DaySequerra TimeLock M4.2 User manual

M4.2
TimeLock™
AM-FM
HD Receiver
User Manual


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M4.2Si TimeLock User Manual
Welcome"
Thanks for purchasing the DaySequerra M4.2 TimeLock™ AM-FM Digital Radio Receiver. 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.
While the M4.2 TimeLock™ has been designed to be straightforward to use, we do suggest that you
spend a few minutes familiarizing yourself with the features and operational functions that are
contained in this manual.
DaySequerra has been building broadcast quality products since 1989. The technology developed for
the M4.2 TimeLock™, and all of our products, has evolved through a process of user feedback,
extensive listening, field-testing and careful refinement.
In the event that you encounter any technical or operational difficulties with this or any DaySequerra
product, please feel free to contact us at 856-719-9900. Our office hours are from 9 to 5 ET, Monday
through Friday. Or you can email your questions to: [e-mail].
Also, please remember to visit our website www.daysequerra.com for warranty registration and the
latest DaySequerra product information.
We have worked hard to ensure that your DaySequerra M4.2 TimeLock™ HD Radio Receiver will
reliably serve as a flawless link between the transmitter and your monitoring facility, or as the primary
broadcast reference source in your studio.
We sincerely hope our products help you achieve a new level of excellence in your work!
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David V. Day
and the DaySequerra Team

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M4.2Si TimeLock User Manual
Table of Contents
Important Safety Information 4
Service Information 4
Introduction 4
M4.2 TimeLock™ Key Features 5
Technical Specifications 6
Unpacking and Installing 7
Operating Description - Controls and Indicators 8
Front Panel 8
Rear Panel 9
LCD Display 10
System Menu 11
Alarm Configuration 11
WebServer 16
Restore Factory Settings 23
Three Year Warranty 24
All rights reserved DaySequerra Corp. Copyright 2009.
All logos and trademark used herein are the property of their respective owners.
Specifications subject to change.
M4.2 TimeLock™
M4.2 TimeLock™ - Features
•
Robust 24/7 performance - stays locked to AM-FM analog, HD-1 or selected
multicast stream during power or I2E interruptions; does not automatically
revert to analog!
•
Proprietary TimeLock™ Algorithm – Measures HD Radio Diversity Delay
time alignment of the HD Radio MPS and HD-1 audio streams with accuracy
to one audio sample, includes TimeLock rear panel alarm tally and email alert.
•Built-in Webserver – Remote Dashboard
webserver for remote control and
logging using any browser on your Ethernet network; 15 presets per
band; Artist Experience displays album art, station logo, and advertiser
branding; remote Flash upgrades; password protected access.

