Ectron 441A, Instructions Manual, Page: 27 / 74

Ten-volt Alignment
Function
The alignment screens allow the operator to align the
output of the Model 441A with its internal software us-
ing a voltmeter.
From the OPERATE screen
Press and hold the display for more than one second
and then press the display once for negative 10 V align-
ment and twice for positive 10 V alignment.
To the OPERATE screen
From the negative 10 V alignment screen, press the dis-
play twice; from the positive 10 V screen, once.
Default +000
.
Operation
When at the negative 10 V alignment screen, connect
a DMM to the output of the Model 441A and then using
the encoder, adjust the output for
−
10 V
±
0.005 V. Next
press the display once to go to positive 10 V alignment
screen and adjust the encoder for
+
10 V
±
0.005 V. The
three-digit number on each display is a reference number
for the convenience of the user. The user may want to
note the readings once the alignment is made. Then if
an alignment is required in the future and a voltmeter
is unavailable, the user can simply reset the numbers
to those noted above with confidence that the unit is
properly aligned.
There are four additional secondary screens:
MEMORY ERROR
,
RESET
,
ALIGNMENT
REQUIRED
, and a temporary screen seen only after a reset is made.
Figure 3-11
10 V
screen used
to align the out-
put with internal
software
Figure 3-12
The ALIGNMENT
REQUIRED screen will
appear so long as ± 10 V
alignment is necessary.
The displayed digits
are for factory use.
Model 441A Operation
3-11