PRESET COUNT - TM-9-4931-456-14-10039

3.3.4

(Cont'd)

C. Other Front Panel Controls (Cont'd)

INPUT MULTIPLIER - See Section 3.2.2 above.

MEM. SW - See Section 3.3.1, C.

COUNT ON/OFF Switch - Not used in this mode.

D. Rear Panel Connections

A (BNC) - Not used in this mode.

FLOWMETER Connector - Not used in this mode.

CONTROL Connector - See Section 3.3.1, D.

EXT. RESET SW or PULSE Pins - Provided for external reset as required. The SW terminal is

for mechanical or solid state closure to COMMON with a current requirement of 3 MA maximum

and a voltage drop of +0.4 V maximum. The PULSE terminal is for reset by a negative pulse.

See Section I for specification requirements.

GATE-SW Pin - Not used in this mode.

EXT. START Pin - Not used in this mode.

EXT. STOP Pin - Not used in this mode.

E. Rear Panel Controls

A/FLOW Switch - Not used in this mode.

EXT. T. B./INT. T. B. Switch - See Section 3.3.1,E.

3.3.5

PRESET COUNT

The PRESET COUNT mode of operation is actually a variation of a totalize mode. The input signal is

not fed directly to the totalizer and displayed as in a totalize mode, but is first prescaled (divided) by

the combined capacities of the thumbswitch preset system and the three-position multiplier toggle

switch. This prescaled input is then totalized and displayed by the counter. Control of the counting

process in this mode is identical to that for the TIME-EXT. (Interval) mode.

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