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M4.2Si TimeLock User Manual
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; 8.2kg (18lbs) shipping
Important Note: Please connect your M4.2 TimeLock™ to an uninterruptible power supply (UPS)
to provide other protection against power surges and brownouts.
Service Information
The DaySequerra M4.2 TimeLock™ contains no user serviceable components inside the unit. Please
contact DaySequerra for repair and upgrade information. In the event that your unit needs to be
returned to the factory, contact us for a return authorization number. The monitor ID and firmware
version is momentarily displayed at start-up for your convenience. Please visit
www.daysequerra.com and register your new M4.2 TimeLock™ so we can keep you informed of
the latest hardware and software updates.
Introduction
DaySequerra's new M4.2 TimeLock™ AM-FM Digital Radio Receiver is the most capable next-
generation HD Radio™ platform available today.
With the M4.2 TimeLock™ you can monitor audio and data from your analog and HD Radio broadcasts
including FM multicast channels HD-2 through HD-8. The M4.2 TimeLock™ has no AUTO-Blend
function so it stays locked to the stream you've selected even if the broadcast or your AC power is
interrupted. Hear your HD Radio time-alignment using the M4.2 TimeLock™ built-in Split-Mode. With
the optional TimeLock™ Monitor, the M4.2 TimeLock™ will even send an email if your MPS and HD-1
streams are out of time-alignment. The Remote Dashboard webserver simplifies your under 3-minute
setup and provides total remote control of the M4.2 TimeLock™ using any browser on your Ethernet
network. Plug and Play
Please read this manual thoroughly before operating your M4.2 TimeLock™.
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M4.2Si TimeLock User Manual
M4.2 TimeLock™ Key Features
•Robust 24/7 performance - stays locked to AM-FM analog, HD-1 or selected multicast stream
during power or I2E interruptions; does not automatically revert to analog!
•Bright LCD front panel display of RBDS and HD Radio PAD, along with network and alarm
conditions
•Full-time AES-3 Professional digital audio output even when tuned to non-HD signal
•XLR balanced analog outputs +4 dBm @ 100% modulation; Split-Mode so you can hear your
HD Radio time-alignment
•High performance headphone monitor delivering greater than 1W into 8-ohm
•Remote Dashboard provides total remote control and display of RBDS and all HD Radio
PAD/SIS, network and alarm conditions along with audio level, digital audio quality and carrier
quality indications
•Webserver compatible with any browser on your Ethernet network
•Rear panel alarm tallies for loss of Audio, Carrier, and OFDM Lock and Multicast Loss
•Optional TimeLock™™ Monitor for time-correlation of MPS and HD-1 streams
•Alarms can be emailed to your phone
•Remote reset via rear panel GPI
•Front panel reset – no rear panel power switch
•Remote updates tolerant of high latency networks
•Direct file upload for easy off-line updates
•Use your wireless router for remote control using your Android® or iPhone®
•Also available with RCA outputs - order model M4.2 TimeLock™-RCA

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M4.2Si TimeLock User Manual
M4.2 TimeLock™ Technical Specifications
RF Tuning Range
AM: 520 kHz to 1720 kHz in 9 KHz or 10 kHz increments
FM: 87.9 MHz to 108.1 MHz in 100 KHz or 200 kHz
increments
RF Usable Sensitivity
AM: <20 dBf (-100 dBm) for SNR -20 dB referenced to
30% modulation
FM: <15 dBf (-100 dBm) for SNR -30 dB referenced to 100%
modulation
RF Input F-Type 75 ohm
AM-FM: -55 dBm Nominal: -20 dBm Maximum
IF Rejection
AM: > 100 dB for SNR -20 dB
FM” > 100 dB for SNR -30 dB
AF Bandwidth
AM: +/- 1 dB, 40 Hz to 15 kHz
FM: +/- 1 dB, 20 Hz to 20 kHz
FM De-emphasis
75 uSec
Analog Audio Outputs – Left/Right
Balanced XLR
+4 dBm into 600 ohm at 100% modulation
Digital Audio Output
AES-3 Professional, 110Ωtransformer-isolated on XLR
connector
0 dBFS <.005% THD+N using HD Radio™ input
HD Radio Hybrid Acquisition
<4.5 seconds
HD Radio Split Mode
MPS Left (on R output) and HD-1 (on L output) on Analog,
Digital and Headphone audio
Alarm Notification
Rear panel tallies, front panel indications and email for loss of
Audio, Carrier, and OFDM HD Radio Lock
RBDS Data
Pl (Call Letters), PS (Program Service), PTY (Program Type),
and RT (Radio Text)
HD Radio PAD and SIS Data
SIG, SIS, Extended SIS, AAAS, and LOT; PAD including
station long and short name, program type, song file artist,
album, genre and comment fields
AC Power
Auto-sensing 85-264VAC, 47-63Hz input
Environmental
Operating Temperature: +41 to +105 F (+5 to +40 C) Storage
Temperature: -13 to +140 F (-25 to +60 C) Relative Humidity:
Maximum 85%, non-condensing
Dimensions
1 RU EMI-hardended: 19” (482mm) W x 14” (355mm) D x
1.75” (44mm) H
Shipping Weight
12 lbs. (5.4 kg)
Warranty
Three years, limited parts and labor
M4.2 TimeLock™ Options
M4.2 TimeLock™ RCA – Unbalanced analog and digital
audio outputs on RCA connectors installed in place of
standard XLR Connectors.
M4.2 TimeLock™ Monitor – Provides time-alignment
correlation for MPS and HD-1 streams; rear panel AUDIO
ALARM tally and email notifications. Field-installable
upgrade.

