Science Workshop
®
750
Interface
012-06772A
6
Limited Warranty
PASCO scientific warrants the product to be free from
defects in materials and workmanship for a period of one
year from the date of shipment to the customer. PASCO
will repair or replace, at its option, any part of the product
which is deemed to be defective in material or
workmanship. The warranty does not cover damage to the
product caused by abuse or improper use. Determination of
whether a product failure is the result of a manufacturing
defect or improper use by the customer shall be made solely
by PASCO scientific. Responsibility for the return of
equipment for warranty repair belongs to the customer.
Equipment must be properly packed to prevent damage and
shipped postage or freight prepaid. (Damage caused by
improper packing of the equipment for return shipment will
not be covered by the warranty.) Shipping costs for
returning the equipment after repair will be paid by PASCO
scientific.
Address:
PASCO scientific
10101 Foothills Blvd.
Roseville, CA
95747-7100
Phone:
(916) 786-3800
FAX:
(916) 786-8905
email:
web:
www.pasco.com
Specifications
Power:
12 VDC to 20 VDC at 2 A, 2.1 mm jack
Primary computer connection:
SCSI, 8-bit data width and a MDB50 female connector
Internal active termination provided
Alternate computer connection:
Serial RS-232 with an 8-pin MDIN female connector
19.2K bits/s, 1 start bit, 8 data bits, 1 stop bit
Digital Channels:
4 identical digital input/output channels
TTL compatible input/output levels with 8 mA
maximum drive current
maximum input logic transition time: 500 ns
Electrostatic Discharge (ESD) protected inputs
assuming the human body model standard, Mil-Std-
3015.7
edge sensitive and sampled at 10 KHz (100
m
s). (1
m
s
resolution for the Motion Sensor)
Analog Input Channels:
3 identical channels with differential inputs and
1 M ohm impedance
+/-10 V maximum usable input voltage range
(+/-12 V absolute input voltage range)
ESD protected input similar to that of the digital
channels
3 voltage gain settings on each analog channel:
1, 10, and 100
small signal bandwidth up to the ADC: 1 MHz for a
gain of 1, 800 KHz for a gain of 10, and 120 KHz for a
gain of 100; input amplifier slew rate: 1.2 V/
m
s (The
actual bandwidth is determined by the sampling rate of
the ADC.)
Analog-to-Digital Conversion:
5 input sources for the 12-bit ADC: channels AC and
analog output voltage and current.
voltage resolution at the ADC input: 4.88 mV
(.488 mV at a gain of 10, 0.049 mV at a gain of 100)
current measurement resolution: 244
m
A, where each
volt measured represents 50 mA
offset voltage accuracy < +/-3 mV. (For measuring
full-scale voltages (or 1 V with a gain of 10, etc.) the
total error will be less than +/-15 mV, accounting for
the gain error in the input amplifier.)
sample rate range: once every 3600 seconds 250 KHz
(The conversion time between consecutive channels in
a burst is 2.9
m
s.)
8X oversampling for improved accuracy for sample
rates < 100 Hz.
Analog Output:
DC value ranges: -4.9976 V to +5.0000 V in steps of
2.44 mV
accuracy at the DIN connector: (+/-3.6 mV +/-0.1%
full scale)
peak-to peak amplitude adjustment ranges for AC
waveform:
0 V to +/-5 V in steps of 2.44 mV
AC waveform frequency ranges:
1 mHz (0.001 Hz)50 KHz, +/-0.01%
maximum amplified output at the banana jacks: about
300 mA at +/-5 V, current limited at 300 mA +/-12 mA
