5.1.1
Manual Controls, Digital Control Logic, and RS-232 Interface
The remote control interface and control logic enables the control of the DPR300 from
software running on the host computer. Communication is via an RS-232 interface such as
the COM1 or COM2 ports on the remote computer. Front panel controls enable manual
control of instruments with the manual control option.
5.1.2
High Voltage Power Supply
The precision-regulated high-voltage supply provides power to the pulser. Precise voltage
regulation allows the DPR300 pulser to maintain constant pulse amplitude regardless of
changes in either the pulse repetition rate or other instrument controls. The voltage may be
adjusted from 100V to 475V or from 100V to 900V depending on the pulser voltage option
installed.
5.1.3
Pulser (Impedance / Energy / Damping)
The pulser generates an excitation pulse upon receiving a trigger event from a selected
source. There are four energy and two impedance values, and the single Energy and
Impedance control adjusts the pulse energy and the pulser impedance.
The damping control allows the damping impedance at the pulser output to be set to one of
sixteen discrete values.
5.1.4
Pulser Trigger Control
This control selects between the internal PRF oscillator or an external source applied to the
Trig/Sync connector as trigger sources for the DPR300 pulser.
5.1.5
PRF Oscillator
The internal PRF oscillator generates repetitive trigger pulses for the pulser subsystem under
the control of the PRF control.
5.1.6
Receiver Amplifier
Controls the amplification or attenuation of signals processed by the DPR300 receiver. The
receiver gain can be varied from -13 dB to +66 dB. The DPR300 receiver has an input
impedance of 500 ohms and is available in both 35MHz and 50MHz bandwidths.
5.1.7
Low Pass Filters
These filters are available for reducing the bandwidth of the DPR300 receiver. High
frequency bandwidth limiting can be used to improve the signal to noise ratio for
中国代理商-长沙鹏翔电子科技有限公司
地址：长沙高新区文轩路27号麓谷企业广场A4栋507 电话： 0731-84668116 传真：0731-84668126
9