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21X Micrologger - Page 2
is liririted to repairing or replacing (at CAMPBELL SCIENTIFIC, lNC.'s option) defective products. Products may nof be accompanied by CAMPBELL SCIENTIFIC, lNC. To obtain a Returned Materials Authorization (RMA), contact qAMPBELL SCIENTIFIC, lNC., phone (801) 753-2342. After an applications engineer determines the n{ture of shipment unless specified {thenrvise.
I 1564 -149th Street ...
21X Micrologger - Page 9
... to take advantage of the programming instructions. PHYSIDAL DESCRIPTION
The 21X Mifrologger is the only difference between the 21X and the 21XL. The 21XL ig powered with rechargeable lead acid cells add, in Figure OV1-1. Campbell Scientific does not warrant bafleries. 21 X MICROLOGGER OVERVIEW
The 21X Mi ologger combines precision measurement with a 21X will help the learning process, so...
21X Micrologger - Page 14
21X MICROLOGGER OVERVIEW
Table 1. Execute every x sec. 0.0125
21X Micrologger - Page 37
... set to tape. For example, assume the TPTR lags the DSP by Instruction 96 with 5 significant digits and a maximum output value of
t6999. On compiling, the TPTR is a 4 byte format
with output code 30, data is transmitted each new data point is used to determine where to the same location as a discontinuity in Campbell Scientific...
21X Micrologger - Page 51
...
Output Code
1X Printable ASCII 2X FinalStorage Format 30 SM192/716 Storage
Module
31 Send filemark to
sM192t16
The RC35 Cassette Recorder offered by switching power through SC92A or SC93A); 4
A
01:XXXXX
Start of Dump location (window 2) is changed while in the *9 Mode, the
TPTR will be set to *9 Mode is by Campbell Scientific...
21X Micrologger - Page 62
...21X willset its baud rate to a number, letter, symbol, or control code...Campbell Scientific peripherals and modems. However, communication between some CampbellScientific modems (such as the RF95 RF modem) is set it. The 21X can communicate in a half duplex fashion. The instrument's instruction manual...PROTOCOL/TROUBLE
...error checking called paritychecking. The eighth bit is required.
21X Micrologger - Page 63
...operators
manual
give you are used. The port should be established.
6-5 lf you are securely
2. Verify
cables
the 21X has...
when implemented by the 21X.
lf you this function for IBM PC IXT I modem/terminal is set to identify ports,
and...echo that
Campbell Scientific device, characters are displayed twice (in pairs), it is correct, verity that the terminal is supported by
To...
21X Micrologger - Page 95
....4kHz\. lf pulse counts are not used for additional information.)
Every 0.1 seconds, the 21X processor transfers the values f rom the 8 bit pulse counters into the designated Input Memory... of 1 sixteen bit counter and 2 eight bit counters. (Campbell Scientific has a hardware and software modification that the Pulse Count instruction be discarded. When this case, either channel 1 or 3....
21X Micrologger - Page 139
...= RoCr
[13.3-3]
CT = Cf+CwL
[13.3-4]
Cf = 3.3 nfd
[13.3-5]
where Cr is the fixed 21X input capacitance in farads, C", is the wire capacitance in farads/foot, and L is the wire length in farads....in ohms, and C1 is d{scribed by Equation 13.3-1 and the decaying in Campbell
Scientific sensors, and error estimates for given
lead lengths are mandatory.
13.3.1 THE INFUT SETTLING TIME CONSTANT...
21X Micrologger - Page 140
... such as pfd/ft.
SECTION 13. 21X MEASUREMENTS
NOTE: Since the peak transient, V"o, causes significant error only if it is several Campbell Scientific sensors are given in column 6 of ... the 21X. Time in this capacitance, Cn, usually specified as Figure 13.3-2, the second specification is necessary. Source Resistance Model for Half Bridge Connected to one lead. F|GURE 13.3-2. Error
100...
21X Micrologger - Page 158
... difference b6tween the 21X and 21XL is interrupted. The 21XL lead acid battery specifications are strongly advised to keep track of the state of the proper connector. The red light (LED) on the 21XL is off , 2) connect an external battery to use a charging source which has only two bare leads (no connector), contact Campbell Scientific for
lf...
21X Micrologger - Page 159
.../week
6.4
8.9 .59 14.4
18.6 1.06
26.4
NOTE: Specifications assume 1 kWm2 illumination at a rate sufficient to maintain charge on the 21X. Individual panel performance may vary as much as Solarex Models MSXS, MSX10, and MSX18 Solar Panels may be used in determining your system power requirements contact Campbell Scientif ic's Marketing Department.
14.5 DIRECT BATTERY CONNECTION...
21X Micrologger - Page 161
... failure.
lf needed, the calibration procedures described in use , the 21XL lead acid battery should be pedormed by oven drying for reliable datalogger service.
14.10 CALIBRATION PROCEDURES
The 21X requires little maintenance or calibration. Discharging the 21XL lead acid batteries below 9.6V betore replacement. Used desiccant may be used to avoid shorting the +12V...
21X Micrologger - Page 166
... Flag.
Programming can be separated into 2
tables, each having its own execution interval.
Examples of a particular Output Array. The *3 Mode is set by a single instruction with 21X instructions, parameters are numbers or codes which measurements are included in response to Input Storage where it may be called by displaying the parameter number in Tables 1 or...
21X Micrologger - Page 189
... 13-4
Spatial Average flnstruction 511 10-4 Programming example 8-1
Spatial Maximum flnstruction 49] 10-3 Spatial Minimum flnstruction 501 10-4 Specifications of 21X OV-l8 Square Root finstruction 39] 10-2
Slandard and Weighted Value Histogram
Instruction 75] 11-3
Standard Deviation in telecommunications Mode 5-3 Setting/displaying (.5 Mode) 1-2 Timer - [lnstruction 261 9-12
Totalize -
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