NORMARC 7050 Скачать руководство пользователя страница 22

USER MANUAL

2-10

21464-5

NORMARC 7050

MARKER BEACON

Tests and adjustments

©1999 Navia Aviation AS

.

Table 2-1 MB Configuration settings

S1 and S3 will decide the model (NM 7050 A, B, C or D) and show up in the 

Link Status

 win-

dow in the RMM program and the 

Initial Window

 in the LCD menu.  A disagreement between 

the settings and the actual number of modules will cause a 

M

AINTENANCE

 W

ARNING

 on the 

Front Panel

 and an 

E

RROR

 in the 

Maintenance

 window.

With S2 = 

I

N

 the A

CCESS

 G

RANT

 switch on the 

Remote Control

 will have no effect.  You may 

still acquire 

ACCESS

 

LEVEL

 2

 and 

3

 on the 

RMM remote port

 if the settings of S6 and S7 per-

mits.

S4 decides weather lost communication with the 

Remote Control

 will cause shutdown (no TX 

to air) or not.  

S5 instructs the transmitter control software weather a failed standby transmitter will be shut 
down or continue to transmit.

S6 and S7 decides the highest 

ACCESS

 

LEVEL

 permitted on the 

RMM remote port

.  All access 

levels are available on the RMM local port regardless of S6 and S7.

2.2.2

Setting inner, outer or middle marker

To configure the beacon for outer, middle or inner marker set the straps (S1-S4) on the trans-
mitter board(s) according to Table 2-2.

Table 2-2 Marker function configuration

Strap no State

Function

S1

Strap 

IN

2 power supplies 

(NM 7050 B/D)

Strap 

OUT

1 power supply 

(NM 7050 A/C)

S2

Strap 

IN

Access Grant disabled

Strap 

OUT

Access Grant enabled

S3

Strap 

IN

2 monitor units 

(NM 7050 C/D)

Strap 

OUT

1 monitor unit 

(NM 7050 A/B)

S4

Strap 

IN

Lost contact with remote control will NOT cause shutdown

Strap 

OUT

Lost contact with remote control will cause shutdown

S5

Strap 

IN

Standby transmitter failure will NOTcause shutdown

Strap 

OUT

Standby transmitter failure will cause shutdown

S6

Strap 

IN

Access level 2 on RMM remote port enabled

Strap 

OUT

Access level 2 on RMM remote port disabled

S7

Strap 

IN

Access level 3 on RMM remote port enabled

Strap 

OUT

Access level 3 on RMM remote port disabled

S8

Should always be left open.

Strap Function with strap in
S1

Beacon is INNER marker

S2

Beacon is MIDDLE marker

S3

Beacon is OUTER marker

S4

Beacon is FAN marker

Содержание 7050

Страница 1: ... 1999 Navia Aviation AS NORMARC 7050 MARKER BEACON Transmitter ...

Страница 2: ... 1999 Navia Aviation AS ...

Страница 3: ... by a lowpass filter after the PA Part of the signal out of the PA is tapped off to be demodulated and used for feedback and self test purposes Demod ulation is done by a mixer with a linear detector The audio signals are generated in the LF circuitry mainly by a Field Programmable Gate Array FPGA Inner Middle or Outer Marker is selected by straps 1 1 1 Block diagram Figure 1 1 TX1373 Block diagra...

Страница 4: ...om the oscillator to the PA The sig nal from the oscillator is fed to one of the ports of a dual gate MOSFET The signal enters the In From Description IOD 7 0 MO 1374 Parellel data bus for communication between TX 1 2 CI and MO1 TXCS MO 1374 Transmitter card select TXWR MO 1374 Write strobe for IO bus TXRD MO 1374 Read strobe for IO bus TX_ADR CI 1376 Transmitter select TX_ON MO 1374 Transmitter o...

Страница 5: ...0VDC drain voltage After amplification the peak power will be 43 dBm with a dynamic range of 75 80 dB The TX is capable of delivering 4W carrier power Signals in 75 MHz RF from oscillator AGC Modulation voltages up to 12VDC Power Supply 20 VDC Bias 0 5 V to power stage Signals out RF to detector LP Filter LOW PASS FILTER The output signal from the PA is filtered to remove harmonic frequencies The ...

