Holland Electronics ST-4000 - Manual (Page 8)

4 Meter Calibration
This meter has been factory calibrated. The user can recalibrate each individual channel by
connecting a CATV or VHF/UHF signal source with a known RF level to the meter input. The
factory calibration of all channels can also be restored at any time.
4.1 CORRECT CH dB (Calibration)
Adjust the displayed power level to match the input signal source level as follows:
Press the 0/2
nd F key then the SET key.
Press “” or “” to point “
” to “Correct CH dB”. Press ENT key.
Use “” or “” to adjust the displayed LEVEL value to match the input signal source.
Press SET to save the calibration. Press “” or “” and repeat for the next channel.
LCD will display:
CH to correct Video Carrier (V) Current correction (offset) value
CH02 Video Carrier modified value (offset)
Measured Level value after modification
The displayed CH02V is the channel to be modified. The displayed mode is the video carrier.
The calibration adjustment is applied to both the video carrier and audio carrier readings.
NOTE: User is not able to modify audio carrier calibration independently.
Press CLR when all channel calibration changes have been completed
4.2 CLEAR CORRECT
Restore to the factory preset calibration values.
Press the 2
nd F key then the SET key.
Press “” or “” to point “
” to “Clear Correct”. Press ENT key.
LCD will display:
NOTE: If you have entered this menu by error and do not want to restore the factory
calibration values, press CLR key to escape the operation and return to testing mode
Press ENT key again to confirm and restore the factory preset calibration values.
This function will take a few seconds. All the modifications are cleared (correct value =0dB)
6
CH02V +0.0dB
LEVEL 15.6dBmV
Clear Correct
Press “ENT”