| Why
do I need a UPS (uninterruptible power supply)? |
| |
If
you need optimum performance and longevity from your electronic
equipment and if you need a reliable short-term backup power
source in the event of a blackout, then you need a UPS to protect
your equipment.
 |
| What
is a "Smart" UPS? |
| |
The
real meaning of “smart” UPS is one, which has a built-in
microprocessor and an RS-232 interface port. In addition to
automatic shutdown capability, a "Smart" UPS is able
to monitor more operating parameters, such as: Input & Output
Voltage and frequency, Load Level, Battery level, and more.
|
| How
do I determine what size UPS to get? |
| |
UPSs
are sized by their volt-amp (VA) load. To calculate the VA load
of your system check the UL label for the operating voltage
and amperage drawn. Add the amperages of each component to be
powered by the UPS and multiply the number by the voltage (120V
for US applications). This number is your VA load and the minimum
size required. It is good idea to size your UPS at least 30%
larger than the minimum VA load to leave room for future needs.
|
| Should
I put a UPS at each workstation? |
| |
Yes,
it is a good idea because this is where the most recent work
is being done, and this data is most vulnerable to loss or corruption
in the event of power outage.
|
| Is
there any equipment I should not connect to my UPS? |
| |
In
general, you shouldn't connect a laser printer to your UPS because
a laser printer draws a tremendous amount of power and will
likely overload your UPS and cause the UPS fuse to blow. Most
of the office equipment, such as computers, monitors, fax machines,
and networking equipment, should work fine with most UPSs. Do
bear in mind that larger size monitors consume much more power
than smaller monitors and will likely reduce battery runtime
significantly. Also you should not connect a surge suppressor
at the output of UPS, in case the surge suppressor creates a
short circuit and damages your UPS.
|
| Why
do I need UPSMON (the power monitoring and automatic shutdown
software)? |
| |
During
a power interruption, a decision must be made when and if
to gracefully shutdown the computer system. On a computer
system that always has someone within earshot and eyeshot,
this is usually done manually – when the UPS kicks on during
a power failure, the administrator decides whether to ride
it out on battery power or to save files and close programs.
However, on an unattended computer system, nobody is around
to make that decision. In that case, during a power failure,
the UPS will kick on and run the computer system, but only
until its battery is depleted. Therefore, it is important
to have automatic shutdown software that will safely shut
down the computer system after a pre-configured time period
of when the computer receives a low battery signal from the
UPS. UPS monitoring and automatic shutdown software also can
broadcast power fail messages to network workstations, keep
an historical log of abnormal power conditions, and alert
the system to page the administrator.
|
| How
does my UPS conflict with other devices? |
| |
If
your mouse uses COM1 and your UPS uses COM2, the default hardware
interrupt (IRQ) settings for COM1 and COM2 are IRQ4 and IRQ3
respectively. If your modem on COM3 is also using IRQ3 there
will be a conflict with the UPS on COM2. Since serial devices
can not share a communication port or its hardware interrupt,
the interrupt for the modem must be altered. Check with the
modem manual to find out how to change the IRQ setting. Suggested
IRQ includes 5 and 10. If these two IRQs are not free in your
system, you can use IRQ7 since LPT1 is capable of sharing it.
|
| The
charge light (Yellow) on my King Office UPS is always illuminated.
Is this unit bad? |
| |
The
charging light indicator is normally illuminated on the King
Office Models (KOF-280, KOF-300S, KOF-500S).
|
| I
plugged the UPS into wall outlet, but there is no power from
the UPS. Why? |
| |
You
have not turned your UPS on. The power switch on King
Office Series UPS have button switch located on the top of the
unit and labeled "on/test". To turn the UPS on, depress the
button and hold it down until the green LED light " Line OK"
turns on and stay on. When the unit is activated, it performs
a self test for short period of time. During this process, the
Line OK light will turn off momentarily and the Backup LED will
turn on. After approximately 2 seconds, the Backup LED turns
off and the LINE OK LED will turn on and remain steady on.
