Extra; Receiver; Finding Interference Frequencies - AKG IVM4 User Instructions

- "HARD" 1 to 3: aggressive compression for massive boost of punch and loud-
ness.
• To save the selected Setting, press SETUP briefly.
• In DUAL mode, the compressor will control channel 1 gain only!
• To activate the bypass, select "ON". All SOUND Settings will be deactivated.
• To deactivate the bypass, select "OFF". The SOUND Settings will be activated.
The EXTRA menu provides six submenus that appear in the following order:
• You can choose from the following modes:
- "STEREO" for stereo input signals.
- "DUAL" for two independent input signals.
- "MONO" for mono input signals.
- "SR4500" for mono transmission to an SR 4500 receiver.
• In DUAL and SR4500 modes, no room simulation is available and the com-
pressor will operate on channel 1 only.
• Mono signals will not be transmitted in mono unless the room simulator is de-
activated.
• You can choose from the following modes:
- "AUTO": When the transmitter is in SETUP mode and nobody touches a con-
trol for approx. three minutes, the transmitter will automatically switch to
LOCK mode. (You can still switch to LOCK mode manually at any time.)
- "MANUAL": You can only lock the setup menus manually.
• You can set the brightness of the display from 1 (dark) to 10 (bright).
This setting is only active in LOCK mode.
• You can call up the following details about your transmitter in this order:
- Firmware version (e.g., "F 3.09")
- Frequency band (e.g., "B 5.E5")
- Preset version (e.g., "P 1.00")
- Audio preset version (e.g., "A 03.00")
• You can reset all parameters to their default settings ("YES") or leave them un-
touched ("NO").
• Press SETUP briefly. The display will revert to the EXTRA screen.
In addition to the basic functions described in section 3 above, the SPR 4 receiver
provides a number of advanced functions.
The Field Scan function automatically searches the receiver's entire frequency band
for interference frequencies.
The frequency spacing for the automatic scan is 100 kHz. Any frequency whose
field strength exceeds the set threshold is defined as an interference frequency and
saved in a scan list. Once the can is completed, you can retrieve the scan list.
The receiver can store a maximum of seven interference frequencies or three inter-
ference ranges with their upper and lower frequency limits. As soon as the end of
the examined frequency range (Stop frequency) is reached or the scan list is full, the
scan will stop automatically.
IVM 4
4 Advanced Functions
«
Note:
BYPASS:
Refer to fig. A14
on page 129.

4.1.2 EXTRA

Refer to fig. A15 (p. 130).
MODE:
Refer to fig. A16
on page 130.
Note:
LOCK:
Refer to fig. A17
on page 131.
LIGHT:
Refer to fig. A18
on page 131.
INFO:
Refer to fig. A19
on page 132.
RESET:
Refer to fig. A20
on page 132.
ESCAPE:
Refer to fig. A21
on page 132.

4.2 Receiver

4.2.1 Finding Inter-
ference Frequencies
37