Ideal ND2385 User Manual
MIN/MAX
~Hz PEAK
HOLD
Data Acquisition
2
2
#61-492
490 Series
Industrial Grade Multimeter
1. LCD Display
2. Rotary Function Switch
3. COM Input Terminal
4. VΩHz Input Terminal
5. mA Input Terminal
6. A Input Terminal
7. Backlight Button
8. ~Hz Button
9. Peak H Button
10.Range Button
11.Blue Switch Button
12.Min/Max Button
13.REL∆ Button
14.Hold Button
1
10
14
7
2
3
4
5
6
11
12
13
8
9
~Hz PEAK
MIN/MAX
Data Acquisition
HOLD
2
4
Function Buttons
The meter beeps once for every valid key-press, and beeps
twice for every invalid key-press.
Backlight Button
• The light button is used to turn the backlight on or off.
~ Hz Button
• Pressing the ~Hz button in AC voltage or current mode
enters frequency counter mode with automatic range
selection.
• Pressing range switch in VAHz mode also changes the full
scale range of the original voltage or current mode after
VAHz mode is cancelled.
Peak Hold Button
• The peak hold button toggles the peak hold function on or
off.
• The precision of peak hold measurement can be enhanced
by calibration.
• Peak hold can be calibrated by pressing the peak hold button for > 2 seconds. “caL will be shown on the main display.
• Press the peak hold button to toggle between PMAX and
PMIN.
• Press peak hold for > 2 seconds to escape the peak hold
measurement.
Range Button
• Pressing the range button changes the unit to manual
ranging and toggles between the ranges of the measurement function.
• Pressing the range button for > 2 seconds returns the unit
to auto ranging.
Blue Button
• The blue button toggles between the black and blue functions on the dial.
3
WARNING!
1. DO NOT UNDER ANY CIRCUMSTANCES EXCEED THESE
RATINGS:
- Voltage is not to exceed 1000 Volts.
- Resistance, Capacitance, Logic and Continuity functions are not to be performed on circuits capable of delivering greater than 600 Volts.
- Current measurements are not to be performed on circuits capable of delivering greater than 500 Volts
2. To avoid electrical shock hazards and/or damage to the
meter:
- Do not exceed the voltage ratings for the meter. Use
caution when measuring voltage.
- Do not use during electrical storms. AC power sources
with inductive loads or electrical storms may result in high
voltage. High energy transients can damage meter and
present a dangerous shock hazard.
- Turn off power to the circuit or device being measured
before taking resistance and capacitance measurements.
Fully discharge all capacitors before measuring.
3. Ensure meter is in proper working order before using.
Visually inspect meter for damage. Performing a continuity check can verify proper operation. If the meter reading
goes from overload to zero, this typically means the meter
is in proper working order.
4. Visually inspect leads for damage before using. Replace if
insulation is damaged or leads appear suspect.
5. Never ground yourself when taking electrical measurements. Do not touch exposed metal pipes, outlets, fixtures
etc. Keep your body isolated from ground by using dry
clothing, rubber shoes, mats, or any other approved insulating material. Keep your fingers behind the finger
guards on the probes. Work with others.
6. Before beginning all unknown measurements, set meter to
highest possible range.
7. Before breaking a circuit for testing, turn off the power to
the circuit. When disconnecting from a circuit, disconnect
the hot lead first, then the common lead.
8. Disconnect the meter from the circuit before turning off
any indicator, including motors, transformers, and solenoids.
6
Auto Power Off Feature
• If the meter is idle for more than 30 minutes, power is
automatically turned off.
• The APO annunciator on the display indicates that this feature is enabled.
• To disable this feature, power up the meter while pressing
the MIN/MAX, REL , or Hold button.
• The meter will give an audible indication 15 seconds prior
to powering down the meter.
• Power can be restored, with the display in the saved state
by pressing any of the buttons.
• Power can also be restored by changing the rotary switch.
5
MIN MAX Button
• The MIN/MAX button toggles between the stored minimum, and maximum values.
• Pressing the button the first time displays the minimum
value, the second time displays the maximum value, and
pressing the third time displays the actual measurement
with the MIN and MAX annunciators blinking.
• Pressing hold while in this function stops the meter from
updating the minimum and maximum values.
• To escape this function, press the MIN/MAX button for 2
seconds.
REL Button
• This function displays the differential between the actual
measurement and the last value displayed before pressing
the REL button.
• Pressing the hold button while in this function stops the
display from updating the new differential value.
• Pressing the REL button for >2 seconds enables the
recall function.
Hold Button
• Pressing the hold button stops the meter from updating
the LCD display.
• Enabling the hold function in normal measurement will
switch the meter from auto-ranging to manual ranging, but
will not change the full scale range. The meter can be
returned to auto-ranging by pressing the range, blue or
hold button.
• When the hold button is used in conjunction with the peak
hold, MIN/MAX, or RELr functions, the hold function must
be released by pressing the button prior to returning to
exiting the function.
Overload Protection
Function Overload Protection
VAC & VDC 1000V
AAC & ADC 1A/500V
10A/500V
Ohms (Ω) 600VAC/600VDC
Diode 600VAC/600VDC
Continuity 600VAC/600VDC
Unit of Measure Multipliers
For your reference, the following symbols are often used to
make measurement easier:
Symbol
Verbal Multiplier
M mega x 1,000,000
K kilo x 1,000
m milli ÷ 1,000
µ micro ÷1,000,000
8
DC Volts
Range Resolution Max Display Accuracy
400mV 0.1mV 400.0 +
(1.5% +8)
400mV 100µV 400.0 +(0.3% +2)
4V 1mV 4.000 +
(0.1% +2)
40V 10mV 40.00
400V 100mV 400.0
1000V 1V 1000
To Measure DC Voltage:
1. Plug the Black test lead into the COM port and the Red
test lead into the Ω port.
2. Set the rotary switch to the V position.
3. Push the blue button until DC is shown on the display.
4. Connect the meter in parallel with the load or circuit.
5. Measure DC Voltage
Input Impedance: 10MΩ (over 1000MΩ in 400mV range)
MIN/MAX
~Hz PEAK
HOLD
Data Acquisition
2
Circuit Connection:
7
AC Volts
Range Resolution Max Display Accuracy
400mV 0.1mV 400.0 +
(1.5% +8)
40Hz ~ 60Hz
4V 1mV 4.000 +(1.0% +5)
40Hz ~ 500Hz
40V 10mV 40.00 +(0.5% +5)
50Hz ~ 60Hz
+(1.0% +5)
40Hz ~ 1kHz
400V 100mV 400.0
750V 1V 750
To Measure AC Voltage:
1. The Plug the Black test lead into the COM port and the
Red test lead into the VΩHz port.
2. Set the rotary switch to the V position.
3. Push the blue button until AC is shown on the display.
4. Connect the meter in parallel with the load or circuit.
5. Measure AC Voltage
Input Impedance: 10MΩ less than 100PF
MIN/MAX
~Hz PEAK
HOLD
Data Acquisition
2
Circuit Connection:
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