|
| What
should I do with my non working UPS. The company I bought the
unit from is closed? |
| |
You
can call the RMA Department at Powercom at (714)632-8853 to
obtain an RMA number. You need to provide the technician information
regarding your device and a copy of the invoice.
|
| Why
did I get a "Modem not found" message? (internal modem) |
| |
Possible
IRQ conflicts.Most modern computer systems have two serial ports
on the backpanel. These are recognized by the computer as COM1
and COM2. A conflict occurs when the modem is configured on
either of these ports.To remedy this, set the modem up for COM3
with IRQ5, or COM4 with IRQ3. Availability of these ports/IRQs
depends on the configuration of the system.
|
| Why
does my mouse act erratically while attempting to use the modem?
(internal modem) |
| |
IRQ
conflict. Most serial mice use COM1 with IRQ4. If the modem
is configured for COM3 IRQ4, this will cause a conflict with
the mouse (also usingIRQ4). Typically this occurs after the
modem initializes, but may also occur upon installation.Set
modem for COM3 with IRQ5, or COM4 with IRQ3.
|
| Why
do I get excessive CRC errors during a Z-modem download at high
speeds? |
| |
This
can be caused by a number of factors. If the modem is external,
does the serial card have a 16550 UART? Lower Buffer size for
UART?
|
| |
|
|
What
type of computer is being used? Slower machines may not
be able to support high speeds effectively.
|
 |
Is
there a hard disk stacking/doubling program in use? This
creates a situation where the CPU is busy compressing
data to be written to hard disk when modem is sending
new data. The new data is then lost, creating CRC errors.
Is the modem's error correction/data compression turned
on?
|
|
General
remedy: Lower
the port speed. This will cut down on the data entering
the system, allowing for proper data management.
|
|
| How
do I enable error correction/data compression?
(V.42/V.42bis) |
| |
Use
the initialization String: AT&FE1L1V1&C1&D2S0=0S7=90
for most software. Also, make sure the software has RTS/CTS
turned on, XON/XOFF turned off, and Autobaud turned off. (This
option may be labeled Lock Port Speed, or Lock DTE speed, if
this is the case, turn it on.)
|
| What
causes Aborted downloads? |
| |
If
a download becomes inundated with errors, the host system may
terminate the download. If carrier is lost, the download will
abort.Download may also be aborted by the at user.
|
| Why
do I get a "No Dialtone" message? |
| |
Most
common cause is the phone cord not plugged into the proper jack
on the back of the modem. The cord should go between the telephone
wall jack and the LINE jack on the modem. If a phone is to be
used in conjunction with the modem, plug it into the PHONE jack
on the modem. Other causes areModem being used on a business
PBX system on which special code or other action is required
to get an outside line, bad phone cord.
|
| How
do I Disable V.42/V.42bis? |
| |
Sometimes
it is necessary to disable Error Correction/Data Compression
in order to use an on-line service. (Prodigy, America On Line,
Compuserve, etc.) If this is necessary, use the string AT&F.
This resets the modem to factory defaults. (No EC/DC)
|
| My
modem works in DOS, why won't it work in WINDOWS? |
| |
Most
commonly, the com ports in windows have not been configured
properly. To do this, go to the "CONTROL PANEL" in Windows.
Select "PORTS". Highlight the comport that the modem is set
for. Choose "SETTINGS". Adjust the baud rate as necessary, but
do not set the baud rate above 9,200 bps. Select "ADVANCED".
Choose the appropriate Base I/O Port Address and IRQ Settings.
Choose "OK". A "Your Windows COM Settings Have Changed...Please
Restart Windows to have these changes take effect." message
will appear if you have made significant changes. Select "RESTART
NOW". Your modem should now be recognized by Windows.
|
| Modem
cannot disconnect from the line? |
| |
If
the modem cannot disconnect after terminating the program using
the modem, the modem may be defective. Contact Tech Support
for advice at (714)526-5888.
|
