YSI Model 52, Operation Manual

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Introduction Section 1
YSI, Incorporated Model 52 2
1.2 DISPLAY AND FUNCTION KEYS
A rotary function switch and four keys provide complete control of the Model 52. The
four keys are SKIP,
!
,
"
, and CONFIRM.
!
! !
!
and
"
are used to modify a setting
either up or down (for example, calibration or salinity values can be modified for each
calibration process if required). The CONFIRM key is used to accept your setting.
The display often asks questions such as “Calibrate in percent?” Use CONFIRM to
answer yes. Use SKIP to go on to the next choice. The SKIP key can also be used to
select among several default values.
1.3 FUNCTION SWITCH
The rotary function switch allows easy selection among the meter’s basic functions. In
O
2
-TEMP, the instrument is measuring dissolved oxygen and temperature. To begin
calibrating, switch to CALIBRATE. To begin setting the clock, communication, and
auto-stable parameters, switch to SYSTEM SETUP. EXTERNAL CONTROL activates
the RS232 port. Salinity can be set after switching to SALINITY.
1.4 POWER ON SELF-TEST
A Power On Self-Test (POST) takes place whenever the meter is turned on. This ensures
correct performance. If anything is wrong, the operator is signaled and the error
identified. An error message will appear on the display. For more information see Section
8.2, Power On Self-Testing and Error Display Messages.