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ServSwitch Fiber Optic KVM Extenders
Control a CPU from
as much as 1 kilometer
away across safe, secure
fiber optic cable!
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technically speaking
The ServSwitch Fiber Optic KVM Extenders‘ keyboard
and mouse interfaces are standard PS/2® type interfaces, so you
can attach just about any standard PS/2 compatible keyboard and
mouse to the unit. To attach a PC/AT® style keyboard with a 5-pin
DIN connector to the extender, you’ll need a keyboard adapter (to
order, call our FREE Tech Support).
The extenders come with zip-style cable for making VGA
connections to your server; the audio/serial model comes with
serial and audio CPU cables, too.
For monitoring operation, the remote module has a seven-
segment display that continuously indicates link status. In addition,
Device Ready LEDs on both local and remote units inform you of
their operational status, so you can troubleshoot at either end.
The ServSwitch Fiber Optic KVM Extenders support all
VGA graphics cards and VGA resolutions up to 1280 x 1024 @ 75
Hz. You can use them to transfer RGB as well as VGA (RGBVH)
signals and, if necessary, convert signals to transfer RGB to VGA
or from VGA to RGB. All you have to do is make a simple jumper
adjustment on the extenders’ motherboards.
There’s no need to worry about the video getting horribly
distorted at either end of the fiber optic link. By default, the KVM
extenders operate with an automatic gain control (AGC) function
enabled. With AGC enabled, the gain of each color signal is fixed
to give colors the same white level (0.7 Vpp), and most video
problems are cleaned up automatically.
The seven-segment display aids with troubleshooting video
gain. For instance, if it shows an ”F,” you’ve adjusted the contrast
on the unit too high and, with AGC no longer possible, you need
to readjust the gain.
Extend serial data and stereo audio, too.
To add RS-232 serial and audio extension capabilities to your
KVM-over-fiber extender application, order the ACS335A-AS
version of the ServSwitch Fiber Optic KVM Extender. The circuit
boards on its local and remote units support transmitting
bidirectional stereo audio and full-duplex 19-kbps serial data
across the interconnecting fiber cable.
The serial ports on the ACS335A-AS support extending TX,
RX, RTS, CTS, DTR, and DSR serial signals (and, in some cases, RI
and DCD signals, for which a wiring adapter may be required.)
You can connect either one serial device requiring hardware
handshaking or—using breakout cable—up to three simple
2-wire serial devices (TX/RX only). No user adjustments are
required for the serial connection.
For multimedia capability, connect a set of speakers or a
headset or microphone to a workstation linked to the remote
unit. The extenders transmit stereo audio bidirectionally and
simultaneously across the fiber cable link. The extender local
unit sends audio digitally (as part of a 16-bit, 38.4-KHz signal)
for near-CD sound quality at the remote end of the fiber
interconnection.
In some applications, it may be necessary to switch off
the AGC so you can optimize video (to remedy a chromatic
aberration, for instance). For this, you just need to flip internal
jumpers and tweak the manual brightness and contrast
potentiometer dials on the rear panel of each unit. You can also
attenuate the optic budget to raise the optical loss to a value that
corrects any unstable image. (To do this, you need fiber pigtail
coupling connectors. For details, call our FREE Tech Support.)
The line-level interface is designed to receive output from
a sound card or other line-level source and connect to a set
of powered speakers at the remote console. No further setup is
required unless a microphone is connected to the remote unit (in
which case, you just need to ensure that your sound card is set up
and wired to provide sufficient amplification).
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T eC h S PeCS
Why Buy From Black Box?
Exceptional Value.
Exceptional Tech Support. Period.
Cable Required — 62.5/125-µm or 50/125-µm multimode fiber optic cable
with at least (3) or (5) strands and terminated with ST connectors
Optical Budget Total (Typical) — –5 dBm
Optical Center Wavelength — 850 nm
Resolution (Maximum) — 1280 x 1024 @ 75 Hz
Video Compatibility — RGBHV with 0.7-Vpp RGB signals plus TTL 5-V
horizontal/vertical synchronization signals; RGB with 0.7-Vpp RGB signals
with the G signal carrying (composite) synchronization signals
CE Approval — Yes
Recognize any of these situations?
