Analog FM Modulation Monitor Ready M4FM User Manual
Welcome Thanks for purchasing the DaySequerra M4FM Analog FM Modulation Monitor. We design and build all of our DaySequerra products to be completely reliable and easy to use, so you can concentrate on producing great sounding broadcasts, not struggling with complicated equipment or difficult to use product manuals.
Table of Contents Important Safety Information 4 Service Information 4 Introduction 5 M4FM Key Features 6 M4FM Technical Specifications 7 Unpacking and Installing 8 Operating Description - Controls and Indicators 9 Front Panel 9 Rear Panel 10 LCD Display 11 Modulation Measurements 12 System Menu 13 WebServer 19 Restore Factory Settings 25 Three Year Warranty 26 M4FM – Features • Frequency-Agile RF Input – Synthesized FM preselector provides -50 dB quieting sensitivity < 30 dBf
Important Safety Information • • • • • • • • • • Indoor use only. Not for use in wet or damp environments. Maximum Relative Humidity: <80% Class I Equipment (grounded type) Electrical rating: 100-120/220-240V~50-60Hz 18W Fuse Rating: 2A 250V 20MM AC Mains supply voltage fluctuations are not to exceed +10% of the nominal voltage Operations temperature range -40°C to 70°C Maximum altitude: 3000m (9843ft) Equipment suitable for continuous operation Weight: 5.4kg (12lbs) equipment only; 8.
Introduction DaySequerra’s M4FM is the most powerful and cost-effective FM analog radio modulation monitor available today. Using a state-of-the-art Texas Instruments® DSP running at 350 MHz, all of the M4FM processing takes place in the digital domain. The M4FM’s Texas Instruments® DSP provides superb analog audio performance (SNR > 75 dB and THD < 0.1%) as well as simultaneous total, pilot, L, R, L+R and L-R, and all Composite-SCA modulation level measurements with better than 1.0% accuracy.
M4FM Key Features • Bright LCD front panel display of Station, presets, RBDS with network and alarm conditions • Frequency-Agile RF Input – Synthesized FM preselector provides -50 dB quieting sensitivity < 30 dBf (-90 dBm) • Built-in RF Attenuator – 30 dB for wide RF input range of <0.
M4FM Technical Specifications Frequency Range FM: 87.5 MHz to 107.9 MHz in 100 or 200 KHz increments RF Input Range 0.5 vRMS to 7 vRMS on 75-ohm F-type connector Sensitivity < 30 dBf (-90 dBm) for -50 dB Quieting Modulation Frequency 30 Hz – 100 KHz Frequency Deviation ±75 KHz for 100% Modulation Frequency Deviation Indication 0 to 150% Deviation Frequency Deviation Indication Accuracy ±1.0% @ 0% to 150% Deviation Composite Signal Output Frequency Response < ± 0.25 dB THD (IEEE 185) < 0.
Unpacking and Installing the M4FM Immediately upon receiving your M4FM, please make a careful inspection for any shipping damage. If damage is found or suspected, please notify the carrier at once and then contact your dealer. The DaySequerra M4FM is shipped in one carton, which contains: the M4FM unit, and an AC power cable. We strongly encourage you to save the shipping carton and shipping materials supplied with your M4FM.
Navigation The M4FM employs a 3-button user interface. From the start ‘HomeScreen’ press the center button once. An arrow will appear next to the frequency. Use the UP/DN arrow button to toggle the Arrow on the LCD around the different fields on the HomeScreen. Press the Center button to select a field to change. The arrow will start to flash indicating that the UP/DN arrows are available to change the value of the field. Press the Center button to save and exit.
when held for three seconds it tunes faster at 1.5x speed. Down selects next stored preset station in PRESETS mode (no faster mode, one push per preset). Selects next item in other menus and is used for other functions as described herein. • Center Button – Used to enter SELECTION MODE and to confirm and save that selection; Press and hold for 3 seconds to enter SYSTEM MENU. Press and hold for 3 seconds to exit SYSTEM MENU.
click of the ‘Check Firmware’ button on the webserver. (A network Internet connection must be available to successfully upgrade the firmware.) • AC Power - Auto-sensing 85-264VAC, 47-63Hz input. • The Power (Rocker) switch is located on the rear panel of the M4FM; when switched on the unit model number will be displayed on the LCD. LCD HomeScreen 4 5 1 6 2 3 7 Figure 3. 1. Tuner Frequency – Selects manual FM tuning with UP and DN controls.
Modulation Measurements A series of read-only submenus displaying audio, demodulation and subcarrier measurements. To exit to the previous menu enter selection mode and toggle the arrow up to EXIT and press the CENTER button to revert back to the home screen. (Graphical representations of these are available in the meters of the webserver) Figure 4. Audio Figure 5. Integer values for Left, Right, Left + Right and Left – Right are displayed in dB. This is a read-only submenu. Figure 6.
Demodulation Figure 7. Integer values for Positive, Negative and Total Positive and Negative are displayed in %. This is a read-only submenu. Subcarriers Figure 8. Integer values for Pilot, 57 kHz, 67 kHz, and 92 kHz are displayed in %. This is a read-only submenu. System Menu Press and hold the CENTER button for 3 seconds to enter the SYSTEM menu. Use the arrow buttons to navigate to the desired submenu.
