Model 5402 User Guide
Issue 3, August 2021
Studio Technologies, Inc.
Page 35
Model 5402
DANTE LEADER CLOCK WITH GNSS SYNCHRONIZATION
sync input.) The information on this menu page will only
be relevant if the factory has been contacted in regards to
a technical issue.
Row Two
Row two has four front-panel menu pages that involve
configuration of the GNSS (satellite) receiver circuitry.
Date and Time:
The current date and time will display in
this menu page. This information is from the GNSS receiver
and should be quite accurate. The date will display in a
DD-MMM-YYYY format. The day of the month will be in
the form of two numeric digits. The month will display as
three alphabetic characters. The year will display as four
numeric digits. The time will be shown as HH:MM:SS in
UTC (Universal Coordinated Time). If the GNSS receiver
is not locked to a constellation then a message that reads
GNSS Sync Unlocked will display.
Antenna Status:
This menu page displays the current
status of the GNSS antenna input. The possibilities are
Connected, Initializing, Disconnected, and Shorted. The
GNSS receiver depends on the connection of a compatible
external multi-band antenna. One is provided with each
Model 5402. Others can also be utilized if specialized
characteristics are required. Any message but Connected
would indicate a condition that needs investigation.
Number of Satellites and Signal Strength:
This menu
page will display details about the Model 5402’s internal
GNSS receiver. The value for the number of satellites is
directly related to the total number of satellites that are
currently being received. In factory testing of the Model
5402 the number of satellites that were concurrently being
received ranged from 0 to 28. And it’s possible that more
than 28 could be received at the same time at some loca-
tions. The number of satellites will normally change over
time. This is due to the fact that the navigation satellites are
always moving in relation to the Model 5402. What specific
satellites are locked with the Model 5402’s GNSS receiver
will be constantly changing over time.
The signal strength is shown in the form of five graphical
bars of ascending height, left to right. The more bars that
are displayed the greater the received signal strength. And
in this case the more the better; an increase in received
signal strength will typically lead to a more-reliable timing
reference being obtained from the satellites associated with
the selected constellation or constellations.
Time to First Fix (TTFF):
This menu page shows the
amount of time (in seconds) that elapsed between when
the Model 5402 performed a bootup (restart) and when
the GNSS receiver first established a fully locked condi-
tion. Subsequent reboots of the GNSS receiver will not
cause a new TTFF value to be stored. Technically, time to
first fix (TTFF) can be considered to be a measure of the
time required for a GNSS-based system to acquire satel-
lite signals and navigation data. From that the receiver
can calculate a position solution. (The position solution is
called a “fix.”) The TTFF value is typically only of use when
troubleshooting an installation. In general, the lower the
TTFF value the better.
Row Three
Row three has five front-panel menu pages that involve the
management IP address and related parameters. Two are
display-only and three allow changes to be made.
Current Management IP Address:
This menu page will
show the IP address associated with the Model 5402’s
internal management web server. This address can be
assigned automatically using the DHCP protocol or, if a
DHCP server is not available, using the IPv4 link-local
protocol. (An IP address that has the format of 169.254.
x.x was assigned using IPv4 link-local.) The management
IP address can also be manually assigned with a fixed or
static IP address. If no Ethernet connection has been made
the text Link Down will be displayed.
If the Model 5402’s network configuration in the Dante
Controller application is selected for Switched or Redun-
dant then this menu page will show the IP address that’s
associated with the connection made to the Model 5402’s
management RJ45 jack.
If the Model 5402’s network configuration in the Dante
Controller application is selected for SMgmt then
the IP address that is displayed will be associated with
a connection that is made to either the Dante primary or
Dante secondary Ethernet interface.
If the network configuration in Dante Controller has been
selected for ReMgmt then the IP address that is
displayed will be associated with a connection that is made
to the Dante primary Ethernet interface.
Current Management Subnet Mask Value:
This menu
page will show the subnet mask value setting that is ac-
tive for the management interface and associated web
server. If the IP address and related network parameters
were obtained by way of DHCP then this field will display
an IPv4 subnet mask value in dot-decimal notation. If the
IP configuration mode is selected for Automatic and the
current IP address was obtained by way of link-local, then
255.255.0.0 will show. It’s also possible that the subnet
mask value was manually entered as part of a fixed or
static IP address setting.
Management IP Configuration:
This menu page allows
the display and revision of the method that the Model 5402
will use to obtain a management IP address and related
parameters. The choices are Automatic and Manual. The
