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Campbell RF400 Instruction Manual - – Caution –

Summary of RF400

  • Page 1

    Instruction manual rf400/rf410/rf415 spread spectrum data radio/modem revision: 3/05 c o p y r i g h t ( c ) 2 0 0 1 - 2 0 0 5 c a m p b e l l s c i e n t i f i c , i n c ..

  • Page 2: Warranty and Assistance

    Warranty and assistance the rf400 series spread spectrum data radio/modems are warranted by campbell scientific, inc. To be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless specified otherwise. Batteries have no warranty....

  • Page 3: – Caution –

    – caution – where an ac adapter is used, csi recommends item # 15966. This ac adapter is included as part of item # 14220 rf400 series base station cable/power kit. Any other ac adapter used must have a dc output not exceeding 16.5 volts measured without a load to avoid damage to the rf400 series ra...

  • Page 4

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  • Page 5: Appendices

    I rf400 series table of contents pdf viewers note: these page numbers refer to the printed version of this document. Use the adobe acrobat® bookmarks tab for links to specific sections. 1. Introduction.................................................................1 2. Rf400 series specifications ....

  • Page 6

    Rf400 table of contents ii c. Rf400 series address and address mask ........... C-1 d. Advanced setup standby modes ......................... D-1 e. Rf400 series port pin descriptions ..................... E-1 f. Datalogger rs-232 port to rf400 series radio ... F-1 g. Short-haul modems ................

  • Page 7

    Rf400 table of contents iii k-1. 900 mhz gain antenna test distances..............................................K-6 l-1. Advanced setup menu ........................................................................ L-1.

  • Page 8

    Rf400 table of contents iv this is a blank page..

  • Page 9: Radio/modems

    1 rf400 series spread spectrum data radio/modems 1. Introduction this manual covers the rf400 series radios — the rf400, rf410, and rf415. These radios differ from one another primarily in the radio frequencies at which they communicate. In this manual the term “rf400” can refer to the “rf400 series...

  • Page 10

    Rf400 series spread spectrum data radio/modems 2 figure 1. Rf400 the rf400 has a 9-pin serial cs i/o port and a 9-pin serial dce rs-232 port. The cs i/o port allows the rf400 to connect to a datalogger. The rs-232 port allows direct pc connection for setup menu access and to create a direct connect ...

  • Page 11: 3.  Quick Start

    Rf400 series spread spectrum data radio/modems 3 quiescent current in standby modes* avg. Quiescent current (ma) advanced setup standby mode standard setup rf400/ rf410 rf415 24.0 33.0 0 (no duty cycling) 1 3.9 5.5 3 2 2.0 2.8 4 3 1.1 1.5 5 0.64 0.84 6 0.40 0.50 7 4 * not receiving a signal nor tran...

  • Page 12

    Rf400 series spread spectrum data radio/modems 4 for this system you will need the following hardware or the equivalent: 1. Two rf400s 2. Two rf400 antennas 3. Ac adapter (item # 15966 or part of kit #14220) 4. Serial cable (6 ft.) for pc com port to rf400 rs-232 port (item # 10873 or part of item #...

  • Page 13

    Rf400 series spread spectrum data radio/modems 5 apx technologies inc. Class 2 transformer model no: ap2105w input: 120vac 60hz 20w listed 2h56 e144634 made in china output: 12vdc 1.0a hicksville, new york ul r ul r rs232 dc pwr cs i/o pwr/tx rx made in usa serial # program antenna 14320 rf400 sprea...

  • Page 14

    Rf400 series spread spectrum data radio/modems 6 current dataloggers and wiring panels (not mentioned in table 1) provide 12 v on pin 8. For older products not listed, check for 12 v between cs i/o connector pin 8 and pin 2 (gnd) or contact campbell scientific. C. Use default settings of rf400. Step...

