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Procedure for applying power to the ATS-6501, including self-test and boot-up indicators.
Connecting to the ATS-6501 via LAN or console cable for setup and command access.
Instructions for configuring a static IP address for network connectivity.
Configuring the IP firewall with example hardened rules and disabling it.
Guidelines for selecting an optimal location for the GPS antenna to ensure signal reception.
Procedure to set the antenna power voltage (0, 5, or 12VDC) via the command prompt.
Modes for determining antenna position: Dynamic, Auto, and Manual survey modes.
Guidelines for installing the ATS-6501 unit into a standard 19-inch equipment rack.
Details of available input/output cards for the ATS-6501, including configuration.
Configuring 1PPS and DC IRIG outputs, including pulse period and width settings.
Generating user-defined bit streams with known relationship to UTC, including clock and stream settings.
Setting IRIG codes and NASA36 time codes for AM IRIG outputs.
Overview of two-way fiber optic output modules and status verification.
Using the TIC card to measure time intervals, setting averaging periods.
Configuring AM IRIG outputs with epoch support (UTC or GPS).
Calibrating the ATS-6501 system delays for accurate timing outputs, accounting for cable length.
Connecting and configuring external frequency references for improved system timing.
Methods to set system time manually when GPS is unavailable or steer source is Manual.
Overview of front panel indicators for unit status, alarms, and operational states.
Indicates hardware failure or timing signal output outside specifications by turning red.
Indicates GPS data collection for position and time solution, showing satellite tracking status.
Shows if the NTP server is providing accurate time and synchronizing network devices.
Location of all hardware interfaces and connectors except Crypto Key; provides eight types of output signals.
Methods for upgrading software: Flash Card Replacement or Remote Software Update.
Checking GPS firmware version and process for updating it.
Accessing the ATS-6501 via telnet for multiple simultaneous sessions on specific ports.
Issuing system commands remotely via Ethernet or USB for system control and error recovery.
Disseminating time to network devices; checking internal NTP server status.
Securing access via SSH keys, including generation and transfer of keys.
Managing local user accounts using pw and psswd tools; requires file system write access.
Displays overall system status, health, and measurement results via command port (1700).
Options for retrieving GPS data: FTP Data Logging or Real Time Data.
Verifying correct operation by checking system parameters, front panel indicators, and alarm status.
How the GPS receiver locks to the 10MHz signal and generates PPS for UTC alignment.
How PPS and IRIG signals are aligned to UTC and used for NTP server functionality.
Detailed sequence for internal device startup, ensuring synchronization of timing outputs.
Steps for inspecting internal components for dust and particles to prevent component failure.
Process for inspecting antenna cable for bends/damage and antenna surface for contaminants.
Using front panel indicators (Status, Clock, Alarm, OSC Lock, GPS Tracking) to assess unit status.
Causes for the red alarm light, including hardware failure, output issues, and reference problems.
Identifying power supply issues (missing, failed, unplugged) and checking status with alarm/health commands.
Troubleshooting output module faults using status health:outputs_disabled and status health:output_modules.
Identifying causes of poor GPS receiver performance, including antenna and signal issues.
Diagnosing GPS tracking issues related to incorrect position, cable failure, or antenna problems.
Diagnosing issues with external references by checking status health and oscillator commands.
Troubleshooting communication issues related to LAN, USB, or external reference adapters.
Summary of active alarms and corresponding steps to resolve the issues.
Sets GPS antenna delay to ensure accurate timing outputs, offsetting propagation delay.
Manually sets system time when GPS is unavailable and steer source is Manual.
Sets GPS position mode (auto, manual, dynamic) to optimize timing performance.
Executes remote software upgrade via FTP or USB.
Displays system status variables; not modifiable or saveable.
General| Frequency | L1, 1575.42 MHz |
|---|---|
| Update Rate | 1 Hz |
| Velocity Accuracy | 0.1 m/s |
| Operating Temperature | -40°C to +85°C |
| Position Accuracy | 2.5 m CEP |
| Time Accuracy | 50 ns RMS |
| Protocols | NMEA 0183 |
| Power Supply | 3.3 VDC |
| Output | NMEA-0183 |
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