The Contrast Function; The Standby Function - Teledyne 3020M Operating Instructions Manual

Percent Paramagnetic Oxygen Analyzer
ESCAPE to re-enter the ANALYZE screen using the fixed range.
Note: When performing analysis on a fixed range, if the oxygen
concentration rises above the upper limit, as established by
the setup, for that particular range, the output saturates at 1
V dc (20 mA at optional mA dc output). However, the digital
readout and the RS-232 output continue to read the true value
of the oxygen concentration regardless of the analog output
range.

4.12 The CONTRAST Function

If you cannot read anything on the display after first powering up:
1. Observe LED readout.
2. Disconnect power to the Analyzer and reconnect again. LED

4.13 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
CAUTION: If you disconnect the primary power source from
L—5.00 M—25.00
H—100.00 Mode—FX/HI
Contrast Function is DISABLED
(Refer to Section 1.6)
a. If LED meter reads all eights and dots, go to step 3.
b. If LED meter displays anything else, go to step 2.
meter should now read all eights and dots.
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.
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.
Teledyne Analytical Instruments
Operation 4
4-17