Remote-processing RPC-210 Manual de usuario descargar pdf (Pagina 58)

TECHNICAL SPECIFICATIONS SECTION 16

Page 16-1

CPU

Analog Devices ADU C812 operating at 11.0592

MHZ

TECHNICAL SPECIFICATIONS SECTION 16

Power Supply

Inputs: 5 ±0.25VDC or

6-16V

Current: 150 ma maximum.

Outputs not loaded.

20 µA maximum, lowest power mode

Currents measured without RS-232 attached.

Screw terminals provided for + 5V and external

high voltage input.

Memory

External RAM -

512K

RAM is battery backed up. Backup time varies with

usage and operating te mper ature. Backup time is

estimated at 4 to 6 years at 25°C, board not

powered. Backup time reduced by 50% when

operating at 50°C.

Program EPROM -

512K, Atmel type 29C040A. This is a PEROM and

does not need sector er ase. Howe ver, data is

written in 256 byte blocks.

Analog Input

Channels: 8

Resolution: 12 bits (about 1. 22 mV /coun t)

Range: 0. 1 - 5V (W11 installed) or 0.1 - 2. 5V (W11

removed).

Input impedance: 1M ohms

Conversion tim e: 1 m illi-second in Basic

Reference: Adjustable from about 4.8 to 5.2 volts or

preset to 2.5V

Analog Output

Channels: 2

Resolution: 12 bits

Range: 0.1 - 5V (W11 installed) or 0.1 - 2.5V

(W11 removed)

Output cur rent: 2 ma m aximum /channel, 4 ma total.

Response time: 2 ms

Real Time Clock

Type: DS1689

Accuracy: 1 min/month. This will vary

depending upon operating temperature.

Ac cura cy spe cif ied at 2 5°C

Interrupts: May generate an INT0 when J7-1 is

jumpered to J7-3. Also used to wake

up card from low power mode.

Battery backup: Battery backs up RAM. Connector for

external battery provided when special

ordered without battery.

Operating life: Four to 6 years, depending upon

temperature and humidity.

Reset

CPU resets when 5V supply falls below about 4. 65 volts.

Held in reset until supply rises to about 4.65 volts. Reset

time is about 300 ms.

LCD Display Port

Interfaces to 4 x 20 and 4 x 40 character displays.

Contrast adjustment provided.

Serial Ports

Type: RS-232 (COM 0) and RS-232, RS-422, or RS-

485 (COM 1)

Number:2

MECHANICAL

Size: 72.24 mm x 157.48 mm (2.80" x 6.20" )

Mounting: Mounting hole centers are 3.81 mm

(0.150") from each corner. Hole sizes are

4.445 mm (0.175") dia. in 6.35 mm

(0.250“ ) pad. Use 0. 250" standoffs for

mounting.

SHOCK AND VIBRATION

The RPC -210 board should withstand 5 g's r andom

vibration, 5 to 500 Hz if some moderate amount of

precautions are taken.

U6 is plastic and has re latively low m ass. If vibration is

continuous, you can secure the chip to the socket using

silicone rubber cem ent.

The batter y is soldered to the board. H owever , in

continuous vibr ation environments the welds could

break. Metal fatigue is possible in the bands connecting

the battery to the board. Pt a non-conductive piece

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Remote-processing RPC-210 Manual de usuario Pagina 58

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