570 amplifier

gain range

from1Arrive1500Continuously adjustable.

pulse shape

When the peak time is equal to2.2τ，0.1% level when the pulse width is equal to the peak time2.9times, it is semi-Gaussian in all ranges.

integral nonlinearity

for2 μsplastic surgery time,<±0.05％。

noise

Use2 μsShaping and coarse gain ≥100, the unipolar output referred to the input<5 μV。

temperature instability

Gain ≤±0.0075％/°C，0to50°C。 DC level ≤±50μV/°C，0to50°C。

bipolar cross swimming

for50:1dynamic range, in0.5 μsWhen≤±3 ns, includingORTEC 552single-channel analyzer.

Overload recovery

For unipolar outputs, when using gain, the2.5within a non-overload pulse width fromX300Overload returns to rated output2Within %.

spectrum broadening

for⁶⁰Co 1.33 MeVgamma ray, in1to75,000count/seconds (unipolar output,2 μsshaping) input count rate range, at full scale85Normally at %<16％ FWHM。

spectral shift

for⁶⁰Co 1.33 MeVGamma rays, from1Arrive75,000count/seconds (unipolar output,2 μsshaping) is measured at full scale85%, the peak displacement is usually<0.024％。

Fine-tune gain

10Precision potentiometer with dial, continuously adjustable direct-reading gain coefficientX0.5toX1.5。

Coarse gain adjustment

6bit switch selectable gain coefficient is20、50、100、200、500and1kfeedback resistor. Printed circuit board (PWB) is selectable with a jumper onX0.1Attenuation.

Input polarity

Locking toggle switch optionalPosorNegEnter pulse polarity.

Forming time

6bit switch can be in0.5、1、2、3、6and10 μsSelect the time constant for the active pulse shaping filter.

PZ ADJ

A screwdriver adjustable potentiometer is used to set the pole-zero cancellation from40 μsto ∞ to compensate for input decay time.

BLR

3The bit lock toggle switch selects the control source for the gated baseline restorer discriminator threshold from the following three positions:

• automatic BLRThe threshold is automatically set by internal circuitry to a level that is a function of signal noise.
• PZ Adj BLRThe threshold is determined by the threshold potentiometer.BLRThe time constant is also greatly increased to facilitate adjustmentPZ;for less than5000count/second count rate and/or longer forming time, this location can give noise.
• threshold BLRThe threshold is set manually using the threshold potentiometer.

DC

Screwdriver adjustable potentiometer for setting unipolar output DC level; range ±100 mV。

Input

front panelBNCThe connector accepts positive or negative pulses with a rise time of10to650 ns, the decay time is40 μsto ∞,Z_in ≅1000Ω DC coupling; linear value10 V;value20 V。

Unipolar

front panelBNCconnector,Z_o <1Ω, with short circuit protection function; in time,0to+10 VFull-scale linear range; active filter shaping; DC recovery; DC level adjustable to ±100 mV。

Preamp power supply

rear panel standardORTECPower connector.Amphenol 17-10090, with allORTECPairing of onboard and offboard power cords on the preamplifier.

Busy output

Z_o <10Ω rear panelBNCThe connector provides for the duration of the input pulse exceeding the baseline restorer discriminator+5 Vlogic pulse.

Required power supply

+12 V, 60 mA; -12 V, 30 mA; +24 V, 80 mA; -24 V, 85 mA。

weight

Net weight 1.5Kilogram (3.3pounds). Shipping weight 3.1Kilogram (7.0pounds).

Size

Standard single widthNIMmodule3.43 X 22.13cm (1.35 X 8.714inches), consistent withDOE/ER-0457Trequirements.

Model

Description

570

amplifier