Teledyne 3020T - Manual (Page 54)

4 Operation Model 3020T
4-18 Teledyne Analytical Instruments
output continue to read the true value of the oxygen concen-
tration regardless of the analog output range.
4.11 The CONTRAST Function
If you cannot read anything on the display after first powering up:
1. Observe LED readout.
a. If LED meter reads all eights and dots, go to step 3.
b. If LED meter displays anything else, go to step 2.
2. Disconnect power to the Analyzer and reconnect again. LED
meter should now read all eights and dots.
4.12 The STANDBY Function
In STANDBY , the analyzer’s internal circuits are powered, but there
are no displays or outputs from the analyzer.
WARNING: THE POWER CABLE MUST BE UNPLUGGED TO
FULLY DISCONNECT POWER FROM THE INSTRU-
MENT. WHEN THE ACCESS DOOR IS OPEN AND
THE POWER CABLE IS CONNECTED, EXTRA
CARE IS REQUIRED TO AVOID CONTACT WITH
LIVE ELECTRICAL CIRCUITS.
CAUTION: If you disconnect the primary power source from
the analyzer, then on re-energizing, you will be
required to choose to keep the configuration you
previously programmed into your instrument in the
Setup Mode, or it will reset to factory defaults.
Use this function whenever you want to power down without loosing
all of the configuration you programmed into your instrument in the Setup
Mode.
Contrast Function is DISABLED
(Refer to Section 1.6)