Racal Instruments 3155, User Manual, Page: 196 / 202

User Manual 3155
Specifications A-2
Modulation Frequency Range 2mHz to 100 KHz
Resolution 10 digits
Accuracy 0.1%
Peak Frequency Deviation DC to 50 MHz
Advance Automatic, triggered, gated or software command
Marker
Output and Level Same as SYNC output.
Position Fixed at carrier frequency
FM – Downloaded Arbitrary Waveforms
Description Sample clock can be frequency modulated by arbitrary
waveforms that are downloaded by the user
Modulation Source User waveform, any shape, 10 to 10000 waveform points
Modulation Sample Clock Range 1 mS/s to 2 MS/s
Resolution 7 digits
Accuracy 0.1%
Peak Sample Clock Deviation DC to 100 MHz
Advance Automatic, triggered, gated or software command
Marker
Output and Level Same as SYNC output.
Position Programmable for selected sample clock frequency
Waveform Download Rate 5Meg points per second
FSK
Description Current segment is sampled continuously. TTL low level
programs carrier sample clock, TTL high level programs
shifted sample clock frequency. Sample clock changes
coherently between frequencies. FSK operates on arbitrary
waveforms only.
Carrier Sample Clock Range 50 S/s to 100 MS/s
FSK Stimuli
External Front panel Trigger input BNC. Low level = carrier sample
clock; High level = hop frequency
Frequency Range From 10 MHz to DC
Internal Same as internal trigger range
FSK Delay Minimum 1 waveform cycle + 50 ns
Ramped FSK
Description Same as FSK except carrier sample clock ramps to shifted
frequency at a rate defined by the ramp time parameter. TTL
low level programs carrier sample clock, TTL high level
programs shifted frequency.