Fig.4 Time Setup Menu
10-03-03 11: 43: 15
Time Setup
Yes
08-10-25
15：02：03
In the time setup menu, the button becomes arrow button - using it to move
cursor. When the cursor moves to a number, the user can use ▲ button to increase the
value and ▼
button to decrease the value. When the cursor moves to “ Yes” and press
button for more than 2 seconds, the “ Yes” will flash, means the instrument accepts
the time change. During the time setup, the user can press button (less than 2
seconds) to exit time menu and back to the test menu, then the system time setup
remains unchanged.
5. Unit Switch
When the instrument is in normal test mode, press button can switch the unit
between dBm and dB. Here, the unit dBm is the actual power and unit dB is a power
value relative to reference value. Refer to the next section about “Reference Value
Setup”. When the instrument is in the P/F test mode, pressing button will
automatically exit P/F test mode and switch to normal test mode. Its unit will be in dB.
6. Reference Value Setup
In the test menu, press button for more than 2 seconds, then the LCD will display
“REF” in red (see Fig. 5). This means the instrument chooses the current light power as
the reference value. The test results afterward are the values after comparing to this
reference value. Now, the unit will be in dB and LED below the LCD display will not light.
MENU
REF/SEL
dBm/dB
dBm/dB
REF/SEL
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