Fault status indicators

The light patterns described below indicate the following fault conditions:

Light pattern

Description

Amplifier action

All lights are green.

This is the normal operating state

None.

 

of the amplifier.

 

The power light is amber

A “DC offset” fault has occured. A

The condition does not clear

and the channel lights

DC offset fault can occur if an

automatically.

are off.

excessive DC voltage is present

Simply to clear the fault, turn the

 

at the output of the pre-amp.

 

P1000 off for at least 30 seconds

 

feeding the P1000. Please see the

 

(using the switch on the rear of the

 

note below.

unit), then turn it on again.

 

 

 

 

If the fault fails to clear using this

 

 

method, or to verify excessive DC

 

 

offset voltage, turn the P1000 off

 

 

using the switch on the rear of the

 

 

unit, remove the interconnect leads

 

 

(with the P1000 switched off), then

 

 

turn the P1000 on again. The fault

 

 

should have cleared; if the power

 

 

light is still amber then your P1000

 

 

has developed a fault. Switch the

 

 

unit off and contact your dealer.

One or more channel lights

A short-circuit fault has occured.

The amplifier mutes the channel

are flashing amber/green.

The flashing light(s) represent

with the short-circuit. If the fault is

 

the amplifier channels with the

cleared, the amplifier will resume

 

short-circuit.

normal operation.

 

 

Note that audio must be fed to the

 

 

channel for the short-circuit to be

 

 

detected. For example, muting the

 

 

output using your pre-amp. will

 

 

make the fault appear to clear;

 

 

it is likely that the fault condition

 

 

will re-occur when the pre-amp. is

 

 

unmuted, however, unless further

 

 

action is taken.

One or more channel lights

An over-temperature fault has

The amplifer mutes the channel with

are amber.

occured on a channel with the

the fault. The amplifier stays in this

 

amber light.

state until the channel has cooled. If

 

 

this fault occurs frequently, ensure

 

 

that the amplifier has adequate

 

 

ventilation.

DC offset faults

A “DC offset fault” is not an amplifier fault, but a speaker protection mechanism. If the amplifier is supplied with a DC voltage (rather than the expected AC voltage) for an extended length of time, the coils in the attached speakers will eventually burn out (or, in extreme cases, catch fire). The P1000 can detect this condition, and cut the current to the speakers.

DC offset faults can occur intermittently in all set-ups, particularly if a tuner or satellite receiver is connected. If it occurs frequently or predictably, please contact your dealer for advice.

P1000

E-10

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3Com P1000 manual Fault status indicators, DC offset faults, Light pattern Description Amplifier action
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P1000 specifications

The 3Com P1000 is a notable device from the early days of networking that played a significant role in the evolution of communication technology. Known for its versatility and functionality, the P1000 was designed primarily for the small to medium-sized business market, offering a robust solution for network connectivity.

One of the main features of the 3Com P1000 is its high-speed data transfer capability, supporting both wired and wireless connections. This allowed businesses to enjoy fast internet access and enable seamless communication between devices. The P1000 supported Ethernet technology, which facilitated reliable network connections and provided users with the bandwidth needed for various applications, from simple file sharing to more complex data-intensive tasks.

In terms of wireless features, the P1000 incorporated advanced wireless networking technologies, ensuring that users could connect multiple devices without the need for extensive cabling. This wireless capability was particularly beneficial for businesses looking to enhance their mobility and flexibility in the workplace. The device often featured dual-band frequency options, enabling better performance in environments with high-density wireless usage.

Security was another core characteristic of the 3Com P1000. It included robust security protocols that helped protect sensitive data transmitted over the network. Features such as WPA2 encryption and built-in firewalls contributed to creating a secure networking environment for businesses, which is especially crucial in the digital age where cyber threats are prevalent.

Moreover, the P1000 came equipped with easy-to-use management tools, allowing IT administrators to configure settings efficiently. Its intuitive interface facilitated the setup of network devices, making it easier for businesses to deploy their networks without requiring extensive IT knowledge. These management tools provided insights into network performance, enabling proactive measures to be taken when needed.

In summary, the 3Com P1000 was a pivotal networking device that combined high-speed connectivity, wireless capabilities, strong security features, and user-friendly management tools. Its design considerations suited the needs of small to medium-sized businesses, paving the way for more advanced networking solutions in the years to come.
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