User manual

DEI PVM-4210
Document Number 9100-0201 Rev 8
 Directed Energy, Inc. 2000-2002
Page 6
3.0 Specifications
The pulser will meet or exceed the following specifications. All specifications are
measured into a 50pF load connected to each of the two outputs with 12”
(~30cm) of Belden 8218 (75Ω) coaxial cable :
OUTPUT PULSE ELECTRICAL CHARACTERISTICS (Specifications Apply To Both Output Channels)
Output Voltage
0 to +950V ±5V (Channel 1), 0 to –950V ±5V (Channel
2)
Output Voltage Adjustments Screwdriver-adjustable potentiometers, End Panel
Pulse Width <40ns to DC measured FWHM, controlled by input gate
Pulse Rise And Fall Time
≤15ns, 10%-90%
Pulse Recurrence Frequency Single Shot to >20KHz continuous, 5MHz burst,
controlled by input gate
(1)
Pulse Droop <1%
Over/Undershoot <5%
Jitter <1ns Shot-to-Shot
Throughput Delay (Delay from leading edge of input
gate to leading edge of output pulse)
93ns typical
Maximum Duty Cycle Continuous
Maximum Average Power (Per Channel) 4W
(1)
Pulse Output Connectors SHV, End Panel
Output Cables
12” (~30cm) Belden 8218 75Ω Coaxial Cable
GATE
Gate Source External
Gate Input
TTL into 50Ω
Gate Rise Time <20ns
Gate Connector DSUB, End Panel
GENERAL
Support Power 24VDC to 28VDC @ 600mA Maximum Current
Dimensions (Excluding Connectors) 5.5”W x 11”L x 1.75”H (140mm W x 279.5mm L x
44.5mm H )
Weight (Approximate) 41 Ounces (1.16 kilograms)
Specifications subject to change without notice
(1)
The power dissipated in each channel of the PVM-4210 when driving a
capacitive load is defined by the formula CV
2
F, where C is the total load
capacitance, including the capacitance of the load, interconnect cable, and the
internal capacitance of the PVM-4210, V is the pulse voltage, and F is the pulse
repetition frequency (or the total pulses per second). (For these calculations, the
internal capacitance of the PVM-4210 is 125pF, and Belden 8218 cable is
21.5pf/foot.) Given the maximum power supply capability of 4W (4mA) per
channel, the maximum load capacitance, frequency and/or voltage at which the
PVM-4210 can operate can be approximated using this formula. At lower load
capacitances and/or voltages less then 950V, the PVM-4210 can operate at