JONARD TOOLS FPM-55 Instruction Manual

Keys and Functions (Continued):
Delete Key – Delete Data/Cancel
While viewing a data entry, you can press the Delete Key to delete the data.
While in Saving Mode, press the Delete Key to delete the current saved data
Units Key – Switch between dBm, dB, and W measurements
Press the Units Key to switch between absolute measurement (dBm), relative
measurement (dB), and xW of the optical power.
mW to dBm Conversion: 10 log(mW)=(dBm)
mW, uW, nW Conversion: 1 mW=103 uW=106 nW
REF Key – Stores the current power value as the reference value
Press the REF Key to store the current power value as the reference value. When pressed,
the reference value will be displayed in the top-right of the screen with "Ref" displayed
next to it.
Relative Value = l︱Absolute Value︱l -︱l Reference Value︱l
LDR LED – Intelligent Backlight Controller LED
If this LED is on, then the unit is in LDR Intelligent Backlight Control Mode. While in this
mode, the unit will automatically adjust the backlight based on the outside lighting, which
helps save power.
B/L SET LED – Backlight Mode Indication LED
If the LED is green, then the FPM-55 is in LDR Intelligent Backlight Control Mode.
If the LED is red, then the FPM-55 is in Key-Control Mode
Indicate backlight control mode. Green light indicate that "LDR"intelligent backlight control
mode, Red light indicate that key-control mode
Troubleshooting:
Problem Possible Cause
Unit will not turn on Faint 1. Power is OFF
display on the LCD screen 2. The battery power is too low
Inaccurate Measurements 1. Optical connector is not clean
2. Incorrect fiber connection
Jonard Tools Warranty:
Product Type
Electric/electronic/battery powered products & force gauges
Solution
1. Turn the device ON by
pressing the Power Key
2. Replace the batteries
1. Clean the optical connectors
with contact cleaner
2. Ensure you are using the
correct connector and reattach
the fiber
Warranty Period
1 Year
FPM-55
OPTICAL POWER METER W/ STORAGE
INSTRUCTION MANUAL