Monarch Instrument TACH-4AR - Manual (Page 5)

# " " " TABLE READS FROM THE BOTTOM TO THE TOP
% OPTION OPTION/FUNCTION MENU ITEMS DESCRIPTIONS/RANGES
%
%
Perform Self test " TEST Displays all LCD segments
% !
% View Serial number " SERIAL Displays Serial Number
% !
% ON " OFF " LIGHT Select Back light On/Off
% !
% FIXED " FLOAT " DEC PT Select Fixed or Floating
% ! Decimal Point.
% AUTO " MANUAL " TIMER 0 to 1 hour (.01 sec)
% ! 1 to 100 hours (1 sec)
% COUNT Count from 1 to 999,999
% !
% Set Totalize Scale Factor " TOTAL Totalize from 1 to 999,999
% !
% Set Scale Factor " SCALE Scale from 0.0001 to 99,999
% !
% RPM 5 RPM to 500,000 RPM
% !
Pressing the MENU button starts here “MENU”
MODE DESCRIPTIONS
RPM MODE - Revolutions Per Minute
The RPM mode is used for measuring the speed of rotating objects by
reflecting a beam of light off a piece of reflective tape (T-5). The Tachometer
requires one pulse per revolution. For other than one pulse per revolution,
use the SCALE mode. When turning the unit on, it can be “locked on” by
pressing and holding the RESET /LOCK button, then pressing the POWER/
LOCK button. The unit will indicate the mode, followed by “READY”, and
will then begin taking readings. The LOCK chevron will indicate that
the unit is “locked on”. The TACH-4AR version will automatically
turn on the external sensor if it is plugged in, else the internal optics
will be turned on. It is necessary to aim the light at the reflective tape
(T-5) in order to take readings.
LCD AND PANEL DISPLAY SYMBOLS
& & & & & On Target Indicator - In RPM and Scale modes. The ‘On
Target Indicator’ blinks at a signal input frequency to indicate
that the light is reflected back from the target .
1 “Max” - Indicates a maximum reading in the RPM and Scale
modes. Indicates the first lap time in the Timer mode.
2 “Min” - Indicates the minimum reading in the RPM and Scale
modes. Indicates the second lap time in Timer mode.
3 Indicates the third lap time in Timer mode.
SCALE Indicates the instrument is in scale mode.
LOCK Indicates the unit is “locked on”. The TACH-4A will not shut
off automatically when the lock chevron is displayed.
‘--------’ Indicates the input frequency exceeds the limit of the TACH-4A.
OVFLOW “Overflow” indicates the count has exceeded 999,999.