QuickStart: Keysight U5855A
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Keysight U5855A Page 2
6. MANUAL ADJUST: (Level and Span) To toggle between Auto adjust and Manual adjust press the
Auto/Manual button for 1 second until Manual appears in the lower left corner.
In Manual mode adjust Span by moving the Navigation Button; left to decrease and right to increase.
In Manual mode adjust Level by moving the Navigation Button; Up to raise and Down to lower.
NOTE: While in Manual mode you can also perform a one-time Auto Level and Span adjustment by
momentarily pressing the Auto/Manual button
7. PAUSE IMAGE: Pause or Freeze the image by momentarily pulling the front Trigger.
A menu will be displayed with the options available for the paused image.
To return to a live image without selecting a menu item press the Back Button
8. SAVE IMAGE: To save an image first pause the image as above.
If after review you wish to save the image, use the Navigation Button to move down to the Save option
and press the Enter Button (Navigation Button straight in).
NOTE: You can also save an image without pausing it by pulling and holding the Trigger. (This is not a
good practice)
9. RECAL IMAGE: To recall the last image press the Play Button and pick
from the menu.
If you would like a thumbnail view to select an image: Recall the
last image and when it appears press the Play Button again
to view thumbnails.
1. To delete images (while in thumbnail view) press and hold
the Play Button to add a checkbox by each image. Select
each to be deleted with the Navigation Button, then press the Delete Button.
10. PALETTE: From the default start-up screen press the Navigation Button to view the main Menu. Select
Imaging, then Color Palette.
11. EMISSIVITY: From the default start-up screen press the Navigation Button to view the main Menu. Select
Parameters (“Param”) then select and change Emissivity.
12. REFLECTIVE BACKGROUND TEMPERATURE: From the default start-up screen press the Navigation
Button to view the main Menu. Select Parameters (“Param”) then select and change Reflective.
Model U5855A Fine Resolution mode Off
Model U5855A Fine Resolution mode On
IFOV =3.1 mRad (Theoretical with 160x120 Detector and standard 28˚x21˚lens) Detect 1in. target @ 27.3ft.
IFOV =2.1 mRad (Claimed with 160x120 Detector and standard 28˚x21˚lens) Detect 1in. target @ 39.6.
