5
Hardware Setup
The hardware setup process is as simple as making connections from the SDR-1000 enclosure to the
hardware necessary to run the radio (power supply, antenna, parallel port, and sound card). Refer to the
numerical callouts in Figure 3 below for the location of all radio connections.
Make sure the power switch on the front panel of the enclosure is in the Off (down – “O” on some models)
position. Connect the power supply negative (1) and positive (2) leads to the black (--) and red (+) power
supply connectors respectively. Ensure that correct polarity is maintained as reversing the cables can cause
damage to the unit. The power supply must provide 13.8VDC at 25A (nominal) for the 100W transceiver
and 1.5A for the 1W transceiver respectively.
Make a low impedance connection to earth (RF) ground (8) to properly protect the unit.
Connect the PC parallel port to the parallel connector (10) on the enclosure. Use a 25-pin, male-to-male
parallel cable that has all 25 pins connected straight through. These are called RS-232 cables by some
manufacturers. Both parallel and audio cables are available from FlexRadio Systems. Make sure the
connection is firm as a partial parallel connection can cause sporadic frequency tuning and filter selection.
Note: FlexRadio Systems distinguishes between recommended, legacy and
unsupported sound cards. Recommended cards are actively supported
and used for system development. Legacy cards are those cards that were
previously recommended and are now only passively supported.
Unsupported cards include all other sound cards. From time to time
FlexRadio Systems will adjust a sound card’s designation; the most up-to-
date information is available on our website.
FlexRadio Systems currently recommends two sound cards for use with the SDR-1000: The M-Audio™
Delta-44 is the recommended PCI interface and the Edirol FA-66 is the recommended Firewire (1394)
interface card (ideal for laptop connection). Each of these professional grade sound cards offers multiple
inputs and outputs which allows us to mix separate monitor and radio outputs as well as leave the radio and
microphone connected to the inputs. The audio quality of these recommended cards is also superior to any
of our legacy (previously recommended) cards as these legacy cards were all consumer grade. Please refer
to the charts and tables on the specifications page of the website that show the superior dynamic range and
noise performance of our recommended cards. This is a clear-cut example of professional quality audio
12 ď›™FlexRadio Systems
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