Specifications

Operating Manual SEFRAM 4451
M4451 A00
9
1.4 SPECIFICATIONS
The following specifications describe the instrument performance after a 20 minute warm-up period into a 50 ohms
load. All timing characteristics are measured at 50% of amplitude with fastest edges.
PULSE FUNCTIONS
Single - One pulse at each selected period up to 50MHz repetition
rate.
Double - One pair of pulses at each period up to 25MHz repetition rate.
Both pulses have the same selected width; the position of the second pulse
set by the delay control.
OPERATING MODES
Continuous - Output continuous at programmed period rate.
Triggered - Output quiescent until triggered by an internal, external, GPIB or manual
trigger, then generates one cycle at programmed period rate.
Gated - Same as triggered mode except pulses are output for the duration of the gated
signal. The last cycle started is completed.
Burst - Same as triggered mode for programmed number of cycles from 2 to 999,999
as set by the N-BURST function.
External Width - Trigger duration and rate sets pulse width and repetition.
TIMING CHARACTERISTICS
PERIOD
Range - 20 ns to 10 s (50MHz to 0.1Hz repetition rate).
Resolution - Up to 6 digits, limited to 100 ps.
Accuracy - ± 0.01 %
Jitter - < 0.01% of setting +20ps on Period, Width and Delay.
WIDTH