Teledyne 6400A Instruction Manual page 52

TAI Model 6400A SO
Only one of the following range choices can be active at any one time.
There are 3 range choices:
1. Single Range
Auto Range
2. Dual Ranges
5.3.4.1 Single Range
This range option selects a single range for both output channels (REC, DAS) of the 6400A. To
select Single Range press SETUP-RNGE-MODE-SING, then press ENTR. To set the value for the
range press SETUP-RNGE-SET, and enter the full scale range desired from 50 ppb to 20,000 ppb,
then press ENTR.
5.3.4.2 Auto Range
Auto Range allows output range to automatically range between a low value (RANGE1) and a
higher value (RANGE2). When the instrument output increases to 98% of the low range value, it
will Auto Range into Hi range. In Hi range, when the output decreases to 75% of low range, it will
change to the lower range. This is only one low range and one high range for all outputs. The Hi
range mode is signaled by a bit on the STATUS option, see Table 6-3. If you select a Hi range that
is less than Low range, the 6400A will remain locked in Low range and behave as a Single Range
instrument.
To set up Auto Range press SETUP-RNGE-MODE-AUTO, then press ENTR. To set the values
press SETUP-RNGE-SET. The 6400A will prompt you for Low Range, then Hi Range which is the
lower and upper ranges of Auto Range. Key in the values desired, then press ENTR.
Once desired range is selected, then 6400A should be calibrated for each range entered. (Refer to
Section 7.9 for Calibration Procedure.)
Analyzer Operator Manual, 02164, Rev. G
2
NOTE
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