Quick Installation Guide

Step-by-step setup instructions

1. Power Supply and Power On

   Before plugging in the unit:

   • Verify the position of the mains voltage selector (200/240V or 100/130V) on the rear panel.
   • Use the supplied three-pin Interlock power cable.
   • Ensure proper grounding.
   • The unit has a power switch on the rear panel.

   Never connect the unit without verifying the correct position of the voltage selector.

2. Unit Control

   From the front panel:

   The front panel includes a control wheel:

   • Rotate the wheel to select options and change values.
   • Press the wheel to confirm a value or access an option.

   The display shows status menus, active inputs, gain settings, and audio presets.

   Remote control via WEB interface:

   • Connect the Ethernet port of the 542APC to the local network using a standard UTP cable.
   • Factory setting is DHCP: the router will automatically assign an IP address.
   • The IP address appears on the processor’s startup screen.
   • From a computer on the same network, open a web browser and enter the processor’s IP address.
   • The web remote control home screen will appear.
   • To edit options, go to ADJUST mode in the top right corner of the screen.
3. Input Connections

   • Balanced analog (XLR) – default input.
   • Analog RJ45 – compatible with StudioHub®.
   • Digital AES3.
   • Audio stream (optional AoIP module).
4. Input Adjustment

   • Analog inputs calibrated to –18 dBfs for nominal level of +4 dBu.
   • With the console at 0 VU, signal peaks at the input should be between –22 and –9 dBfs.

   If necessary, gain can be adjusted from the front panel.

   Selecting an input (front panel)

   1. Rotate the wheel to the INPUT (VU meters) screen.
   2. Press the wheel to access active input.
   3. Rotate the wheel and select the desired input (e.g., 2:ANALOG2).
   4. Press to confirm.
   5. The active input is indicated by an arrow on the INPUT screen.

   Changing input gain (front panel)

   1. Rotate the wheel to SETUP MENU and press to enter.
   2. Rotate to select IN and press to enter INPUT SETUP.
   3. Press to enter INPUT SEL.
   4. Rotate to select an input and confirm.
   5. Select GAIN and press.
   6. Adjust by rotating the wheel (clockwise = more gain), ensuring peaks stay between –22 and –9 dBFS.
   7. Press to confirm.
   8. Rotate to select BACK and confirm to exit the menu.
   9. Rotate again to BACK and confirm to exit the SETUP menu.
   10. Changes are saved automatically.
5. Outputs

   Baseband MPX

   • Stereo generator with dual MPX output with independent levels.
   • Connect to the transmitter with coaxial cable (50 or 75 Ohms).

   Balanced audio

   • Two stereo analog outputs: XLR and RJ45.
   • Can deliver:
     • Audio with 50/75 μS pre-emphasis.
     • De-emphasized audio (for streaming or translators).

   Emphasis activation is done via Web Control.

6. Tuner and Transmission Monitor

   The 542APC includes:

   • Internal tuner
   • Modulation meter
   • Calibration tone generator

   Reception antenna

   • Connect the telescopic antenna (included) to the FM ANT (BNC) connector.
   • Two antennas are supplied:
     • Telescopic (recommended at transmitter sites).
     • Fixed micro-antenna (when field strength is excessive).
7. Modulation Level

   Calibration tone

   1. From a browser (preferably Chrome), enter the unit’s IP.
   2. Click the SETUP button (top right).
   3. In the side menu, select FM Output (MPX).
   4. Activate the Calibrator. Input audio is replaced by a sine tone.
      • Pilot: 9% – RDS: 4% (factory defaults).

   Modulation adjustment

   1. In Web Control, go to FM Receiver/Analyzer.
   2. Tune to the station’s frequency.
   3. Check the level on the modulation meter.
   4. The RxQTY indicator should show GOOD.
   5. Adjust antenna orientation or type if reception is poor.
   6. Adjust the MPX input level at the transmitter until desired modulation is achieved (100%).
   7. Factory MPX output level: 5 Vpp (adjustable via Web Control).
   8. Turn off the calibrator: normal input audio modulation will resume.
8. Sound Adjustments

   Listen to different factory PRESETS to select the sound that best fits your station’s needs. Tune using a good audio system. You can also listen using the 542APC’s internal tuner (use good headphones).

   The unit includes factory presets and user memories:

   • 16 fixed presets (non-modifiable).
   • 16 user memories to create custom settings (via Web Control).

   Preset selection (front panel)

   1. Rotate the wheel to the PROCESS screen.
   2. Press to change the current preset.
   3. Rotate and select a new preset.
   4. Press to confirm. The on-air sound will gradually transition to the new setting.

   Sound Wizard (WEB control)

   Allows modifying any preset with 4 basic controls:

   • Bright (highs)
   • Bass (lows)
   • Compression/Density
   • Loudness

   Additional stages (enable/disable):

   • Parametric EQ
   • Bass enhancer
   • Stereo enhancer
9. Remote Technical Assistance (RTA)

   The unit enables remote connection for factory support.
   Steps (requires prior coordination with Support Team):

   1. Connect the 542APC processor to the LAN (control Ethernet).
   2. Install the reception antenna.
   3. Verify access from a PC by entering the IP in a web browser.
   4. Download TeamViewer QuickSupport from:
      https://get.teamviewer.com/solidynequick
   5. Run the TeamViewerQS.exe file.
   6. The “Allow remote control” window will appear with direct chat to Support.

   Support contact

   • 📧 [e-mail]
   • 📱 WhatsApp: [phone]