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Method Three
When you cannot shut off the carrier and you do not have a band pass filter.
1. Locate a channel that does not have another channel below it, or where there is a
band guard. Tune to the picture carrier of that channel using channel number or
frequency.
2. Press the C/N key. The meter stores the carrier level.
3. If you tuned using a channel number the meter will switch to the corresponding fre-
quency and begin to flash. If you tuned using a frequency, the meter will remain in
the frequency mode and begin to flash.
4. Use the UP/DOWN keys or number keys and CHN/FRQ to search for the lowest
noise level near the channel. This is often 1.5 MHz below the carrier.
5. When you have found the lowest noise reading, press ENT. The meter reads the
noise level, adds a correction factor, calculates and displays the C/N ratio.
6. Press ESC/CLR to return to the signal level mode.
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This Minimax is equipped with a digital channel measurement facility. It is activated by a
quick press of the CN/DIG key.
Note: If this key is held down, the Carrier to Noise function will be activated. To exit the
Carrier to Noise function, press ESC/CLR.
To Measure a Digital Channel: From any channel, Press (do not hold) “CN/DIG”.
The display will flash “digtL on”, then “di” followed by the channel number and the signal
level.
During digital channel measurements, the LCD readout is automatically corrected to
show the average power level of a 6 MHz digital channel.
The microammeter (Minimax-M models only) is not corrected during digital channel
reading and thus shows a lower, incorrect level. Use the microammeter only for peak-
ing during digital channel reading.
The Minimax remains in the Digital Mode until the CN/DIG key is pressed again.
Once in the Digital Mode:
-
Tune other digital channels using either the UP/DOWN or number keys followed by
CH.
-
All Favorite Channels are measured as digital even if they were programmed in the
analog mode.
-
The
▲
PA and HUM functions cannot be activated.
-
The Minimax remains in the digital mode after shutoff and restart.
To return to normal analog channel reading: Press (do not hold) “CN/DIG”.
The display will flash “digtl OFF”
Note: To activate Carrier to Noise measurement, Press and Hold the CN/DIG key.
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