INSTRUMENT MANUAL
VACUUM GAUGE MODEL MM200
160Phone:(215) 947-2500 fax:(215) 947-7464 e-mail:sales@televac.com web site:www.televac.com
MM-200_im REV M
Page 94 of 160
containing bits that correspond to any zeros that were out of range of the
zeroing commands. The range of values is from -90 to 165. The range of
values for atmosphere adjustment is from -127 to +127. The displayed values
are separated by spaces.
The data corresponds to the location of gauges that are serviced starting at
the lowest station number. Each 4A type sensor uses two data locations. The
first is for the "zero" offset adjustment, while the second data location is for
the atmospheric adjustment value.
Each 1E, 1F, 2A, 5A, 5B, or 5C require only one data location, and that's for
the "zero" adjustment.
The data positions are automatically assigned based upon the configuration
of the unit. For example if stations #1 and #2 have 4A sensors, then the first
location will be for the "zero" of station #1, the second location will be for the
atmosphere adjustment of station #1, the third location will be for the "zero"
adjustment of station #2, and the fourth location will be for the atmosphere
adjustment of station #2. Then if stations #3 and #4 have 2A
sensors, the fifth location would be for the "zero" of station #3, and the sixth
location would be for the "zero" of station #4 (since the 2A sensor does not
allow for an atmosphere adjustment).
In the above example, if there were no other sensors installed that can be
zeroed, then there would only be the six values displayed. They would be
followed by a combination of six zeros and ones (usually all zeros). There
would be a one in any of these locations where the corresponding zero or
atmosphere adjustment was outside of the maximum range of adjustment.
For example: "1Z 000 1A 010 2Z -90 2A 102 3Z 000 4Z 165 001001<cr>"
would show the offset values for six offsets, and show that offsets #3 and #6
were out of range. The first two stations are 4A's as they had both zero and
atmosphere offsets. The -90 means that the zero offset of station #2 had
reached the maximum range that could be corrected. The corresponding
error bit indicates that it actually went beyond the maximum range that can be
stored. Likewise, the zero offset went beyond the limit since its error bit was
also set. The 010 would be the atmosphere offset for station #1, and the 102
would be the atmosphere offset value for station #2. If the first four stations
were 2As, the example would be something like 1Z 000 2Z -90 3Z 000 4Z 165
0101.
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