Audio RK2040 Bedienungsanleitung

RK2040

USER GUIDE

RK2040 Diversity Rack System

The RK2040 is a true diversity rack system housed in a compact 1U high 19-inch rack

frame and can be configured as a minimum two receiver rack system with the

capability of expansion to a four receiver rack system. The rack has built-in active,

filtered, RF distribution amplifiers, with two auxiliary RF outputs to enable another

RK2040 rack to be fed from a single pair of antennae.

All receiver and rack parameters can be set from the simple, intuitive menu structure

via four tactile buttons beside each of the individual backlit LCD displays allowing

comprehensive monitoring of RF levels, Audio level and transmitter battery status.

The RK2040 also has four transformer balanced line outputs as well as an adjustable

headphone output.

The RK2040 has a built-in RS485 PC interface allowing the receiver parameters to be

set-up and remotely monitored up to 1000 metres away.

The Racktop™application, supplied free of charge with the RK2040 allows up to 12

fully loaded racks to be remotely monitored via the RS485 PC interface.

Racktop™ can set the individual parameters for the receivers and also has scan and

plot signal functions incorporated into the software.

The RK2040 can be powered from an external DC source between 10-18 volts. A

mains powered DC power supply is supplied with the RK2040.

Audio Ltd

Audio House

Progress Road

High Wycombe

HP12 4JD

U.K.

T: +44 (0)1494 511711

F: +44 (0)1494 539600

E: [email protected]

W: www.AudioLtd.com

Controls Displays and Connectors

OK MENU

123

1. ON/OFF power switch

2. Backlit LCD Display screen

3. Menu button

4. Up/Down scroll buttons

5. OK button

6. ¼ inch Stereo jack socket

7. Headphone level control

10 12

14 13

RF OUT

NTENNA

RF OUT

BANTENN

B432 1

LINE OUTPUTS PC INTERFACE

RS 485

DC INPUT

10-18V 1A

8. BNC antenna input A

9. BNC antenna input B

10. 4 x Transformer balanced XLR outputs

11. 2 x RS485 9-pin D-type interfaces

12. 4-pin XLR male DC Power socket

13. RF output B

14.RF output A

Setting up the RK2040

onnect power the RK2040 using the AC to DC power supply unit provided with

n/Off Switch ggle switch (1) provides the facility to turn on the RK2040 rack by

ntenna Inputs nae to the BNC sockets marked A (8) and B (9) on the rear panel.

F Outputs nnectors RF Out A (14) and RF Out B (13) provide the facility to link

eadphone Output t socket (6)allows any combination of receivers to be monitored

eadphone Level Control s controlled via the level control (7).

udio Outputs onnectors (10) provide transformer balanced line level outputs.

S485 PC Interface

wo standard 9 pin D-type connectors (11) provide a link to a PC. Multiple racks can

CD Display

our backlit LCD display screens (2) display the RF and Audio levels, TX battery

K2040 & Receiver setting Switches

enu, Up, Down and OK switches (3, 4, 5) set all parameters for the rack and

receivers through a simple and intuitive menu.

Connect power to

the RK2040. Plug the four pin XLR connector into the power socket (12) on the rear

panel. The RK2040 requires a DC supply in the range 10 – 18VDC, with a maximum

current of 1.5A.

A two position to

switching the toggle switch to the down position.

Connect the anten

Two BNC co

two RK2040 racks together provided the frequency range of the two racks are

compatible.

The headphone outpu

via a standard ¼ inch stereo jack socket (wired as mono).

The headphone output level i

Four 3 pin XLR c

be cascaded together via the D-type connectors with only one cable required to link to

a PC.

status, frequency of receiver, name of artist and a host of other rack and receiver

parameters.

THE DISPLAY SCREENS

The diagram below shows the various features that may be displayed on the

screens in the normal operating mode (receiver not in set-up mode).

Fig:1 THE PARTS OF THE NORMAL DISPLAY SCREEN

The RF Level Bars

The two upper bars display the RF signal strength for the two diversity

channels, labelled

A and B.

The Diversity Icons

Following the labels, to the left of these bars, are the diversity icons. One of

these will normally be displayed, indicating which RF signal is being used. If

the receiver squelch is active, the diversity icons are replaced by a single

rectangular block.