• You wait more than 30 minutes to get through
to a vendor’s tech support.
Connectors — Local unit: Keyboard and mouse: (4) 6-pin mini-DIN F;
Monitor: (1) HD15 M, (1) HD15 F;
Interconnect: ACS335A: (3) ST;
ACS335A-AS: (5) ST;
ACS335A-AS local unit also includes: Audio: (2) 3.5-mm jacks;
Serial: (1) DB9 F (RS-232);
Remote unit: Keyboard and mouse: (2) 6-pin mini-DIN F;
Monitor: (1) HD15 F;
Interconnect: ACS335A: (3) ST;
ACS335A-AS: (5) ST;
ACS335A-AS remote unit also includes: Audio: (2) 3.5-mm jacks;
Serial: (1) DB9 M (RS-232)
• The so-called “tech” can’t help you or gives you
the wrong answer.
• You don’t have a purchase order number and the
tech refuses to help you.
ACS335A-AS
• It’s 9 p.m. and you need help, but your vendor’s
tech support line is closed.
Indicators — (1) 7-segment display on remote unit;
(1) Device Ready status LED on local and remote unit
Temperature Tolerance — Operating: 41 to 113°F (5 to 45°C);
Storage: -13 to +140°F (-25 to +60°C)
Humidity Tolerance — Up to 80%, noncondensing
Power —90–240 VAC, 47–63 Hz, autosensing, external, with IEC 320
connector and cord
According to a survey by Data Communications magazine, 90%
of network managers surveyed say that getting the technical support
they need is extremely important when choosing a vendor. But even
though network managers pay anywhere from 10 to 20% of their
overall purchase price for a basic service and support contract, the
technical support and service they receive falls far short of their
expectations—and certainly isn’t worth what they paid.
Size — Each unit: 1.7"H x 7.1"W x 5.2"D (4.3 x 18 x 13.2 cm)
Weight — Each unit: 2.6 lb (1.2 kg)
At Black Box, we guarantee the best value and the best support.
You can even consult our Technical Support Experts before you buy if
you need help selecting just the right component for your application.
Don’t waste time and money—call Black Box today.
Item
Code
ServSwitch Fiber Optic KVM Extender
with Serial and Bidirectional Stereo Audio
to connect an extender to the demarc, order…
aCs335a
aCs335a-as
ServSwitch Fiber Patch Cable, (5) Color-Coded 62.5/125-µm
Multimode Strands plus Spare, ST Male to Male
For PC
1-m
5-m
(3.2-ft.)
(16.4-ft.)
eFN235-1
eFN235-5
For indoor runs between extenders or demarcs, order…
Terminated Fiber Optic Breakout Cable, ST-ST
Custom Lengths
6-Fiber
eFN1006a-st
For outdoor runs between demarcs, order…
Loose-Tube Multistrand 62.5 Multimode Fiber Cables Bulk
What’s included
(Unterminated), Custom
For both aCs335a and aCs335a-as versions:
✦ Local unit
✦ Remote unit
6-Fiber
12-Fiber
eXN3006a
eXN3012a
Armored Loose-Tube Outside-Plant Fiber Cables, Bulk
(Unterminated) for Extreme Conditions, 1000-ft. (304.8-m)
✦ Zip-style VGA CPU cable, 6-ft. (1.8-m), with
HD15 male/female and (2) 6-pin mini-DIN male/male
✦ (2) power supplies and cords
✦ User’s manual
aCs335a-as also includes:
6-Fiber
12-Fiber
eXN4070a-1000
eXN4075a-1000
NOTE: Versions of these cables with other fiber counts are also
available. For more information, see blackbox.com, or call our
FREE Tech Support.
You may also need…
19" Rackmount Kit for ACS335A or ACS335A-AS
for 1 Extender
for 2 Extenders
✦ Serial CPU cable, 6-ft. (1.8-m), DB9 female/DB9 male
✦ Audio CPU cable, 6-ft. (1.8-m), stereo jack/
3.5-mm stereo jack
rMK235
rMK235-2
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