ZETRON 4000 Series, Руководство по установке

Страница: 128 / 418

Wireless Interface Options
128 025-9533Y
Next, add a Map27 telephone port for the connected M4217 dispatcher.

To configure the Telco Port
1. Start the
M827BASE for Windows
application.
2. Navigate to Site Configuration Editor , Edit , Telco Ports Editor .
3. Define the
Site Selection
.
4. Define the Telco Port Number . This is the M427 audio port connected to the
M4217.
5. Set Line Connects To to Dispatcher .
6. Set
Link Type
to
Leased Line
or
Microwave Link
. Neither of these options
should have E&M listed in it.
7. Save the entry updates to this data record.
MAP27 Audio Level Settings
The MAP27 Wireless Control Card uses a different level setting procedure than the
Universal Dual Channel Card. There are gain setting provisions for both the Rx audio
level and the Tx audio level at both ends of the console-to-M427 audio link. Because of
this there is more than one correct way to set the audio gains. The following procedures set
the M427 gains about midway up (28 out of 64) prior to the actual audio level adjustments
using the pots on the front of the MAP27 channel card. In each direction a sine wave tone
is enabled at the transmitter and an adjustment is made to a hardware pot on the front of
the MAP27 card while monitoring the received audio level.
Before starting, the console mic level must be set correctly and the console must be
configured such that it can send a 1kHz alert tone. The console will not send an alert tone
unless a destination radio can be reached, so the console, the M427, and the radio must be
configured so that it is possible to make a call from the console to a remote radio through
the M427. The Console Rx level, however, can be adjusted without being able to make a
call because the M427 has an independent test mode to enable a test tone.