Specifications

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)