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M4.2Si TimeLock User Manual
Unpacking and Installing the M4.2 TimeLock™
Immediately upon receiving your M4.2 TimeLock™, 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 M4.2 TIMELOCK™ is shipped in one carton, which contains: the M4.2
TimeLock™ unit, an AC power cable, a TorxTM T-8 L-key and this User Manual.
We strongly encourage you to save the shipping carton and shipping materials supplied with
your M4.2 TimeLock™.They are specially designed to properly protect your M4.2 TimeLock™, and in
the event that you need to return it for service, only these OEM shipping materials can ensure its safe
return to our factory.
We provide a limited 3-year warranty on all of our products, but if you don’t register your unit, it’s hard
for us to contact you when software updates become available. So please take a few minutes to
complete the warranty registration form on our web site, www.daysequerra.com. Thank you!
Rack Mount Installation. The M4.2 TimeLock™ chassis has four rack mounting holes in its chassis
and has been designed to fit in a 19” standard 1RU space. Plastic ‘finishing’ washers are
recommended to protect the painted finish around the mounting holes.
Power Connection. The AC power cable supplied with the M4.2 TimeLock™ must be connected from
the M4.2 TimeLock™’s IEC320 power entry module to an AC mains outlet with a functional earth
ground connection. The M4.2 TimeLock™ has been set at the factory to operate at 120VAC unless
otherwise specified on the shipping carton. The M4.2 TimeLock™ export version is configured for
240VAC operation. Please connect your M4.2 TimeLock™ to an uninterruptible power supply
(UPS) to protect against power surges and brownouts.
Antenna Input Connections. Separate 75ohm F-type connector is provided on the M4.2 TimeLock™
rear panel for dedicated AM and FM antennas
Audio Output Connections. Analog audio left and right outputs are on rear-panel XLR connectors
with pin 1 GND, pin 2 + and pin 3 -. The digital audio output is transformer-isolated in S/PDIF format on
a rear-panel XLR connector with pin 1 GND, pin 2 XFMR and pin 3 XFMR. The M4.2 TimeLock™
digital audio output is 5.1 surround capable.
Ethernet Connection - The M4.2 TimeLock™ Ethernet Port offers the use of DaySequerra’s
Webserver by connecting the M4.2 TimeLock™ to any networked computer with Internet access. The
use of crossover cables can be used in areas where a network connection is not possible. More
information on the Webserver can be found at the end of this manual. The Ethernet port with the aid of
the webserver will keep the M4.2 TimeLock™ up to date on all Firmware upgrades by checking,
downloading and installing with the click of the ‘Check Firmware’ button on the webserver. (An Internet
connection must be available for ‘Firmware Upgrade’ to work. UPON RECEIVING THE UNIT IT IS
ENCOURAGED TO ‘CHECK FIRMWARE’ FROM THE WEBSERVER TO BE SURE YOUR M4.2
TimeLock™ IS USING THE MOST RECENT FIRMWARE AVAILABLE.
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Navigation
The M4.2 TimeLock™ employs a simple 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.
M4.2 TimeLock™ Operating Description - Controls and Indicators
Front Panel
Figure 1.
Status
•Alarms – illuminated red when an alarm is enabled and flashes red every second when an
alarm condition is active.
•HD Locked – Blue LED illuminates when tuner has acquired OFDM (orthogonal frequency
division multiplexing) portion of an HD RadioTM signal and digital carrier S/N > 58dB/Hz,
thereby permitting HD RadioTM digital audio to be valid. HD is displayed in upper right hand
corner of VFD when tuner has acquired OFDM portion of an HD RadioTM signal.
•Multicast – Blue LED illuminates when tuner has acquired OFDM of an HD RadioTM signal and
there is at least one multicast signal present.
•RF Level - Bi-colored LED: Green indicates strong RF > 40 dB. Red indicates weak RF < 40
dB.
•Up Arrow – Momentary push UP from the Homescreen will enter the Headphone volume menu.
Both arrows are used to increase and decrease the volume. From selection mode Press
ENTER again to change a value in any a field indicating a blinking arrow ready. Use the UP
and DOWN arrows to navigate/toggle through the available choices or range. UP Arrow button
tunes the frequency up one increment while tuning to a new station, when held for three
seconds it tunes faster at 1.5x speed. UP 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. Holding the UP arrow while powering the unit on will restore
factory settings.
•Down Arrow – Momentary push DOWN from the Homescreen will enter the Headphone
volume menu. Both arrows are used to increase and decrease the volume. From selection
mode Press ENTER again to change a value in any a field indicating a blinking arrow ready.

