Guide
14
clamp-on ferrite
probe cable
Figure 1 Using the Clamp-on Ferrites