Chapter Four: Functional Overview
The [SETUP] Key
45
How To Change Channels
If you are using the 670 instrument with a single pressure transducer, the active channel will
always be Channel 1. Pressing the other channel number keys will have no effect.
Channel Selection Using the 274 Multiplexer
If you are using the 670 instrument with a 274 multiplexer, you can display data from Channels 1
through 3, individually. To select the active channel, press the appropriate channel selector key
on the front panel. Be sure that the
CHANNEL SELECT
switch on the 274 multiplexer is in the
REM
position.
The [SETUP] Key
The [
SETUP
] key enables you to configure the operational parameters of the 670 instrument.
Display Size
Ch 1
760 Torr
Display Size 5½
The 670 instrument displays the pressure reading as a 3½, 4½, or 5½ digit number. To set the
display size, turn the Adjust knob to toggle through the three options. This entry effects the data
format used to report data by the remote communication options.
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