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Use the UP and DOWN arrows to navigate/toggle through the available choices or range.
DOWN Arrow button tunes the frequency down one increment while tuning to a new station,
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.
•Reset Button – Using a paper clip press the reset button hidden behind the front panel to the
right of the center button to power cycle the unit while holding all presets and other settings in
memory.
•Headphones - Accepts any headphone or monitor that has a 3.5mm stereo mini-jack
connection. Volume control is software based, from the home screen by pressing either arrow
button UP/DN to enter the volume control. Press ENTER to exit and save the desired volume.
Rear Panel
Figure 2.
•RF Input F-Type 75 ohm - AM-FM: -55 dBm Nominal: -20 dBm Maximum
•Analog Audio Outputs – Left/Right Balanced XLR - +4 dBm into 600 ohm at 100% modulation
•Digital Audio Output – AES-3 Professional, 110Ωtransformer-isolated on XLR connector; 0
dBFS <0.005% THD+N using HD Radio™ input
•GPI – The PLM provides six dry, floating relays with outputs on a rear panel mounted DB15
connector to report selected alarm conditions, including loss of RF carrier, program audio,
OFDM lock and PAD data. See the PIN out chart for details under ‘ALARMS’
•The M4.2 TimeLock™ Ethernet Port offers the use of DaySequerra’s Webserver by connecting
the M4.2 TimeLock™ to any networked computer with Internet access. The use of crossover
cables can be used in areas where a network connection is not possible. More information on
the Webserver can be found at the end of this manual. The Ethernet port with the aid of the
webserver will keep the M4.2 TimeLock™ up to date on all Firmware upgrades by checking,
downloading and installing with the click of the ‘Check Firmware’ button on the webserver. (A
network internet connection must be available to successfully upgrade the firmware.)

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•AC Power - Auto-sensing 85-264VAC, 47-63Hz input.
•The Power (Rocker) switch is located on the rear panel of the M4.2 TimeLock™; when switched
on the unit model number will be displayed on the LCD.
LCD
4.
Figure 3.
1. Tuner Frequency – Selects manual AM and FM tuning with UP and DN controls
2. Station Call Letters – Displays the station call letters with the Band
3. IP / PAD & RBDS Data –Toggles between a static IP address and decoded RBDS from
analog broadcasts and PAD data from an HD RadioTM broadcasts for display on the bottom of
the LCD. This field also displays active alarm details, which override IP/PAD/RBDS data.
4. SNR Indicator – Strength bars are displayed indicating the signal to noise ratio. (digital only)
5. BAND/PRESET – AM and FM Bands are selected; 25 AM and FM including Multicast stations
are available to be stored.
6. ST/Multicast – Displays the available multicast stations HD 1 thru HD 8. ST is displayed if HD
is not available
7. Forcing – Switch between Forced Auto, Digital, Analog, and Mono. By default the tuner is set
to AUTO. In Forced AUTO mode, the tuner will receive an HD RadioTM digital broadcast if one
is being transmitted; if not, the tuner will receive the analog broadcast.
•*When the Webserver TimeLock tab is selected the tuner will automatically enable
SPLIT mode. Exiting TimeLock will not disable SPLIT mode and should be manually
disabled if desired.
1.
2.
3.
5.
6.
7.

