Measuring Frequency And Duty Cycle (17B Only); Maintenance; General Maintenance; Testing The Fuses - Fluke 17B User Manual

15B & 17B
Users Manual

Measuring Frequency and Duty Cycle (17B only)

The Meter can measure Frequency or Duty Cycle while
making either an AC Voltage or AC Current measurement.
I
Pressing the button will switch the meter to manual
range. Select appropriate range before measuring
frequency or duty cycle.
1. With the Meter in the desired function (AC Voltage or
AC Current), press the
2. Read the frequency of the AC signal on the display.
3. To make a duty cycle measurement, press the
button again.
4. Read the percent of duty cycle on the display.

Maintenance

Beyond replacing batteries and fuses, do not attempt to
repair or service your Meter unless you are qualified to do
so and have the relevant calibration, performance test,
and service instructions. The recommended calibration
cycle is 12 months.

General Maintenance

Periodically wipe the case with a damp cloth and mild
detergent. Do not use abrasives or solvents.
Dirt or moisture in the terminals can affect readings.
To clean the terminals
10
I
button.
I
1. Turn the Meter OFF and remove the test leads.
2. Shake out any dirt that may be in the terminals.
3. Soak a new swab with isopropyl alcohol and work
around the inside of each input terminal.
4. Use a new swab to apply a light coat of fine machine
oil to the inside of each terminal.

Testing the Fuses

XW Warning
To avoid electric shock or injury, remove the
test leads and any input signals before
replacing the fuses.
1. Turn the rotary switch to
2. Plug a test lead into the
probe to the A or mA i terminal.
•
A good A terminal fuse is indicated by a reading
between 000.0 Ω and 000.1 Ω. A good mA i
terminal fuse is indicated by a reading between
0.990 kΩ and 1.010 kΩ.
•
If the display reads o, replace the fuse and test
again.
•
If the display shows any other value, have the Meter
serviced. See "Service and Parts" later in this manual.
F
.
J
terminal and touch the