GatesAir Intraplex VF-25, Инструкция по установке и эксплуатации, Страница: 63 / 73

Appendix A – MAs for VF-25 Voice Module Intraplex VF-25 Voice Module
Version 7.1, November 2009
GatesAir, Inc. A-29
Intraplex Products
Table A-34. MA-308 Switch Settings
Channels 1-4 Transmit (T) Receive (R) Gain
1 In Out -23 dB Transmit circuit
1 Out In -23 dB Receive circuit
2 In Out -23 dB Transmit circuit
2 Out In -23 dB Receive circuit
3 In Out -23 dB Transmit circuit
3 Out In -23 dB Receive circuit
4 In Out -23 dB Transmit circuit
4 Out In -23 dB Receive circuit
All Channels In In -23 dB Transmit & Receive circuits
All Channels Out Out No additional attenuation
A.2.3.6 Installation
To install the MA-308 module adapter, perform these steps:
1. At the rear of the chassis, insert the adapter into the same slot position in which the VF-25 module
has been installed.
2. Once it is seated securely, secure the unit with screws provided.
3. Plug the connector into the adapter.
A.2.4 MA-308B Four-Wire, RJ-45 Connector
The MA-308B module adapter combines
● Modular connectors
● Monitoring jacks
● Tandem application attenuators
The MA-308B is designed to use with 4-wire E&M Voice Frequency Modules in any Intraplex Products
multiplexer. It provides eight connectors for signal connection and monitoring, as well as eight
switches for control of additional signal attenuation. The switches are marked T=Transmit and
R=Receive, for each of the four channels (Figure A-19).