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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. To EXIT this menu press the UP arrow to EXIT and press the
CENTER button to exit to the Homescreen.
Figure 4.
Audio Muting - The M4.2 TimeLock™ audio output can be set to automatically mute for received
signals with signal strength less than 45dBf.
Forcing A-D Split - The FORCING control is used to select A-D SPLIT mode, functional with AM
or FM HD RadioTM signals. In A-D SPLIT mode, the analog audio outputs and headphone jack
provides left analog program audio in left channel and the left HD RadioTM audio program in right
channel. This mode provides for audio phase matching as well as audio level and time-alignment of
the HD RadioTM broadcast for the correct analog diversity delay. Default mode is off.
Alarms
Program Loss Monitor – Enabling any alarm will disable tuning, presets and band selection from the
WebServer and M4.2 TimeLock™ box User interface.
Program Loss Monitor (PLM) Connections – The PLM provides six dry, floating relays with outputs
on a rear panel mounted DB15 connector to report selected alarm conditions, including loss of RF
carrier, program audio, OFDM and HD Lock, Multicast, and TimeLock™. Opto-isolated inputs will be
triggered by a voltage of 5VDC. The GPIO Alarm output relays are Normally Open and will close when
an alarm is active. See figure xx for the DB15 pin-outs:
Alarm Loss of: No Contact Common
RF Carrier 5 10
Audio 4 9
OFDM Lock 3 8
HD Lock 2 7
Multicast 1 6
TimeLock™ 11 12
Reset 14 15
Pins not used – (13)
Figure 6.

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M4.2Si TimeLock User Manual
Figure 5.
RF Carrier Loss
Threshold: Navigate the arrow to Threshold and press ENTER to change the Threshold. A blinking
arrow will indicate the Threshold can be changed. Low, Medium and High are available to choose from.
Use the arrows to toggle through the choices. Press ENTER to make a selection and return to the RF
Carrier Loss menu. “LOW” option sets RF carrier loss threshold for approximately 10µV (25dBf);
“MED” option sets RF carrier loss threshold for approximately 100µV (45dBf); and “HIGH” option sets
RF carrier loss threshold for approximately 3KµV (75dBf).
Delay: Use the arrow buttons to select from 1 – 300 seconds of delay
Status: Use the arrows to toggle between Enabled or disabled to turn the alarm ‘ON’ and ‘OFF’
Save: Saves all conditions and exits back to the Alarm menu.
Audio Loss (Silence Detect)
Threshold: Navigate the arrow to Threshold and press ENTER to change the Threshold. A blinking
arrow will indicate the Threshold can be changed. Low, Medium and High are available to choose from.
Use the arrows to toggle through the choices. Press ENTER to make a selection and return to the
Audio Loss menu. “LOW” option sets audio loss threshold for approximately -60dB; “MED” option sets
audio loss threshold for approximately -40dB; and “HIGH” option sets audio loss threshold for
approximately -20dB.
Delay: Use the arrow buttons to select from 1 – 300 seconds of delay
Status: Use the arrows to toggle between Enabled or disabled to turn the alarm ‘ON’ and ‘OFF’
Save: Saves all conditions and exits back to the Alarm menu.
OFDM Lock Loss
Delay: Use the arrow buttons to select from 1 – 300 seconds of delay
Status: Use the arrows to toggle between Enabled or disabled to turn the alarm ‘ON’ and ‘OFF’
Save: Saves all conditions and exits back to the Alarm menu.

