DG-OHM
UNAOHM Srl Rev. 4.0
9
5 INSTRUCTIONS FOR USE
5.1 POWER
The DG-OHM Compact can be powered 3 ways:
voltage alternating from 90V to 260V by means of included external power supply
Li-Ion battery which, when fully charged, has an autonomy of more than 5 hours
external continuous voltage between 11.5V and 15V with current of at least 3A
5.2 START-UP AND SHUT DOWN
The instrument turns on and off by holding down the
button for a few seconds.
5.3 BATTERY USE
The battery charges while the instrument is in stand-by with the power on.
2 LEDs which switch on depending on charging conditions are found on the front of the
instrument, above the
button:
red LED on:
instrument off with charging battery
green LED on:
instrument off with battery fully charged
LED off:
instrument on
Some important notes on battery use:
Before using new batteries, it is a good idea to perform three complete charging and
discharging cycles.
To view the battery charge status and therefore residual autonomy, see the battery icon on
the upper left of the screen. When the battery charge is low, the icon will become red
before the instrument switches off. At this point, we recommend interrupting use of the
instrument and recharging the battery as soon as possible. If you continue to use the
instrument (5 - 10 minutes max), the instrument will switch off.
When the equipment remains inactive for long periods, we recommend charging the
battery at least once a month to prevent deterioration.
We recommend switching on the instrument at least once a month for a few hours.
5.4 PREPARATION FOR START-UP
Upon start-up, the instrument returns to the same conditions of use at the last shut down if it
was shut down using the
button, with the following exceptions:
Power supply voltage (for safety reasons) in output from the input connector RF IN is
always excluded whenever TPSAT is not used.
The measurement status of the digital sections QPSK , OFDM or QAM is not restored.
Each time a button is pressed a short acoustic tone is heard in confirmation of the operation.
To mute the "beep," press the
button, position the cursor on BUZZER and select OFF.
