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R20.0
Features
Support for 25G and 100G rate options
Sentinel can now be configured to make 25G and/or 100G measurements (Time Error and SyncE) on up to two channels where supporting packet module extension card is fitted and the appropriate license is purchased.Simplified PTP
Defined by the Open Compute Project (OCP), simplified PTP exchanges a reduced set of packets and simplifies sync management in certain data center applications.Improvements to TIE modes
Several enhancements have been made to the TE mode menu on the measurement tab.Default mode changed to TIE + 1pps TE
As it is the most used clock measurement mode, TIE + 1pps TE mode is now the default option for TIE Mode. In this mode, the Time Error (TE) of any 1PPS signals presented to the clock card are displayed on the TE display. The time interval error (TIE) of any other clock signals is displayed on the TIE display.Removal of TE
The TE option is no longer required and has been removed.TIE + 1PPS Alignment
The ‘TIE + 1PPS TE’ mode follows the ITU standard. According to the ITU standard, if the 1PPS signal being tested has an extra or missing pulse there will be a 1s offset in the measurement. Alignment mode ignores extra or missing pulses and compares the reference to the edge of the nearest pulse of the input signal if present.
Protection from flashing malicious firmware
Sentinel checks the firmware signature prior to updating to avoid the loading of malicious firmware.
As consequence of this enhancement, once this version of software is loaded onto the instrument, it will not be possible to downgrade to any earlier version of the firmware.Improved management of clock channels
Enhancements have been made to improve the usability of the available measurement resources in the instrument. SyncE measurements can now be turned off from the mode page when not required. This frees a measurement channel for 1pps TE measurements when the internal reference is used.
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R16.0.2
Features
Battery Enhancements
This release enables the use of Option 631 Battery Powered Operation. Instruments with this software release and Option 631 Battery Powered Operation fitted will benefit from the below features:Transport Mode - maintains phase accuracy of Sentinel’s disciplined internal Rb clock when mains power is removed, allowing for accurate reference when the instrument is transported to site.
UPS - should external power to Sentinel be interrupted, the internal battery will act as an uninterruptible power supply and allow Sentinel to continue to be used until power is restored or full discharge of the battery.
Battery powered OTA measurement - allows Sentinel to operate without external power, maintaining accuracy of the Rb clock and enabling measurements to be made.
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Please read Sentinel: Clock Channel Triggers Always on Negative Slope (Resolved) before applying this software |
Features
OTA-NR Cell Scan
This release adds cell scan capability for OTA-NR, similar to the existing cell scan feature for OTA-LTE. For full details please refer to the Sentinel User Manual.
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| Note |
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Please read Sentinel: Clock Channel Triggers Always on Negative Slope (Resolved) before applying this software |
Features
Added Metrics and Masks
A range of metrics and masks have been added to Sentinel as summarised in the table below:
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| Note |
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Please read Sentinel: Clock Channel Triggers Always on Negative Slope (Resolved) before applying this software |
Features
HTTP(S) Interface
An HTTP(S) interface has now been added to Sentinel allowing a basic remote control functionality. For full details please refer to the Sentinel User Manual.Continuous Measurements
An option has now been added to the measurement settings page to allow the user to select continuous measurements. This means that Sentinel will continue to make a measurement on a rolling 24 hr basis.IPv6 on the Management Port
There is now the ability to use IPv6 addresses on the management port for Sentinel.Disable SyncE
SyncE can now be disabled independently of PTP/NTP measurements. This feature is available via the mode page.Disable Metrics
If you don’t want to run any metrics or masks you can disable this on the measurement settings page.
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R12
Features
NTP functionality is now supported on the 10G hardware
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Packet module does not send IGMP messages for multicast routing.
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R11
Features
10GbE functionality
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Notes:
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[SEN-1085] Ethernet Gateway Ping button is enabled when DHCP is enabled.
[SEN-1151] Sentinel doesn't reach 128 packets per second for Delay Request rate.
[SEN-1726] Configuring Sentinel from Electrical to optical ethernet results in no RevPDV being recorded.
[SEN-1781] Apply button will only change IP address / Mask / Gateway setting on the first press.
[SEN-1796] Protocol check does not detect Delay Response if multiple PTP multicast flows are present.
[SEN-1803] Moving from GNSS settings page with invalid value on antenna delay causes crash.
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R10
Features
This release offers a software and hardware feature enhancement on Sentinel. New options are associated with this enhancement (Option 700 or 710), providing Time Error (TE) accuracy measurements on LTE signals Over The Air (OTA), by way of a measurement module which can be fitted to one of three module slots on the Sentinel platform.
The software incorporates the following optioned features:
‘Over The Air’ Time-Error
LTE Time Error measurement solution.
TE measurements for ITU-T G.8271.1/2 network requirement of 1.5us at the air interface.
Frequency (TIE) measurements for ITU-T G.8261.1 network requirement of 50ppb at the air interface.
Small Cell (Macro/Femto/Pico) Time Error measurements.
FDD and TDD LTE operating modes, covering frequency bands up to 3.7GHz.
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This release offers software only feature enhancements on Sentinel. No new options are associated with these enhancements.
Features
The software has added the following feature and change to Sentinel:
NTP support for 2 Way Time Error measurement.
NTP pseudo client mode.
Additional GNSS support for GLONASS, Galileo, Beidou and QZSS constellations.
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This release offers software only feature enhancements on Sentinel. No new options are associated with these enhancements.
Features
The software has added the following feature and change to Sentinel:
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Fixes an issue with the number of satellites indicated.
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R8.1
Features
The software has added the following feature and change to Sentinel:
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This release offers software only feature enhancements on Sentinel. No new options are associated with these enhancements.
Features
The software has added the following features and changes to Sentinel:
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This patch release of software added several enhancements and fixed a few software Defects.
Features
GPS Related Enhancements
Sentinel GUI now displays the GPS receiver survey status and the signal to noise ratio (SNR) of all satellite signals. This is in addition to other information already available on the GUI.
Performance Related Enhancements
Several changes have been made in order to improve user friendliness.
From this patch release, the last measurement storage selection is remembered by software. This simplifies the operation to make a measurement.
Simplified software upgrade process. With this patch release, future upgrade is just one-click away.
The performance of virtual keyboard has improved as well.
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This patch release of software adds Auto-negotiation feature to Sentinel.
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R6
Features
The software has added the following features and changes to Sentinel
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