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HD Lock Loss
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.
Multicast Loss
Delay: Use the arrow buttons to select from 1 – 300 seconds of delay
Status: Use the arrows to toggle between Enabled or disabled to turn the alarm ‘ON’ and ‘OFF’
Save: Saves all conditions and exits back to the Alarm menu.
TimeLock™ Loss
Samples: Sets the samples threshold for the Analog MPS to move ahead or behind HD-1.
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.
Figure 7.
Alarm Buzzer
“ON” or “OFF” option using UP and DN switches to toggle the setting. Select “ON” for audible alarm to
beep during any active alarm condition and continue with alarm configuration menu; select “OFF” for
audible alarm to be silent during any active alarm condition. Press ENTER to save and exit to the
previous Alarm menu
Exit
Located at the top right corner of the Alarm menu is used to exit back to the previous SYSTEM menu.
From Alarms menu press the UP arrow button until the arrow is to the right of EXIT on the LCD then
press ENTER to exit.

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FM De-Emphasis
Switch between 75µsec and 50µsec. M4.2 TimeLock™ is set to 75µsec by default.
Figure 8.
Region
M4.2 TimeLock™ 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
Figure 9.
Diagnostics
A Read-Only menu that displays the SNR (Signal to Noise Ratio) in dB, BER and BLER. The selection
mode arrow is defaulted to the top right corner of the menu. To Exit press ENTER. More
DIAGNOSTICS details can be viewed in the Settings tab of the WebServer.
Figure 10.

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M4.2Si TimeLock User Manual
Network
A Read-Only menu that displays the current status of DHCP, the static IP address, Subnet and MAC
address. Navigate up to the top right corner of the menu and Press ENTER next to EXIT to return to
the SYSTEM menu. More NETWORK details can be viewed
Figure 11.
DHCP is set to ‘ON’ by default. Disabling DHCP allows the users to manually enter an IP address,
subnet and gateway IP. Exiting this menu will save and reset the M4.2 TimeLock™. The new manual
IP address will be displayed on the LCD homescreen
About
A Read-Only menu displaying the HDRadio version, DSP version and Firmware version.
The selection mode arrow is defaulted to the top right corner of the menu. To Exit press ENTER. More
ABOUT details can be viewed in the Settings tab of the WebServer.
Figure 12.

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M4.2Si TimeLock User Manual
WebServer
Provides full access to the M4.2 TimeLock™ remotely via web browser.
A network connection or crossover cables is required for this feature. Crossover cables may be used
when a Network connection is not available. Power ON the M4.2 TimeLock™ and open a web browser.
Type the IP address of the M4.2 TimeLock™ in the URL to open the WebServer.
Five tabs are displayed at the top of the WebServer – Tuner, TimeLock, Alarms, Network, and System.
Tuner – is the main page that controls Frequency Tuning, Presets, Multicast, Forcing Analog / Digital
and displays the Alarm Status of the M4.2 TimeLock™. When Album art and PAD/SIS/RBDS data is
available it is also displayed under this tab.
TimeLock – Displays a sliding bar graph illustrating Analog MPS to the fixed HD-1 Digital. Integer
values are available for TimeLock Measurements in Samples.
Alarms – RF Carrier, Audio, OFDM Lock, HD Lock, Multicast, and TimeLock loss are available for
enabling. Pull down menus are available to map an alarm to a specific relay output on the DB-15.
Network – Configure network settings manually or DHCP enabled. Enable and configure private FTP
and Email notifications.
System – All other tuner actions and settings are available to be set within the SYSTEM tab.
M4.2 TimeLock™ - Home Tab
•Frequency – Displays the tuned frequency in a large bold font (Read-Only)
•Tuning and Band selection – Left and Right Arrows are used to navigate the spectrum
AM and FM tuning spectrum. Holding an arrow for longer than 2 seconds will increase
the speed by a factor of 2. AM/FM Band selector displays the band that the unit is
tuned to. Selecting the AM/FM Band button will toggle to the other.
•Station Logo – Displays the station logo (only if available by the station)
•SNR – Displays a graphical bar indicator with an integer value below it indicating the
actual signal to noise ratio measured in decibels.
•Alarm Status – Displays active alarm conditions in a bold red font.
•Mode Selector – Tuner mode will force Mono, Analog, Digital, Auto (auto detects and
automatically forces what is available). Split mode will place Analog in the left channel
and Digital in the right. When using TimeLock™, SPLIT mode automatically enables.
Exiting SPLIT mode requires SPLIT to me manually disabled if desired.
•Album Art – Displays Album Art when available by the station
•Multicast – Displays any available Multicast stations (HD-2 thru HD-8) that are
available and highlights them in a bold font. Orange font indicates which tuned to.
•AM/FM Presets – Displays 15 AM and FM presets depending on which band the unit is
tuned to. Selecting and holding an empty preset tab for 3 seconds will save the tuned