Audio Muting - The M4FM’s audio output can be set to automatically mute for received signals with signal strength less than 45dBf. Alarms Program Loss Monitor – Enabling any alarm will disable tuning, presets and band selection from the WebServer and M4FM box User interface.
Threshold: Low, Medium or High. (Default – low) Delay: Use the arrow buttons to select from 1 – 300 seconds of delay (default – 15 sec) Status: Use the arrows to toggle between Enabled or disabled to turn the alarm ‘ON’ and ‘OFF (default – disabled) Save: Saves all conditions and exits back to the Alarm menu.
Relay Output Customizes a specific alarm to each of the six relay outputs on the DB-15. See figure 9. for the DB-15 pin-out • • Output 1 – Audio Loss, RF Carrier Loss, Pilot Present, Over Modulation, Empty. Default: Audio Loss Output 2 – Audio Loss, RF Carrier Loss, Pilot Present, Over Modulation, Empty. Default: RF Carrier Loss • Output 3 – Audio Loss, RF Carrier Loss, Pilot Present, Over Modulation, Empty.
Region Figure 13. M4FM supports 100 KHz or 200 KHz tune spacing for US and Euro. (Illustrated in figure 13.) The factory default is set to US, 200 KHz. Press ENTER after making a selection to save and EXIT to the previous menu RF Loss Pad -30 dB of attenuation is applied during startup by default unless this feature is disabled. Remotely this feature is available with the ‘Other Settings’ box in the System Menu of the webserver. Enable or Disable. (Default: Enabled) Select to exit to the previous menu.
Figure 15. DHCP is set to ‘ON’ by default. Disabling DHCP allows the users to manually enter an IP, Subnet and Gateway. Exiting this menu will save and reset the M4FM if a change has been made to DHCP. The new manual IP address will be displayed on the LCD homescreen Enter selection mode and toggle the arrow to IP, Subnet or Gateway and press the ENTER button once. The first field (3 digits) will start to flash. Use the arrow buttons to change up or down within the allowed range.
WebServer Provides full access to the M4FM remotely via web browser. A network connection or crossover cable is required for this feature. Crossover cables may be used when a Network connection is not available. Power ON the M4FM and open a web browser. Type the IP address of the M4FM in the URL to open the WebServer.
Tuner Tab 2 3 4 1 5 6 Figure 17. 1. Tuner Frequency - The tuned frequency is displayed in a large font here. Tuning buttons tunes the frequency Up and Down within the range of 87.5 MHz to 107.9 MHz in 100 or 200 KHz increments. Holding the button for more than 3 seconds will increase the speed by a factor of 2. 2. RF Level and SNR – Displays the amount of RF strength from the tuned frequency; SNR – Displays READ-ONLY signal to noise ratio express in dB 3.
Meters Tab 1 2 3 Figure 18. 1. Audio Measurements (Bargraph) – displays Left, Right, Left + Right and Left – Right channels in dB. Integer values of these measurements are available in the M4FM’s meters submenu. 2. Carrier Measurements (Bargraph) – displaying Positive, Negative and Total Positive + Negative in percent. Integer values of these measurements are available in the M4FM’s meters submenu. 3.
Alarms Tab 2. 3. 1. Figure 19. 1. Alarm configurations – sets the individual conditions for each of the 6 alarms. *Slide the Enable switch to the right to enable an alarm. The M4FM box user interface will display the exact state of the alarm under ‘Status’ Enable = Alarm ON, Disable = Alarm OFF. Enabling any one alarm will disable tuning. Disable ‘Alarms Lock Tuning’ from the ‘Other Settings’ section of the webservers SYSTEM tab to turn this feature off. By default the Alarms Lock Tuning is enabled. 2.
Network Tab 1. 3. 2. Figure 20. 1. Network Settings – Enables and disables DHCP. Enabling DHCP allows the DHCP router to chose an IP address for the M4FM and auto-populate the subnet and gateway. The tuners MAC is READ-ONLY and cannot be changed. Disabling DHCP allows the user to manually enter the IP address, Subnet, and Gateway. Select SAVE to store the settings. The settings are not set until saved. 2. Private FTP Settings – Enables and disables the use of a private FTP site to store firmware updates.
System Tab 1. 4. 2. 3. Figure 21. 1. Network Time – M4FM will automatically acquire the network time from the host server. Set the Time Zone and Daylight Savings for your region. 2. Misc. Settings – Sets many of the tuners basic features. a. Audio muting - The M4FM’s audio output can be set to automatically mute for received signals with signal strength less than 45dBf. b. RF loss pad - Attenuates the amount of RF to the tuner in high RF areas by -30 dB c. De-Emphasis - Switch between 75µsec and 50µsec.
buttons on front panel will turn the LCD back on and reset the 120 second timeout again. Disabling will keep the LCD backlight illuminated full time. 3. Actions a. Check for update - Check for Update’ when selected will search for a more recent version of firmware if available. A pop-up window will tell the user if the Firmware is current or an update is available. If an update is available the firmware will be automatically downloaded.
DaySequerra – Three Year Limited Warranty DaySequerra warrants this product to be free from defects in materials and workmanship to its original owner for three (3) years from the date of purchase. DaySequerra will repair or replace such product or part thereof that upon inspection by DaySequerra, is found to be defective in materials or workmanship. A Return Authorization Number must be obtained from DaySequerra in advance of return.