Страница 6: ...s as well as the ON OFF signal from the AGC and the detected signal from the PA MAINTENANCE MONITOR CIRCUITRY The purpose of the onboard monitor circuitry is to give the Monitor card MO 1374 information about the status of the transmitter The AMUX_ADR 3 0 from the MO 1374 is applied to the analogue multiplexer These four lines select one of sixteen possible signals to be measured The signals measu...

Страница 7: ... 1999 Navia Aviation AS 21464 5 TX 1373A Transmitter TRANSMITTER NORMARC 7050 MARKER BEACON 1 7 1 2 Schematics ...

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Страница 18: ...TRANSMITTER 1 8 21464 5 NORMARC 7050 MARKER BEACON TX 1373A Transmitter 1999 Navia Aviation AS 1 3 Photos ...

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Страница 21: ... Marker Beacon according to desired sys tem configuration 2 2 1 General Configuration The static control strap on the Connection interface board sets hardware configuration remote access configuration and shutdown configuration Figure 2 1 shows where the static control strap is located on CI 1376 Figure 2 1 Location of Static Control Strap on CI 1376 Set the configuration for the MB according to T...

Страница 22: ...are available on the RMM local port regardless of S6 and S7 2 2 2 Setting inner outer or middle marker To configure the beacon for outer middle or inner marker set the straps S1 S4 on the trans mitter board s according to Table 2 2 Table 2 2 Marker function configuration Strap no State Function S1 Strap IN 2 power supplies NM 7050 B D Strap OUT 1 power supply NM 7050 A C S2 Strap IN Access Grant d...

Страница 23: ... straps on transmitter board 2 3 Adjustment points The adjustment points are shown in Figure 2 3 and explained below The figure shows a fully equipped system NM 7050D see chapter 3 for configuration details 1 Battery charging voltage nom 27 4V 20 C 1 Bias for power transistor use factory settings 1 Battery protection cut off voltage nom 22V 1 Tx Detected Rf level nom 2 5V 4W carrier S1 S2 S3 S4 TX...

Страница 24: ...ent is most easily done with the RMM PC program but the local keyboard display may be used Make sure the output signal RF OUT is terminated with a 50Ω load antenna or dummy load If this is an Inner Marker make sure the external attenuator is installed Start the RMM program on the PC see chapter 10 Open the TX settings window RF LEVEL for TX1 and TX2 are to be adjusted Open the Maintenance window R...

Страница 25: ...is procedure The software adjust ments are most easily done with the RMM program but may be carried out from the front panel Connect a reference wattmeter to the output signal RF OUT Set TX1 to air Watch the maintenance parameter CARRIER POWER Adjust the TX settings parameter RF LEVEL until the watt meter shows 2W Check that the Maintenance parameter CARRIER POWER on TX1 is accurate to within 5 If...

Страница 26: ...y select transmitter set up by clicking the NORMAL TEST1 or TEST2 tabs Figure 2 5 Selecting test settings You may choose between three pre set transmitter settings by clicking the USE NORMAL USE TEST 1 or USE TEST 2 buttons Figure 2 6 Adjusting the RF level ΤNote that when leaving access level 2 3 the Normal set up will be loaded into the transmitters This is also the case when turning the transmi...

Страница 27: ...C that is used to feed the modulation circuitry in the transmitter Figure 2 8 Setting keying type There are three possible keying alternatives NORMAL CONTINUOS and OFF the two latter used for test or maintenance purposes FAN MARKER If the station is configured as a FAN MARKER the keying may be set quite freely Each of the 24 Data boxes corresponds to one tick which endures for approximately 150ms ...

Страница 28: ...464 5 NORMARC 7050 MARKER BEACON Tests and adjustments 1999 Navia Aviation AS Figure 2 9 Fan marker keying programming Note that the Fan Marker settings are available only when the transmitter are configured as Fan Marker ...

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