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to frequency to it. Performing this action on a tab that has a preset already saved to it
will overwrite and save the new station to it.
•RBDS/PSD Data – RBDS/PSD data will scroll when available. PSD scrolls the Station
Long and Short Name, Program Type, Song, Artist, Album, Genre, Comments field.
RBDS scrolls the PI (Call Letters), PS ( Program Service), PTY (Program Type) and RT
(Radio Text). Any active alarm condition will override this data.
M4.2 TimeLock™ - Home Tab
Tuning and Band
selection
Frequency
Multicast
Album Art
*when available
Station Logo
*when available
Signal/Noise
Ratio
Alarm Status
Mode
Selector
AM/FM
Presets
RBDS/PSD
Data
Figure 13.

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M4.2Si TimeLock User Manual
TimeLock™ Tab
•Slide bar – Scale that measures the Analog MPS to HD-1 Digital. The scrub marker will start
illuminate red when the correlation is below 70% and green above. The scrub marker will move
ahead and behind HD-1 depending on the diversity delay.
•TimeLock™ Processing window – displays data for Audio Phase and TimeLock correlation.
Integer values are displayed in Samples and Msec. Positive indicates Analog is leading HD-1,
negative lags. Green indicates Correlation above 70% and Red below.
Calculates the Analog in samples
as leading or lagging HD-1 Digital
Slide bar displaying Analog moving
against fixed HD-1 in real time. Green
indicates better than 70% correlation.
Slide bar displaying
the TimeLock™ scale
in samples and Msec.
Processing data window
indicates correlation, audio
phase, network time, and
TimeLock™ measured in
samples and Msec.
Figure 14.

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M4.2Si TimeLock User Manual
Alarms Tab
•Alarm configuration – Enable/Disable RF Carrier loss, Audio loss, OFDM loss, HD
Lock loss, Multicast loss, and TimeLock™ loss Alarm conditions are set with pull down
windows. Sliding the switch to the left side will ‘ENABLE’ the alarm with the set
conditions. Orange switch indicates the alarm is enabled.
•Relay Outputs – are available for each alarm to be set to a specific relay output. A pin-
out of the GPIO DB-15 is available on page 11 of this user manual.
Alarm Settings
Alarm relay outputs via GPIO
Figure 15.

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M4.2Si TimeLock User Manual
Network Tab
Figure 16.
•Network Settings - Configures network connections. DHCP is enabled by default.
Slide the switch to the right box to disable DHCP. IP Address, IP Subnet, Gateway are
set here. MAC is read only. After the Network settings are saved the M4.2 TimeLock™
will reset itself so the new network settings are enabled.
•Private FTP Settings – An optional private FTP may be setup for firmware updates. By
default this feature is disabled. Slide the switch to the left indicated in orange to Enable
private FTP.
•Email Notifications Settings - configures the M4.2 TimeLock™ for email alerts when
Alarm conditions become active. This feature is set to disable by default. Slide the
switch to the left indicated in orange to enable. Entering the SMTP IP, Port, User
Name, Password, Sender, and Receiver is required. Click ‘Save’ when finished.
Network Settings
Private FTP Settings
Email Settings