Sennheiser A 3700 - Omnidirectional Antenna Manual

SPECIFICATIONS

Frequency range	470 – 866 MHz
Radiation pattern	omni-directional
Amplification (booster) typ.	bypass (-3 dB), 5 dB, 10 dB, 15 dB adjustable, without DC feed: -6 dB
Impedance	50 Ω
OIP3	≥ 32 dBm
RF connection	BCN socket
Power supply	9 – 15 V / 160 – 100 mA, DC feed via antenna cable (RF OUT socket)
Mounting connection	3/8" or 5/8" thread
Dimensions	250 x 165 x 23 mm
Weight incl. booster	390 g

Pick-up pattern

OPERATION

Overview

1. LED operation indicator
2. BNC socket, RF output (RF out)
3. Amplification selector
4. Mounting thread (3/8" or 5/8")

Setup

LED operation indication

LED 1 color	Selector 3 position	Amplification
red		bypass/ -3 dB
green		+5 dB
blue		+10 dB
white		+15 dB

Suitable cable types and corresponding amplification settings

Depending on the cable length, you have to adjust the amplification using the selector 3.

Accessories

Important safety instructions

1. Read these safety instructions and the instruction manual of the product.
2. Keep these safety instructions and the instruction manual of the product. Always include all instructions when passing the product on to third parties.
3. Always include this instruction manual and the safety guide when passing the product on to third parties.
4. Only use attachments, accessories and spare parts specified by the manufacturer.
5. Do not attempt to open the product housing on your own. The warranty is voided for products opened by the customer.
6. Refer all servicing to qualified service personnel. Servicing is required when the product has been damaged in any way, liquid has been spilled or objects have fallen into the product, when the product has been exposed to rain or moisture, does not operate normally, or has been dropped.
7. Use the product only under the conditions of use listed in the specifications.
8. Do not operate the product if it was damaged during transportation.
9. Always run cables so that no one can trip over them.
10. Keep the product and its connections away from liquids and electrically conductive objects that are not necessary for operating the product.
11. Do not use any solvents or aggressive cleaning agents to clean the product.
12. 
    Very high signal levels can damage your hearing and your loudspeakers. Reduce the volume on the connected audio devices before switching on the product; this will also help prevent acoustic feedback.

Intended use

The product is designed for indoor and outdoor use.

The product can be used for commercial purposes.

It is considered improper use when the product is used for any application not named in the corresponding instruction manual.

Sennheiser does not accept liability for damage arising from improper use or misuse of this product and its attachments/ accessories.

Before putting the products into operation, please observe the respective country-specific regulations!

Safety instructions for antennas

Use safety wires to protect the antennas against tipping/ dropping.

The safety wires, rope terminations and coupling links must comply in their dimensioning and condition with the regulations and standards of the country in which they are used!