Operation 
36  Rev. D7 Jul 2017  Marathon MM 
Object Temp.:  The display shows the current temperature of the measured object. 
Ambient Temp.:  The display shows the current internal temperature of the sensor. 
Emissivity:  Changes the emissivity value. The emissivity is a calculated ratio of infrared 
energy emitted by an object to the energy emitted by a blackbody at the same 
temperature (a perfect radiator has an emissivity of 1.00). For information 
on  determining  an  unknown  emissivity  and  for  sample  emissivities,  see 
section 12.2 Typical Emissivity Values, page 84. 
Transmission:  Changes  the  transmission  value  when  using  protective  windows.  For 
example, if a protective window is used with the sensor, set the transmission 
to the appropriate value. 
Focus:  Changes the focus length of the sensor optics. 
Laser/Video:  Switches the laser or the video (if available) on or off. With the setting <TRG> 
the laser can also be switched on/off via the external input. 
Average:  Parameter given in seconds. Once Average is set above 0.0, it automatically 
activates. Note  that  other  hold functions (like  Peak Hold or  Valley  Hold) 
cannot be used concurrently. The default value is 0.0. 
For further information see section 7.3.1 Averaging, page 37. 
Peak Hold:  Parameter  given  in  seconds.  Once  Peak  Hold  is  set  above  0.0,  it 
automatically activates. Note that other hold functions (like Valley Hold or 
Averaging) cannot be used concurrently. The default value is 0.0. 
For further information see section 7.3.2 Peak Hold, page 38. 
Valley Hold:  Parameter  given  in  seconds.  Once  Valley  Hold  is  set  above  0.0,  it 
automatically activates. Note that other hold functions (like Peak Hold or 
Averaging) cannot be used concurrently. The default value is 0.0. 
For further information see section 7.3.4 Valley Hold, page 41. 
Low mA:  Defines the temperature for the low current output value (0 or 4 mA). 
High mA:  Defines the temperature for the high current output value (20 mA). 
Multidrop Addr.:  Defines the address of a sensor in a network. Each sensor in a network must 
have a unique address. “--“ means a standalone unit with address 0. 
Baud Rate:  Defines the baud rate of a sensor. Each sensor in a multidrop network must 
be set to the same baud rate. 
Temp. Unit:  The temperature display can be set to °C , °K or °F. Note that this setting 
influences the RS485 output for both object and ambient temperature. The 
default value is °C. 
Com Mode:  Selects the desired digital communication mode for the sensor, either 2-Wire 
or 4-Wire.