Back to Basics SSP4 Specifikace stáhnout pdf (Strana 21)

17

SECTION 6.0

SPECIFICATIONS

DETECTOR (G5851-203)

Type

InGaAs PIN-photodiode

NEP

2x10

-14

W/

Hz

(typical) at –35 C

Detector Size

0.3mm diameter (1.0mm diameter optional)

Spectral Range (5% points)

900 to 1850nm

Shunt Resistance

>0.2G  (typical) at –35 C

Peak Response

1.2 A/W at 1750 nm

ELECTROMETER (AD8552)

Type

Current-to-Voltage

Bias Current

10 pA typical

Offset Voltage

1 V typical

Open Loop Gain

120db Min.

Closed Loop Gain (Rf)

1x10

9

Input Voltage Noise

0.32 µV(p-p) (0 to 1Hz)

Input Current Noise

2 f /Hz

1/2

(10Hz)

Maximum Output Voltage

2.7 V

A/D CONVERTER (LM231)

Type

Voltage-to-Frequency

Full Scale Frequency

10 Khz

Full Scale Input Voltages

-33 mV (100 SCALE)

-330 mV(10 SCALE)

-3.3V (1 SCALE give a 8KHz maximum output)

Linearity

<0.3%

Offset

<.5mV (adjustable to 0)

MICROCONTROLLER

Type

PIC16C73B-20I/SP

EPROM

4K x 14

RAM

192 x 8

I/O Lines

22

8-bit A/D

5-Ch

Operating Temperature

-40 to +80 C

POWER SUPPLY

Type

Switching

Output

+5V DC, 3A regulated

Input

100-120 VAC, 50-60 Hz, 0.4A

Output Connector

2.1mm Power Plug, 6’ cord

EYEPIECE

Focal Length

25 mm

Type

Ramsden

Reticule Illumination

Green LED

Field of View (80 inch FL)

0.4 degrees

MECHANICAL

Body Material

Aluminum 6061-T6 alloy

Finish

Bright Dip Black Anodized

Overall Length

9 inches (tip to tip)

Weight

2 lbs. 14 oz.

Telescope Coupler

1.25 inch (standard)

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