Linear Technology DC1513 Quick Start Manual page 2

DC1513
generator with sufficient filtering to avoid degrading
the performance of the receiver.
4. Apply an LO input signal to the board. Note that
the difference in frequency between this signal and
the RF signal will be the IF frequency resulting at
the IF filter and ADC input.
NOTE. Even a high-quality signal
synthesizer will still have noise and
harmonics that should be attenuated
with a low-pass or band-pass filter. For
good-quality high order filters, see TTE,
Lark Engineering, or equivalent.
Signal
Generator
HP 8644B or equiv.
Signal
Generator
HP 8644B or equiv.
RF Signal Generator
(HP 8644B) or other
low phase noise
clock source (e.g. DC1216)
OTHER BOARD CIRCUITRY
Device U1 is an EEPROM device that is used by the PScope software to identify the board and apply the correct set-
tings for the data collection.
2
BPF
BPF
BPF
Figure 1. Proper Measurement Equipment Setup
5. Observe the ADC output with demo circuit
DC890B, a USB cable, a Windows computer, and
Linear Technology's PScope data processing soft-
ware.
Power Supply
(5.0V @ 0.5A, 3.0V @ 1.0A)
To DC890B