B&K Precision 4079 - Manual - Manual (Page 9)

3
Output Leakage
Approximately 10 mA can be present at the output
BNC connector when unit is powered on and the
output is off
Waveform
Characteristics
Harmonic Distortion (sine)
DC-20 kHz, -65 dBc
20 kHz-100 kHz, -60 dBc
100 kHz-5 MHz, -45 dBc
5 MHz-50 MHz, -35 dBc
Spurious (sine) DC-1 MHz < -65 dBc
Rise/Fall Time (square, pulse) < 6 ns (10% to 90%) at full amplitude into 50 Ω
Variable Duty Cycle
20% to 80% to 10 MHz (square)
40% to 60% to 30 MHz (square)
50% >30 MHz (square)
Variable Symmetry 10%-90% to 5 MHz (triangle)
Symmetry at 50% < 0.5 %
Linearity (triangle, ramp) <0.1 % of peak output (1 µHz to 250 kHz)
Aberrations < 3 % of p-p amplitude ± 50 mV
Pulse Width (period 10 μs - 0.1
μs)
20 ns to < ( Period -20 ns )
(10 ns resolution)
Variable Edge Time
(period 100 μs - 0.16 μs)
100 ns to Width/0.625 (50 % duty cycle)
10 ns resolution
Operating Modes
Continuous Output continuous at programmed parameters
Triggered
Output quiescent until triggered by an internal or
external trigger, at which time one waveform cycle is
generated to programmed parameters. Frequency of
waveform cycle is limited to 20 MHz in ARB mode and
10 MHz in DDS mode
Gate
Same as triggered mode, except waveform is executed
for the duration of the gate signal. The last cycle
started is completed
Burst 2-999,999 cycles
Phase -180 to +180 degrees with 0.1 degree resolution
Trigger Source
Trigger source may be internal, external or manual.
Internal trigger rate 0.01 Hz-1 MHz (1 µs – 100 s)
Modulation
Characteristics
Amplitude
Modulation
Internal
0.01 Hz-20 kHz sine , square or triangle waveform
variable modulation from 0% to 100%
External
5 Vp-p for 100% modulation, 10 kΩ input impedance
0.01 Hz – 50 KHz bandwidth
Frequency
Modulation
Internal 0.01 Hz-20 kHz sine wave, square or triangle
External
5 Vp-p for 100% deviation, 10 kΩ input impedance,
0.01 Hz – 50 kHz bandwidth
FSK
Internal 0.01 Hz to 1 MHz
External 1 MHz max.
Sweep
Characteristics
Sweep Shape Linear and Logarithmic, up or down
Sweep Time 10 ms to 500 s
Sweep Trigger internal, external, continuous or burst
Inputs and Outputs
Trigger IN
TTL Compatible
Maximum rate 20 MHz in ARB mode, 3 MHz in DDS
mode
Minimum width 20ns
Input Impedance10 kΩ nominal
Sync OUT
TTL pulse at programmed frequency, 50ohms source
impedance
Modulation IN
5 Vp-p for 100% modulation
10 KΩ input impedance
DC to >50 kHz minimum bandwidth
Marker Out Positive TTL pulse user programmable in Arbitrary