6. Specifications

A/D Converter

12-Bit Version

16-Bit Version

Acquisition + Conversion

2 ms + 8 ms

2 ms + 8 ms

Monotonicity

No missing codes

No missing codes

Integral linearity error

± 1 LSB

± 3 LSB

Differential linearity error

± 1 LSB

+3/-2 LSB

Full scale error

± 0.5 %

± 0.5 %

Aperture delay

40 ns

40 ns

Analog Input

 

 

Number of input channels

4 differential / 8 single-ended, expandable to 128

Input range

±10, ±5, ±2.5, ±1.25V

(DAQP-208 and DAQP-308)

 

±10, ±1, ±0.1, ±0.01V

(DAQP-208H)

Programmable gain

1, 2, 4, 8

(DAQP-208 and DAQP-308)

 

1, 10, 100, 1000

(DAQP-208H)

Maximum over-voltage

±30 V

 

Input impedance

100 MW (DC)

 

A/D Miscellaneous Specifications

 

Data FIFO depth

2048 samples

 

Scan list length

2048 entries

 

Scan speed

10 ms, 20 ms, 40 ms

 

Trigger source

Internal (Software) / External (TTL, Analog)

Trigger mode

Continuous / One-shot

 

Pre-trigger option

Programmable, up to the data FIFO depth

TTL trigger

0.8 V (low) / 2.2 V (high), Rising / Falling edges

Analog trigger

Threshold set in full A/D input range (± 10V)

 

Rising / Falling directions, 10 mV hysteresis

Sampling rate

0.006 Hz to 100 kHz (with internal clock source)

External clock rate

DC - 5 MHz

 

D/A Converter

 

 

Resolution

12-bit

 

Relative Accuracy

± 1 LSB

 

Bipolar Zero Error

± 7 LSB max

 

Differential Nonlinearity

± 1 LSB max

 

Full scale error

± 7 LSB max

 

DAQP-208/208H/308 Users Manual

59

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Image 59
Omega 308, DAQP-208, 208H user manual Specifications