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PCM-2 Manual.pdf - Voss Associates

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Next, press the control knob to obtain a password prompt. Instead of the normal<br />

"1287" password, enter a value of "9999". The old and new zero values will be<br />

displayed, and the new value will be stored in non-volatile memory.<br />

Reconnect the exhaust hose and return the instrument to service. Make sure and<br />

re-adjust the operating pressure any time the pressure sensor zero has been set.<br />

Gas lVIanager Board<br />

Parts List<br />

The following table lists the electronic items incorporated in the Gas Manager<br />

Board and should contain any part necessary for normal electronic repair. Unless<br />

otherwise specified, call outs of manufacturers and manufacturers' part numbers<br />

are to be considered typical examples only and not restrictions against using<br />

equivalent parts with the same operating characteristics. When ordering parts<br />

from Eberline, specify model number, serial number, reference designation, value<br />

and Eberline part number, or a word description if the part has no reference<br />

designation. Eberline will automatically substitute equivalent parts when the one<br />

called out by the manufacturers' part number is not available.<br />

Gas Manager Board., YP11582000<br />

Reference<br />

Designation<br />

Part<br />

Name<br />

Part<br />

Description<br />

Al I.C. Microprocessor<br />

Manufacturer and<br />

Part Number<br />

-<br />

Intel<br />

P80C51FA<br />

Eberline<br />

Part Number<br />

ICCMAC51FA<br />

A2 I.C. Octal Buffer (Any)<br />

74HC373<br />

ICHCA74373<br />

A3 I.e. 32K x 8 EPROM<br />

(Programmed)<br />

A4 I.C. 32K x 8 RAM<br />

Static CMOS<br />

A5 I.e. 3-to-8 Line<br />

Decoder<br />

A6 I.C. 2 Channel, 10 Bit AID<br />

Converter<br />

Consult<br />

Eberline<br />

NEC<br />

D43256AC-10L<br />

(Any)<br />

74HC138<br />

Linear Technology<br />

LTC1091CN8<br />

Consult<br />

Eberline<br />

ICCM43C256<br />

ICCMAHC138<br />

ICCM 109 1<br />

A7<br />

Encoder!<br />

Switch<br />

Rotary Shaft<br />

Grayhill<br />

61 C22-0 1-04-02<br />

SWMI50<br />

A8 I.e. Serial EEPROM<br />

lK-bit CMOS<br />

SGS-Thomson<br />

ST93C46AB<br />

ICCMA93C46<br />

A9 Transducer 0-5" H 2 0 Pressure Microswitch<br />

164PCOlD76<br />

MTFM36<br />

<strong>PCM</strong>2.MANI REV AI April 1995 17-77

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