  • Page 15: 4.  System Components

    Rf400 series spread spectrum data radio/modems 7 auto sense the rf400 has a default feature called “auto sense” that automatically configures certain rf400 settings. When you connect an rf400 to a datalogger (cs i/o port to cs i/o port) the rf400 detects the presence of the datalogger and makes its ...

  • Page 16

    Rf400 series spread spectrum data radio/modems 8 green led activity indicates that there is an rf signal being received whose hopping sequence corresponds to the configured hopping sequence of the rf400. This does not necessarily mean that the network/radio address of the received packet corresponds...

  • Page 17

    Rf400 series spread spectrum data radio/modems 9 the standard setup standby modes automatically configure: • time of inactivity to sleep • time of inactivity to long header • long header time the default mode is the standard setup menu selection “2” for “ sec cycle.” there are standby modes availabl...

  • Page 18

    Rf400 series spread spectrum data radio/modems 10 4.1.3.2 atdt command mode this mode is not required for basic point-to-point communication. For point-to-multipoint operation the rf400 can temporarily be put into at command mode by sending a string of three ascii characters. The default sequence to...

  • Page 19

    Rf400 series spread spectrum data radio/modems 11 retries”, “time-slots for random retry”, and “bytes transmitted before delay” settings. Standard retry levels menu retry level maximum retries time-slots for random retry bytes transmitted before delay 1 none 0 0 65535 2 low 3 2 1000 3 medium 6 3 100...

  • Page 20

    Rf400 series spread spectrum data radio/modems 12 for example, if you input a value of 50, then packets with hop sync info will be sent out every 5 seconds improving (shortening) the response time of a transmit/response sequence. Even though this shortens the time required to send x amount of data, ...

  • Page 21

    Rf400 series spread spectrum data radio/modems 13 (csi item # 14291) with tinned leads to connect to power at the datalogger 12 v output terminals and barrel connector to plug into the rf400’s “dc pwr” jack. If 120 vac is available at the site, the 120 vac adapter alone (csi item # 15966) is an opti...

  • Page 22

    Rf400 series spread spectrum data radio/modems 14 csi ac adapter item # 15966 voltage regulation (typical) while plugged into an ac outlet delivering 120.0 vac: table 3. 15966’s voltage regulation current drain (ma) resistive load (ohms) ac adapter output (volts) 0 (no load) ∞ (open circuit) 12.22 1...

  • Page 23

    Rf400 series spread spectrum data radio/modems 15 a remote rf400 can be connected to a cr23x’s or cr5000’s rs-232 port with a null modem db9m/db9m cable (csi item # 14392). See appendix f for details on power supply. 4.4 antennas for the rf400 series several antennas are offered to satisfy the needs...

  • Page 24

    Rf400 series spread spectrum data radio/modems 16 wisp24015ptnf, boom length 17 inches, diameter 3 inches, w/ end mount to fit 1 to 2 in. O.D. Mast (requires either (1) coax rpsma-l for short runs or (2) coax ntn-l with antenna surge protector kit) coax rpsma-l lmr 195 antenna cable, reverse polarit...

  • Page 25

    Rf400 series spread spectrum data radio/modems 17 item # 14204 900 mhz omni ½ wave whip 0 dbd item # 14201 900 mhz yagi 9 dbd w/mounts item #14205 900 mhz yagi 6 dbd w/mounts item # 14221 900 mhz omni collinear 3 dbd w/mounts.

  • Page 26

    Rf400 series spread spectrum data radio/modems 18 item #15970 900 mhz indoor omni 1 dbd window/wall mounted item #16005 2.4 ghz omni half wave whip 0 dbd item #16755 2.4 ghz enclosed yagi, 13 dbd w/mounts figure 4. Some fcc approved antennas.

  • Page 27

    Rf400 series spread spectrum data radio/modems 19 figure 5. Example coax rpsma-l cable for yagi or omni colinear figure 6. Antenna surge protector 4.5 antenna cables and surge protection 4.5.1 antenna cables the 14201, 14203, 14205, 14221, and 16755 antennas require an antenna cable; either (1) the ...