The Audio Level Bar

Below the RF bars is the audio level indicator bar, labelled AF.

The Transmitter Battery Status Indicator

The icon displayed in the top-right corner of the screen shows the status of

the transmitter battery. This icon indicates the battery status as 1 of 6 levels.

The Audio Monitoring Icon

When the ‘headphones’ icon is displayed in the bottom-right corner of the

screen, this indicates that the audio output from that receiver is routed to the

front-panel monitoring socket. Any combination of the four receiver outputs

may be simultaneously monitored.

In normal operating mode, alternate presses of the ‘OK’ button to the right of

the screen will add or remove the receiver audio output to the monitor

channel.

The Rack Supply Low Icon

If the power input to the rack falls below the pre-set level, the rack supply low

icon will be displayed in the bottom-left corner of the screen. This icon will

blink periodically. The input level which causes this warning to be displayed is

adjustable by the user via the set-up menus. This warning facility can also be

turned on or off via the set-up menus.

The Text Display Line

A line of text is displayed at the bottom of the screen. This line can display up

to sixteen characters and the contents may be selected from two sources by

the user.

Text Display Option 1:

Fig:2 DISPLAYING THE USER ID TEXT.

The contents of the receiver User ID field are displayed. Within the rack, this

feature may typically be used to label the channel source.

Text Display Option 2:

Fig:3 DISPLAYING THE CHANNEL AND FREQUENCY.

The currently selected channel number and frequency for the receiver are

displayed.

The Set-up Menu.

The parameters of the individual receivers and of the rack may be changed by

the user. To do this, a set-up menu system has been incorporated.

To enter the set-up menu, press the ‘MENU’ button when in normal operating

mode.

Pressing the menu button displays a screen which prompts the user to press

and hold the up and down buttons for 1 second to continue. At the end of this

time, the 'set frequency' screen will appear.

If the rack is being controlled by Racktop, access to the menu functions may

be reduced. Typically, only read-only parameters and display setting will be

enabled.

A display similar to the following display will appear:-

This line steady →C H : 3 2 8 5 7 . 9 5 0 MHz

This line flashing →S E T F R E Q U E N C Y ?

Fig:5 SET-UP MENU, OPTION #1.

The first option offered in the set-up menu is to set the receiver frequency.

The line “SET FREQUENCY?” will be flashing (where text is flashing, it is

indicated in this document to the left of the line).

To exit from the set-up menu back to normal operating mode, press the ‘MENU’

button.

To scroll the menu to see the other options, press the ‘∧’ or ‘∨’ buttons.

To accept the displayed set-up option, press the ‘OK’ button.

The various set-up options will now be described in turn, in the order in which

they appear in the menu.

SET FREQUENCY?

If the ‘OK’ button is pressed while ‘SET FREQUENCY?’ is flashing, the set-up

sequence will enter the frequency setting mode. The set-up option will stop

flashing and the currently selected frequency will flash instead, as shown

below:-

This line flashing →C H : 3 2 8 5 7 . 9 5 0 MHz

This line steady →S E T F R E Q U E N C Y ?

Fig:6 FREQUENCY SETTING SCREEN.

Press the ‘∧’ or ‘∨’ buttons to scroll through the available frequency table.

When the desired frequency is displayed, press the ‘OK’ button to select it.

Once the ‘OK’ button has been pressed, the displayed frequency will be

entered into the receiver’s internal memory. The top line of the display will

stop flashing and the SET FREQUENCY? line will commence flashing again.

You can either press the ‘OK’ button to change the frequency again or press

the ‘∧’ or ‘∨’ buttons to scroll through the other available set-up options.

If the ‘MENU’ button is pressed while the top line is still flashing, the set-up

mode will be cancelled, the display will be returned to normal operating mode

and the previous frequency setting will be restored.

SET AF?

Pressing the ‘∨’ button while SET FREQUENCY? is flashing will move to the

second set-up option screen, shown below:-

This line steady →

F LEVEL : - 2dB

This line flashing →S E T

Fig:7 SET-UP MENU, OPTION #2.

If the ‘OK’ button is pressed while ‘SET AF?’ is flashing, the set-up sequence

will enter the AF attenuator setting mode. The set-up option will stop flashing

and the currently selected attenuator setting will flash instead, as shown

below:-

This line flashing →

F LEVEL : - 2dB

This line steady →S E T

Fig:8 AF ATTENUATOR SETTING SCREEN.

