Spectracom NetClock 9489

Questions and Answers

A
Anthony BrooksAug 16, 2025
Why does Spectracom NetClock 9489 display the error message “Forbidden You don’t have permission to access/ on this server”?
- A
  Angela RomanAug 16, 2025
  This message appears when the Network Access Rules table has entries, but your PC's IP address isn't listed as an allowed IP. To fix this, either log in from a PC that is listed as an 'Allow From' in the table, or perform an unrestrict command to clear all entries from the Network Access Rules table, granting all PCs access to the Web UI.
D
doris90Aug 19, 2025
What to do if AC and/or DC indicator is red instead of green on Spectracom NetClock 9489 Other?
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  Terri RobertsAug 19, 2025
  If the AC indicator is red: 1. Make sure the AC power cord is properly connected to an AC outlet. 2. Ensure the AC power input switch is turned ON. 3. Inspect the two fuses located in the AC power module. If the DC indicator is red: 1. Confirm the DC power source is within the specified range at the DC power connector. 2. Verify that DC power is present at the input connector. 3. Check the DC input polarity.
K
kmartinezAug 22, 2025
What to do if one or more input references indicate 'Not Valid' (red) on Spectracom NetClock 9489 Other?
- F
  fcoleAug 22, 2025
  If one or more input references indicate 'Not Valid' (red), it means all available input references have been lost. To resolve this: 1. Ensure the Input Reference Priority table still has the desired inputs enabled, based on your preferred priority. 2. Verify that the desired input references are still properly connected to the correct input port on the NetClock. 3. If applicable, check the GNSS antenna installation.
M
Matthew AustinAug 26, 2025
What does it mean if the Spectracom Other LED is red?
- J
  James LewisAug 26, 2025
  A red LED indicates that the NetClock has just been powered on and hasn't synced to its references yet, or all available reference inputs have been lost, and the Holdover mode has expired. If the NetClock was recently powered up or rebooted with input references applied, allow a few minutes for the input reference to be declared valid (allow 35 – 40 minutes for a new install with GNSS input). Otherwise: 1. Ensure the Input Reference Priority table still has the desired inputs enabled, based on desired priority. 2. Verify that desired input references are still connected to the correct port of NetClock. 3. If applicable, verify the GNSS antenna installation, ensuring it has a clear view of the sky.
H
hholmesAug 28, 2025
What does it mean if the Spectracom Other LED is orange?
- A
  Autumn RileyAug 28, 2025
  An orange LED indicates the device is in Holdover mode because all available input references have been lost. To resolve this: 1. Ensure the Input Reference Priority table still has the desired inputs enabled, based on your preferred priority. 2. Verify that the desired input references are still connected to the correct port of NetClock. 3. If applicable, verify the GNSS antenna installation.
W
willie70Aug 31, 2025
How to troubleshoot Spectracom Other ICMP test failing?
- A
  Amber SandovalAug 31, 2025
  If the NetClock ICMP test is failing: 1. Verify a standard network cable connects NetClock’s Ethernet port to a hub/switch, or directly to a stand-alone PC. 2. Ensure NetClock's network settings are valid for the connected network/PC, meaning the IP address is on the same subnet as the other PC.
B
Benjamin BrownSep 3, 2025
What does it mean if the Spectracom NetClock 9489 LED is blinking orange?
- S
  Sabrina SullivanSep 3, 2025
  A blinking orange LED indicates that the GNSS Antenna problem alarm is asserted. To fix this: 1. Verify the GNSS antenna is connected to the NetClock GNSS input connector. 2. Check the antenna cable for an open or short circuit.
J
Jared KimSep 6, 2025
What to do if terminal emulator program does not display any data when the keyboard key is pressed on Spectracom Other?
- J
  John TorresSep 6, 2025
  If the terminal emulator program does not display any data when the key is pressed, it means that the NetClock is not powered up or there is a problem with the connection between NetClock and the PC. Using a multimeter, check the pins from one end of the serial cable to the other. Verify the cable is pinned as a straight-thru serial cable (pin 2 to 2, pin 3 to 3 and pin 5 to 5) and not as a null-modem or other pin-out configuration.
S
Shawn LopezSep 9, 2025
Why is Spectracom NetClock 9489 Other LED off?
- S
  Stacy ThorntonSep 9, 2025
  An off LED indicates that there are no valid Reference inputs available since power-up. To fix this: 1. Make sure the Input Reference Priority table has the desired inputs enabled, based on desired priority. 2. Make sure the desired input references are connected to the correct port of NetClock.
P
Paul RamirezSep 12, 2025
How to fix a blank LED (not lit) on Spectracom Other?
- R
  robert77Sep 12, 2025
  A blank LED indicates that the NetClock has no AC and/or DC input power applied. To resolve this: 1. Verify AC power is connected to an AC source and the AC power switch is ON. 2. Verify DC power (within the correct voltage range, as stated on the DC connector) is applied to the DC power connector.

Summary

Product Description

1.5 Inputs & Outputs

1.8 NetClock 9483-Available Option Modules

1.9 The NetClock Web UI

Introduction to the NetClock Web User Interface and its capabilities.

1.10 Specifications

Technical specifications for the NetClock 9483 base model.

SETUP

2.1 Overview

2.4 SAFETY

Important safety information and precautions for installation and operation.

2.5 Mounting the Unit

2.6 Connecting Supply Power

Details on AC and DC input power systems to the NetClock unit.

2.7 Connecting the GNSS Input

2.8 Connecting Network Cables

Guidance on connecting network cables for basic network connectivity.

2.10 Powering Up the Unit

Steps for powering up the NetClock unit after installation.

2.11 Setting up an IP Address

Steps to assign an IP address for network accessibility.

2.12 Accessing the Web UI

Instructions on how to access the NetClock Web User Interface.

2.13 Connecting Reference Inputs and Network Interface

2.14 Configuring Network Settings

Configuration of network settings for Web UI access via static or DHCP IP.

2.15 Configuring NTP

Configuration of Network Time Protocol (NTP) and Simple Network Time Protocol (SNTP).

2.16 Configuring Input References

How to access and configure settings for input references.

2.17 Configuring Outputs

MANAGING TIME

3.1 The Time Management Screen

3.2 System Time

How NetClock maintains and uses System Time for various outputs and logs.

3.3 Managing Input References

3.4 Holdover Mode

3.5 Managing the Oscillator

SYSTEM ADMINISTRATION

4.1 Powering Up;Shutting Down

4.2 Notifications

4.3 Managing Users and Security

Managing user accounts, passwords, and authentication methods for security.

4.5 Quality Management

4.6 Updates and Licenses

4.7 Resetting the Unit to Factory Configuration

Procedures to reset NetClock configurations to factory defaults.

APPENDIX

5.1 Troubleshooting

Information to help troubleshoot failure symptoms.

5.2 Option Modules

5.3 Command-Line Interface

5.4 ASCII Time Code Data Formats

5.5 IRIG Standards and Specifications

5.6 Technical Support