REMOTE PROGRAM

1.1.9.2

REMOTE PROGRAM

A rear mounted 50 pin connector is provided which allows complete programmability of

mode selection, and preset thumbswitch and multiplier number. Programming is by means

of single line connection in the case of mode and multiplier, and by 1,2,4,8 BCD connections

in the case of the thumbswitch number.

1.1.9.3

External Time Base

A rear mounted BNC connector is provided to allow the user to introduce an external

frequency within the range of 100 Hz to 1 MHz as the basic time base clock frequency. The

sensitivity of the input is better than 1 Volt pk-pk with an input impedance of greater than 1

Kilohm. Maximum input without damage is 10 Volts RMS.

1.1.9.4

CONTROL Connector

The following control functions and connections are provided through the CONTROL

connector:

1.1.9.4.1 CHASSIS Ground

Same as earth ground connected to 3rd wire of input power connector.

1.1.9.4.2 COMMON

Internal logic ground.

1.1.9.4.3 EXT. RESET PULSE

Requires a 4 V negative pulse, 0.5 minimum duration or 1 minimum rise

time.

1.1.9.4.4 EXT. RESET SW

Contact closure to COMMON resets the internal logic of the Flow Indicator in an

identical manner to the front panel RESET pushbutton.

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