Prostat PRS-801, User Manual

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29
Rev. C / January 2012
PRS-812 Resistance Meter
c. Press
TEST
to restart the Test Cycle
d. Repeat the
RESET
, Resistance Range adjustment and TEST sequence until a stable measure-
ment is displayed
8. If the resistance is lower than the selected decade,
UL
(Under Level) will be displayed. To move
the selected resistance range down to a lower decade:
a. Press
RESET
once to stop the Test Cycle. This does not add
UL
to Memory.
b. Press MANUAL RESISTANCE RANGE SELECTION down arrow (
↓
) to select the desired de-
cade; the appropriate LED will illuminate indicating the current selection
c. Press
TEST
to restart the Test Cycle
d. Repeat the
RESET
, Resistance Range adjustment and
TEST
sequence until a stable measure-
ment is displayed
K. Resistance Measurements in the
AUTOMATIC/MANUA
L MODE of OPERATION
To select
AUTOMATIC/MANUAL
in either Exponential (Mode 5) or Ohms (Mode 6) Display, use the
FUNCTION MODE
button to toggle through choices.
AUTOMATIC/MANUAL
is used for a variety of
applications where one desires to reduce Measurement Test Cycle time by overriding Automatic
reset-to-minimum functions. It is intended for applications where:
→ Multiple Measurements where magnitude is expected within a range of two or three de
cades, and test voltage must vary with actual resistance measurements.
→ When
AUTOMATIC
electrification period and Test Voltage control must be maintained to
current industry (and Automatic Mode) settings
This mode prevents the PRS-812 from resetting the Test Voltage and Resistance Range to Mini-
mum at the beginning of each Measurement Test Cycle. In this mode, measurements start at the
resistance range selected by the operator, and its commensurate Test Voltage, or the value of the
last measurement Otherwise, it is used similar to the
AUTOMATIC
Mode.
The following summarizes
AUTOMATIC/MANUAL
Mode Operations and assumes that test leads
are properly connected.
1. Slide Battery Buss Cut Off switch to
ON
position
2. Press Red
ON/OFF
button once to power up the instrument.
3. Select
AUTOMATIC/MANUAL MODE
by pressing the
MODE
select button until
AUTO
and
MANUAL
appear in the LCD display.
a. Pressing the
MODE
button four (4) times selects
AUTOMATIC/MANUAL
Exponential dis-
play (1.0EXX).
b. Pressing the
MODE
button five (5) times selects
AUTOMATIC/MANUAL
display in Ohms.
4. Set RESISTANCE RANGE SELECTION using the UP (
↑
) and DOWN (
↓
) arrow keys.