PC-414

®®

DATEL, Inc., Mansfield, MA 02048 (USA)

• Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • Email: sales@datel.com • Internet: www.datel.com

9.

5 MHz sampling on PC-414D requires an external clock.

Maximum on-board sampling is 4 MHz.

10. Input impedance is shown with power on. Impedance

with power off is 1.5 k

Ω or less.

11. PC-414G acquisition time is 350 ns to ±0.01% of FSR.

12. All channels in simultaneous sampling.

13. PC-414J and L bipolar input is user-selectable ±5 V or

±10 V per channel (default). Total full scale error over

temperature range is ±4 LSB maximum. Total zero/offset

error over temperature range is ±2 LSB maximum.

Monotonicity: no missing codes over temperature range.

14. Avoid mixing external triggers which are a close submultiple

of the internal A/D start clock to prevent lost samples.

15. Models PC-414D, H, K, and M use a single channel

12-bit A/D converter with ±5 V inputs. An external A/D

clock is required above 4 MHz and the 82C54 timer must

be bypassed. 10 MHz sampling may continue until the

FIFO memory is full.

16. Input polarity. Some models are fixed as bipolar only

whereas others are user-selectable unipolar or bipolar.

Still others require separate model numbers.

17. Models F, G, J, K, L, M, N, and P use one A/D converter

per channel.

18. The customer must use shielded cables to insure EMC

compliance.

19. A/D-per-channel boards (models F, G, J, K, L, M, N, P)

may be operated in “software differential” mode. Two

A/D’s are applied to the high and low legs of a single

differential input channel. The two data values are then

algebraically subtracted, either on the fly in real time or

after all samples have been stored. Channel capacity in

“software differential” is one-half the number of single-

ended channels.

This technique offers excellent bandwidth, high common

mode rejection and optional mix of single-ended and

differential channels.

NOTES

1.

Resistor-programmed gain from x1 to x100 is available

on PC-414E with increased settling delay at higher gain.

2.

Total throughput includes MUX settling time after

changing the channel address, S/H acquisition time to

rated specifications, A/D conversion, and FIFO transfer.

Total throughput is not delayed by host software

whenever the FIFO is not full.

3.

THD test conditions are:

A. Input freq.

500 kHz (414F)

200 kHz (414B,E,G)

50 kHz (414J,L,M) 1 MHz (414D,K,N,P)

2 MHz (414H)

B. Generator/filter THD is -90 dB minimum.

C. THD computed by FFT to 5th harmonic.

Vin

D. Inputs are half full scale less 0.5 dB. No channel

advance.

E. A/D sample rate = 500 kHz (414B,E,G), 4 MHz (414D,K),

2 MHz (414F), 10 MHz (414H), 250 kHz (414J),

190 kHz (414L,M), 2.5 MHz (414P)

4.

The rates shown for sequential sampling are the

maximum A/D converter start rates and include MUX

sequencing and settling. For example, if four channels

of the PCI-414E were scanned, the maximum sample

rate on any one channel would be 2 µs x 4 channels =

8 µs (125 kHz per channel).

5.

For fastest response on the analog comparator trigger,

keep the reference voltage near the trip input voltage. To

avoid overload recovery delays, do not let the trip input

(or any other analog input) exceed ±10V.

6.

The input impedance of 10 M

Ω minimum avoids attenuation

errors from external input source resistance. For many

applications, an in-line coaxial 50

Ω shunt, inserted

adjacent to the front connectors, is recommended to

reduce reflections and standing wave errors.

7.

Allow 20 minutes warmup time to rated specifications for

models PC-414B,G,M,N.

8.

A 25-pin DB-25S connector is used for the PC-414E, J,

and L.

log10

(

)

THD = 20

Multipurpose Connector

5th SMA user-selectable for:

[Note 8]

1. Pacer trigger input

2. Analog threshold

comparator input

Operating Temp. Range

0 to +60°C, forced cooling

recommended.

Storage Temp. Range

-25 to +85°C

Humidity

10% to 90%,

non-condensing.

Altitude

0 to 10,000 feet.

Power Required

+5V @ 3.5A max. from

ISA bus

Outline Dimensions

4.5 x 10.5 x 0.625 inches,

compatible to PC/ISA bus

85