  • Page 28

    Rf400 series spread spectrum data radio/modems 20 • when use of coax rpsma would result in too much signal loss (see page h-3) • when the rf400 series radio will be used in an environment susceptible to lightning or electro-static buildup 4.5.3 antenna surge protector kit the surge protector kit for...

  • Page 29: 5.  Software Setup

    Rf400 series spread spectrum data radio/modems 21 5. Software setup 5.1 point-to-point set-up parameters are configured the same for the two rf400s. The rf400 defaults to radio address “0” (zero) which works for many applications. See section 4.2 for power supply options. 5.2 point-to-multipoint the...

  • Page 30

    Rf400 series spread spectrum data radio/modems 22 main menu sw version 6.425 (for example) (1) standard setup (2) advanced setup (3) restore defaults (4) show all current and default settings (5) save all parameters and exit setup (9) exit setup without saving parameters enter choice: 4. Press “1” f...

  • Page 31

    Rf400 series spread spectrum data radio/modems 23 c. Select a radio address (0 – 1023). The radio addresses must be the same in point-to-point communications (for point-to-multipoint communications you could set the base rf400 to 0 and the remotes to 1, 2, 3, etc.). It is a good idea to label each r...

  • Page 32

    Rf400 series spread spectrum data radio/modems 24 2. Point-to-multipoint a. Complete steps 1 to 4 above making the remote stations’ network addresses and hopping sequences the same as the base station’s. B. While in standard setup verify that the active interface is “auto sense” and give each remote...

  • Page 33

    Rf400 series spread spectrum data radio/modems 25 power and intermittent repeater sites may not be a problem. Test such a site with a representative setup before committing to it (see troubleshooting section 6). Keep in mind that commercial sites tend to evolve. Such a site may work now but could ch...

  • Page 34

    Rf400 series spread spectrum data radio/modems 26 rf400 rf400 rf400 rf400 datalogger datalogger datalogger figure 8. Point-to-multipoint system 5.3.4 pc208w configuration a. Point-to-point (1) device map - com1 cr10x1 (2) set station cr10x1 baud rate to 9600 baud in network map (3) datalogger extra ...

  • Page 35

    Rf400 series spread spectrum data radio/modems 27 (4) datalogger station settings (a) example “dialed using generic dial string”: d1000 t"+++" r"ok"9200 t"atdt3001^m"r"ok"1200 t"atcn^m"r"ok"1200 (i) d1000 creates a 1 second delay (ii) t sends quoted string w/o waiting for a character echo (iii) +++ ...

  • Page 36: 6.  Troubleshooting

    Rf400 series spread spectrum data radio/modems 28 6. Troubleshooting if you can’t connect, check out these possible causes: 1. Datalogger or wiring panel lacks 12 v power on pin 8 of cs i/o port the rf400 should go through its initialization with red and green leds lighting (see section 4.1.1) when ...

  • Page 37

    Rf400 series spread spectrum data radio/modems 29 7. Rf400 receiver “de-sensing” from nearby transmitter this problem can be observed from led behavior when operating a hand- held radio near an rf400 that is receiving collected data from a remote station. If you key a hand-held 150 mhz or 450 mhz tr...

  • Page 38

    Rf400 series spread spectrum data radio/modems 30 10. Pc208w.Dnd file corrupted the remote possibility exists that this file has become corrupted in your pc. After you create the network map in pc208w, you can back up pc208w.Dnd in case this should happen. If this appears likely, exit pc208w and cop...

  • Page 39: Warning

    A-1 appendix a. Part 15 fcc compliance warning changes or modifications to the rf400 series radio systems not expressly approved by campbell scientific, inc. Could void the user’s authority to operate this product. Note: this equipment has been tested and found to comply with the limits for a class ...

