AKG MP 40 User Manual download pdf (Page 50)

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Cable attenuation setting vs. cable length in complex systems

The CLA cable attenuation setting on the booster(s) and antenna splitter(s) depends on the frequency band, antenna type, cable type, cable length, and the position of the cable

within the antenna line.

For details on setting up an antenna network refer to the PS 4000 manual.

Cable position A Cable position A Cable position A Cable position B

SRA2B > AB 4000 or PS 4000 RA 4000 B > AB 4000 or PS 4000 SRA1 > AB 4000 or PS 4000 AB 4000 > AB 4000 or PS 4000

RG 58 RG 213 CLA setting RG 58 RG 213 CLA setting RG 58 RG 213 CLA setting RG 58 RG 213 CLA setting

(m) (m) (dB) (m) (m) (dB) (m) (m) (dB) (m) (m) (dB)

53-57 111-121 0 38-43 79-89 0 8-13 16-26 0 41-46 87-97 0

48-53 100-111 2 33-38 68-79 2 3-8 5-16 2 36-41 76-87 2

43-48 89-100 4 28-33 58-68 4 0-3 4 31-36 66-76 4

38-43 79-89 6 23-28 47-58 6 26-31 55-66 6

33-38 68-79 8 18-23 37-47 8 21-26 45-55 8

28-33 58-68 10 13-18 26-37 10 16-21 24-45 10

23-28 47-58 12 8-13 16-26 12 11-16 24-34 12

18-23 37-47 14 3-8 5-16 14 6-11 13-24 14

Frequency bands I + II

Antenna cables

The amount of signal attenuation across a cable depends on the RF transmission frequency and the quality of the cable.

Note: Belden Cable offers some medium-gage wideband cable types with extremely low attenuation values up to 3.2 dB for 100 feet (30 m) at 700 MHz.

Cable type Impedance Attenuation for 100 feet (30 m) Attenuation for 100 feet (30 m) Gage

at 700 MHz at 200 MHz

RG-58C/U 50 Ohm 17.0 dB 7.3 dB Small

RG-58/U 50 Ohm 11.7 dB 5.6 dB Small

RG-59/U 75 Ohm 8.9 dB 4.5 dB Small

RG-8/U 50 Ohm 3.6 dB 1.8 dB Large

AKG WMS ANTENNA TECHNOLOGY

Single-channel system with SRA 1 passive antennas

For a single-channel system, you can connect the antennas direc-

tly to the receiver.

1. Measure the cable runs between the receiver and each antenna.

2. Refer to the table to find out whether you will need to break the

cable run down into several cables and use antenna boosters.

3. Connect the antennas to the receiver. If you use antenna boo-

sters, you will need a remote power adapter for each booster.

4. Check that the AC mains voltage stated on each power supply

is identical to the AC mains voltage available at the venue.

Using power supplies for a different AC voltage may cause

damage to the unit.

Single-channel system with active antennas

1. Measure the cable runs between the receiver and each

active antenna.

2. Refer to the table below to find out whether you will need to

break the cable run down into several cables and use

antenna boosters.

3. Connect the antennas, antenna boosters, remote power

adapter(s), and the receiver as shown in the diagram.

4. Check that the AC mains voltage stated on each power sup-

ply is identical to the AC mains voltage available at the

venue. Using power supplies for a different AC voltage may

cause damage to the unit.

SELECTING

, PLACING, AND USING ANTENNAS

HOW TO USE ANTENNAS

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AKG MP 40 User Manual Page 50

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