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107
12V
21X
TNDEX
* Modes,
Modes
1,(l
421
1O-2
Probe
101
example
7-11
Probe finstruction
111
9-5
B
exampfes 7-2,7-12
ov-3
207 Relative Humidity
Probe finstruction
12]
9-6
Prograffiing
example
7-3
227 Soil Moibture Block
Prograrnming
example
7-10, 8-3
3
Wire Half
Bridge finstruction 71 9-4
Progra
4
Wire
Full
6
Wire Full
Average - flnstruction 711 11-1
Programming
example OV-l3
Computing
running
8-1
Battery power options
Alkaline
D
cells
14-2
External
14-4
Lead acid
pack
14-3
Solar panels with
21XL
14-4
Vehicle power
supply
14-4
Battery Voltage -
|nstruction
101 9-5
Baud rate
Definition A-1, 6-4
Output
Codes 4-1,4-2
Binary
telecommunications
C-1
Block Move -
finstruction
54]
10-4
Programming
examples
8-1,
8-G
Branching,
LogicalAND or
OR
3-4
Bridge measureme.nts 9-3
3
Wire Half Bridge 100 ohm
PRT 7.6
4
Wire Full Bridge (Pressure Transducer) 7-8
4
Wire Full Bridge 100 ohm
PRT
7-7
4
Wire Half Bridge 100 ohm
PRT
7-5
6
Wire Full Bridge (Lysimeter) 7-9
Comparison
of bridge measurement
instructions 13-17
Diagram of
bridge measuring
circuits
13.16
AC
excitation
13-19
Bridge
Transform - flnstruction 591 10-6
Programming
example
7-11
Burst Measurement finstruction
23]
9-9
C20
Cassette
Interface
4-5
Cables/Leads
Avoid PVC insulated
conductors
13-9
Lead length on signal settling time,
Effect
of
13-3
Tipping bucket rain gauge with long leads
programming
example
7-4
Calibration procedures for
21X
14-G
Cassette
recorder
4-4
Cautionary
Notes vii
cD16
SDM-CD16 9-14
Channels
Analog
OV-2
Checksum
5-2
example
7-6
flnstruction
6]
9-4
flnstruction
9]
9-5
example
7-8
Prog
5th
Order
Instruction 55] 10-5
example
7-11
Ai
A*X
+ B Scafing
Array
flnstruction 531 1G4
Ao4 SDM-Ao4 8-5,9-14
ABS(X) flnslruction 431
1()-3
Absolute Valfre,
Taking
10-3
AC excitatiotl, Resistance measurements
requiring
13-19
AC Hall
Brid$e
$nstruction
51
9-3, 13-19
Programfning
examples
7-11, 8-3
AC Noise, Elfminating
13-1
Activate
SeriflData Output
[lnstruction
96]
4-1,
12-6
l
Alkaline batt4ry power
supply 14'2
AM416 Input MultiPlexer 8-3
Analog
Inputb
OV-2
C
Analog
Output [lnstruction
21]
OV-3,
9'8
SDM-Ao{ 8-5,9-14
Analog
to Digital (A/D)
conversion
13'1
AND construption,
Logical
3-5
Anemometei (Photochopper output)
Programfning
example
7-3
ASCII
Programllisting
(.D Mode) 1'7
vs.
Binarf
5-1
Charactdrs 6-4
Definitiod
A-1
Dumpin$ (in
Telecommunications Mode) 5-3
Standard
6-4
Table
D.fl
Transmidsion 6-4
t-1
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