AKG SR 4000, Инструкция пользователя

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2.4 General Description
2.5 Controls
2.5.1 Front Panel
Refer to fig. 1.
2.5.2 Rear Panel
Refer to fig. 2.
2.6 Audio Outputs
Refer to fig. 2.
The SR 4000 is a stationary True Diversity receiver for use with all WMS 4000 transmitters. The SR 4000
operates in a subband up to 30 MHz wide of the 650 MHz to 863 MHz UHF carrier frequency band. Within
the subband, you can either set the carrier frequency directly in 25-kHz increments or select one of the
Subchannels of the Preset Frequency Groups of your receiver.
A backlit LCD display indicates all important parameters including the receiving frequency, audio level,
RF level, current operating mode, and remaining transmitter battery life.
The receiver provides two operating modes:
In
LOCK mode , all setup functions are electronically locked to prevent parameters from being readjust-
ed unintentionally during a performance or lecture. The "LOCK" label on the display indicates the receiv-
er is in LOCK mode.
SETUP mode allows you to adjust and save all receiver parameters. In SETUP mode, the "LOCK" label
disappears.
The receiver provides both a balanced XLR and an unbalanced 1/4" audio output.
You can use the receiver as a standalone unit or install it in a 19" rack using the supplied RMU 4000 Rack
Mounting Kit.
The display is protected from scratching by a transparent foil. You can peel the foil off at any time.
1 POWER: Switches power to the unit on or off.
2 LCD Display: The receiver provides a backlit LCD display:
The display indicates all receiver parameters:
a Audio level
b Preset/Receiver Name, Frequency Group, Subchannel (shown in Preset and NAME screens only)
c Received signal field strength
d Diversity indicators (A/B)
e Alphanumeric display of current setting or transmitter battery capacity
f Parameter to be adjusted, mode
3 SETUP: Sets the various parameters of the receiver. The SETUP control has the following functions:
• In LOCK mode:
Turn CW or CCW to the stop: Scroll through the Frequency screen, Preset screen (only available
if a Preset has been stored preciously), receiver name, and battery status (battery capacity in
hours) displays.
Long push: Toggles between LOCK and SETUP modes.
• In SETUP mode only:
Short push: Calls up a parameter for adjustment or confirms a selected value.
Turn CW to the stop to select a menu item or increase a parameter value.
Turn CCW to the stop to select a menu item or decrease a parameter value.
4 ID: If you use the receiver within a multichannel system, you can color-code each channel. Remove
the transparent ID cap, replace the black plastic tab with a different-color tab from the optional Color
Coding Kit, and replace the transparent cap.
5 LED ring (green/red): If one or more warning functions are activated (see section 4.3.2), the LED
ring will be lit red when a critical condition occurs. As long as all parameters are within their normal
ranges, the LED ring is lit green.
6 DC ONLY: Locking DC input for connecting to the supplied power supply.
7 ANTENNA A/B: 2 BNC sockets for connecting the supplied UHF antennas (7a) or optional remote
antennas.
8 BALANCED: Balanced 3-pin XLR audio output for connecting to, e.g., a microphone input on the
mixing console.
9 UNBALANCED: Unbalanced 1/4" TS audio output jack for connecting to, e.g., a guitar amplifier.
10 Output level switch: Slide switch for matching the BALANCED output level to the input gain of the
equipment connected to the receiver. The switch has three positions: -30, 0, and +6 dB. The
UNBALANCED output level is not adjustable.
11 DATA: Data output for connecting to a computer.
12 LOGIC OUT: Logic output for controlling external functions (e.g., channel muting on an AS 8 auto-
matic mixer). This 3-pin Phoenix connector provides the following signals:
1 Receiver audio output on (0 V) / muted (5 V)
2 Logic ground
3 Transmitter batteries o.k. (0 V) / nearly dead (5 V)
25
2 Description
a c d
f
e