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dc1846af
DEMO MANUAL DC1846A
QUICK START PROCEDURE
The DC1846A is easy to set up to evaluate the performance
of the LTC6947. Follow the procedure below.
The DC590 and FracNWizard application are required to
control the DC1846A through a personal computer (PC).
DC590 Configuration
Place the DC590 jumpers in the following positions (refer
to Figure 2):
JP4:
EE – Must be in the EN position.
JP5:
ISO – ON must be selected.
JP5:
SW – ON must be selected.
JP6:
VCCIO – 3.3V must be selected. This sets the SPI
port to 3.3V operation.
Connect the DC590 to one of your computer’s USB ports
with the included USB cable.
FracNWizard Installation
The FracNWizard software is used to communicate with
the LTC6947 synthesizer. It uses the DC590 to translate
between USB and SPI-compatible serial communica-
tions formats. It also includes advanced PLL design and
simulation capabilities. The following are the FracNWizard
system requirements:
• Windows Operating System: Windows XP, Windows
2003 Server, Windows Vista, Windows 7
• Microsoft .NET 3.5 SP1 or later
• Windows Installer 3.1 or later
• Linear Technology’s DC590 hardware
Figure 2. DC590 Jumper and Connector Locations
JP6
jumpers
J4, ribbon
cable
connection
to the
DC1846
JP5 jumpers
JP4
jumper
J3, USB
connection
to PC