Press the ‘∧’ or ‘∨’ buttons to scroll through the available attenuator settings.

When the desired setting is displayed, press the ‘OK’ button to select it.

Once the ‘OK’ button has been pressed, the displayed setting will be entered

into the receiver’s internal memory. The top line of the display will stop

flashing and the SET AF? line will commence flashing again. You can either

press the ‘OK’ button to change the setting again or press the ‘∧’ or ‘∨’ buttons

to scroll through the other available set-up options.

If the ‘MENU’ button is pressed while the top line is still flashing, the selection

will be cancelled, the display will return to the set-up menu (Fig:7) and the

previous AF setting will be restored.

If the rack is being controlled by Racktop, the AF level may display MUTED.

This can only be cancelled from the front panel if Racktop has not disabled

menu access.

SERIAL No

Pressing the ‘∨’ button while SET AF? is flashing will move to the next set-up

option screen, shown below:-

This line steady →0 1 3 8 2 5 - 0 1

This line flashing →R X S

Fig:9 SET-UP MENU, OPTION #3.

Notice that there is no ? following ‘S/N.’ on the bottom line. This is because

there is no option to change this parameter. The serial number is set into the

receiver during manufacture and cannot be changed. Wherever the set-up

option is not followed by ?, the parameter cannot be changed.

Press the ‘MENU’ button to exit the set-up menu or press the '∨’ button to move

to the next set-up option screen, shown below:-

ON/OFF?

This line steady →R X O N

This line flashing →R X O N

OFF?

Fig:10 SET-UP MENU, OPTION #4.

This menu option allows you to turn off the power to the receiver. Press the

‘OK’ button to change to the power control screen. The display will change as

shown below:-

This line flashing →R X O N

This line steady →R X O N

OFF?

Fig:11 RX POWER CONTROL SCREEN.

Pressing the ‘∧’ or ‘∨’ buttons will alternate between RX ON and RX OFF.

In the normal operating mode, when a receiver is turned off, the screen will

only display the word OFF on the bottom line.

To restore power to the receiver, press the ‘MENU’ button to enter set-up mode.

This will take you directly to the RX POWER CONTROL SCREEN (Fig:11).

SET USER ID?

Pressing the ‘∨’ button when the screen is displaying set-up option #4 (Fig:10)

displays the next option, which is SET USER ID? This screen offers the user

the opportunity to edit the text (if any) in the receiver’s User ID text space.

The display will change as shown below: -

This line steady →P R I N C E C H

RM I NG

This line flashing →S E T U S E R I D ?

Fig:12 USER ID EDIT (CURSOR POSITIONING) SCREEN.

The top line will display the current contents (if any) of the receiver's User ID

space.

Press the ‘OK’ button to enter the User ID text editing mode. The screen will

change as shown below: -

P R I N C E C H

RM I NG

Cursor only flashing →

S E T U S E R I D ?

Fig:13 USER ID EDIT (CURSOR POSITIONING) SCREEN.

Press the ‘∧’ or ‘∨’ buttons to move the character position cursor forwards or

backwards along the text line. The ‘∧’ button moves the cursor to the right,

the ‘∨’ button moves it to the left. Holding down either arrow key will cause the

cursor to step continuously. When the cursor is at either end of the 16-

character line, further presses will cause it to ‘wrap-around’ to the other end of

the line.

If the ‘MENU’ button is pressed while the cursor is flashing, the display will

return to the set-up menu screen (Fig:10).

The character (or empty space) above the current cursor position will be

selected for editing when the ‘OK’ button is pressed. The cursor will then stop

flashing and the indicated character will be displayed alternately normal and

reversed, as indicated in Fig:14 below:-

Character reversed →P R I N C E C H

RM I NG

S E T U S E R I D ?

Fig:14 USER ID EDIT (CHARACTER CHANGING) SCREEN.

Press the ‘∧’ or ‘∨’ buttons to scroll through the available character set.

Holding down either arrow key will scroll continuously through the character

set. When the desired character is displayed, press the ‘OK’ button to select it.

Once the ‘OK’ button is pressed, the character will be replaced in the text string

stored in the receiver and the display will return to the cursor positioning

screen (Fig:13).

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