6 General Operation
This sectionexplains basic operation of the 1529 thermometer readout. De-
tailedoperation of the 1529 is explained in Sections 7 and 8. Section 7 explains
the menu structureand the functions available in the menu structure and Sec-
tion 8 explainsthe communications interface for operating the 1529 remotely.

6.1 Display

The 1529 displayconsists of two parts. The top portion of the display is used
for displayingthe measurements from one to four inputs. The bottom portion of
the displayis reserved for the programmable fields and field display sets. Infor-
mation aboutthe channels and measurements can be displayed in greater detail
such as min, max, spread, standarddeviation, and many other functions. When
the measure period is 0.1 or 0.2 seconds (fast measurementmode), the pro-
grammablefields and field display set information are not displayed.

6.2 Changing Units

The 1529 thermometer readout iscapable of displaying temperature in Celsius
(C), Fahrenheit(F), or Kelvin (K). (Displaying in units of Ω,KΩ,ormVisalso
availablethrough the PROBE menu and is channel specific.) Temperature units
are changed on allchannels (not individually) by pressing the buttons on the
front panel when not in the menu structure. Press the Unit,LR, buttonsto
scrollforward and backward through C, F, or K. All channels or fields that are
displayingtemperature on the upper or lower display are updated to the new
units.
Channels that are set to Ω,KΩ,or mV in the PROBEmenu are left unchanged
when temperature units are modified. Changing the units resets the statistical
calculations (displayed in the bottom portion of the display).

6.3 Battery

The 1529 thermometer readout has a built-in nickel-metal-hydridebattery pack
thatcan powerthe instrument for about eight hours before needing to be re-
charged.The battery discharges more quickly when the display backlight is
used. The percentof battery charge remaining is displayed on the bottom por-
tion of thedisplay when the battery power is being used. The battery percent-
age is approximateand should only be used as a general guideline when
determiningthe length of charge remaining. The battery is recharged in situ
(while in place) using the ACadapter that is provided.
Plug the ACadapter in to the wallo utlet and connect the DC plug of the adapter
into the 1529. Theb attery ischarged as necessary whether or not the instru-
ment is switchedon. The powercontrol circuit inside the instrument manages
battery charging and stops charging the battery automatically when the battery
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6 General Operation
Display