Setting Into Operation; Operation - Omnitronic VHF-250 User Manual

5 SETTING INTO OPERATION

5.1 Connecting the receiver
1 Install the receiver on a plane surface and adjust the antennas vertically.
2 Connect the receiver to the subsequent unit (e.g. mixer, amplifier):
• Use the balanced XLR output LOW Z for connection to a balanced microphone input.
• Use the unbalanced 6.3 mm jack output HIGH Z ffor connection to an unbalanced microphone input or
highly sensitive line input. To connect the receiver to a mixer or amplifier without microphone level
input, the output can be switched to line level with the switch MIC/LINE.
• Use the unbalanced 6.3 mm jack "MIX" for the master signal of both receiving channels, for connection
to a microphone input or a highly sensitive line input via the supplied connection cable.
3 Connect the power supply unit to the DC IN jack of the receiver and the mains plug to a mains socket.
Use the receiver only with the supplied power unit. Always disconnect the mains connector when you
wish to change connections, move the unit to a different place or if it is not used for a longer period.
5.2 Inserting a battery into the hand-held microphone
1 Unscrew the screw cap at the lower end of the microphone.
Only replace by the same type or similar types recommended by the manufacturer.
Remove empty battery in accordance with the instructions of the manufacturer.
2 Insert a 9 V battery as indicated in the battery compartment.
3 If the gain adjustment has been made, screw on the cap (chapter 6).
Batteries are hazardous waste and should not be disposed of with regular domestic waste!
Please take discharged batteries to a collection center near you.
4 With a new battery, the microphone can be operated for approx. 6 hours. If the battery indicator "LOW
BAT" lights up the battery is exhausted end must be replaced.
5 If the microphone is not used for a longer period (approx. 1-2 weeks), please remove the battery to
prevent damage in case of battery leakage.
Please also refer to the explanations in chapter Safety Instructions.

6 OPERATION

1 After connecting the receiver to the mains, it is powered on.
2 The threshold for the interference suppression can be adjusted with the control SQUELCH. The control
is factory preset at the 12 o'clock position for optimum performance. No further adjustment is normally
required. However, it is possible to adjust the control to emphasize either signal quality or system range.
• To raise the squelch threshold, rotate the control clockwise. This causes the receiver to demand a
higher quality signal (less noise before muting), but it reduces the operating range. For this purpose,
leave the microphone in off position. Set the control SQUELCH clockwise to position "MAX". The
reception indicatiors must not light. If the reception indicatiors light up, interferences are received. To
suppress the interferences, set the control SQUELCH counter-clockwise until the reception LEDs are
just extinguished. Do not set the control any further, otherwise the microphone may also be
suppressed.
• To lower the squelch threshold, rotate the control counterclockwise to position "MIN". This allows a
lower quality signal through (more noise before muting), but it extends the operating range.
3 To switch on the hand-held microphone, set the on/off switch to position "PWR". The power indicator
lights. If it fails to light up, a new battery must be inserted.
If the reception of the radio signal is of sufficient power, the reception indications "A" or "B" lights.
CAUTION!
Danger of explosion when battery is replaced improperly.
BATTERY DISPOSAL NOTICE
Please dispose of discharged batteries properly.
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