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dc1846af

DEMO MANUAL DC1846A

QUICK START PROCEDURE

Download the FracNWizard setup file at:

www.linear.com/FracNWizard

Run the FracNWizard setup file and follow the instructions

given on the screen. The setup file will verify and/or install

Microsoft .NET and install the FracNWizard. Refer to the

Help menu for software operation.

DC1846A Configuration

1. Connect a 100MHz reference frequency source (at J2)

and signal analyzers to RF+ and/or RF– (at J6 and/or

J7) using the SMA connectors (see Figure 1 and the

Typical DC1846A Requirements and Characteristics

table).

Be sure to terminate any unused RF output with 50Ω, or

poor spurious performance may result.

2. Choose the MUTE jumper setting:

JP1: GND/3.3V - MUTE position. Select GND to mute

the RF output, 3.3V to unmute.

3. Connect the GND, 3.3V, 5V banana jacks and the

V+VCO turret to a power supply and apply power (see

Figure 1 and the Typical DC1846A Requirements and

Characteristics table).

4. Connect the DC590 to the DC1846A with the provided

ribbon cable.

5. Run the FracNWizard application.

6. In FracNWizard, click File -> Load Settings and point

to the “LTC6947_100MHz.fracnset” file.

The red LED on the DC1846A should turn on indicating

that the loop is locked at 2415MHz.

Figure 3. FracNWizard Screenshot