  • Page 40

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  • Page 41: Appendix B.  Setup Menu

    B-1 appendix b. Setup menu here is the structure of the rf400 series’ built-in setup menu system which can be accessed by configuring a terminal emulator program such as procomm tm or hyperterminal tm to 9600 baud (8-n-1) and pressing the “program” button on the rf400 with rf400’s rs-232 port cabled...

  • Page 42

    Appendix b. Setup menu b-2 ii) radio standby modes (1) standby mode (0 => 24 ma always on 3 => 4 ma 1/2 sec cycle) (4 => 2 ma 1 sec cycle 5 => 1 ma 2 sec cycle) (6 => .6 ma 4 sec cycle 7 =>.4 ma 8 sec cycle) (2) time of inactivity to sleep (units of 100 msec; 1 – 32767) (3) time of inactivity to lon...

  • Page 43

    Appendix b. Setup menu b-3 4 => 38.3k (2) rs-232 parity: 0 => none 1 => odd 2 => even (3) rs-232 character length: 0 => 8 bits 1 => 7 bits (4) rs-232 stop bits: 0 => 1 1 => 2 3) restore defaults 4) show all current and default settings 5) save all parameters and exit setup 6) exit setup without savi...

  • Page 44

    Appendix b. Setup menu b-4 this is a blank page..

  • Page 45: Address Mask

    C-1 appendix c. Rf400 series address and address mask address an rf400’s address is 16 bits: (0 - 1111,1111,1111,1111) binary (0 - ffffh) hexadecimal 0 – 65535) decimal the two parts of the address are the “network address” and the “radio address.” the six most significant bits of the address are th...

  • Page 46

    Appendix c. Rf400 series address and address mask c-2 four bits are not compared, any remote rf400 with radio address of 0 to 1111 (decimal 0 to 15) will be received by the base station. This allows multiple remotes in a network to be received by the base without changing the base radio address (the...

  • Page 47

    Appendix c. Rf400 series address and address mask c-3 net address (decimal) radio address (decimal) combined 16-bit address (hexadecimal) 0 29 001d 0 30 001e 0 31 001f 0 32 0020 0 1022 03fe 0 1023 03ff 1 0 0400 1 1 0401 2 0 0800 2 1 0801 3 0 0c00 3 1 0c01 4 0 1000 4 1 1001 5 0 1400 5 1 1401 6 0 1800...

  • Page 48

    Appendix c. Rf400 series address and address mask c-4 net address (decimal) radio address (decimal) combined 16-bit address (hexadecimal) 15 0 3c00 15 1 3c01 16 0 4000 16 1 4001.

  • Page 49: Modes

    D-1 appendix d. Advanced setup standby modes the standard setup menu selections should fill the majority of user needs. The following information is given in case you need to program a non-standard standby mode. The standard setup menu selections do not correspond with advanced setup menu entries. F...

  • Page 50

    Appendix d. Advanced setup standby modes d-2 in general, these inactivity timers should be set so that the rf400 stays on (receiving or transmitting, not in standby mode) longer than the quiet times during communication. You can experiment with this to see how it works. Time of inactivity to sleep t...

  • Page 51: Descriptions

    E-1 appendix e. Rf400 series port pin descriptions rs-232 port the “rs232” port is a partial implementation of rs-232c. It is configured as data communications equipment (dce) for direct cable connection to data terminal equipment (dte) such as an ibm-pc serial port. Rs-232 connector, 9-pin d-sub fe...

  • Page 52

    Appendix e. Rf400 series port pin descriptions e-2 cs i/o connector, 9-pin d-sub male pin function i/o description 1 5v i sources 5 vdc to power peripherals 2 gnd gnd for pin 1 and signals 3 ring o raised by modem to put datalogger into telecommunications mode 4 rx o serial data receive line 5 modem...

  • Page 53: Rf400 Series Radio

    F-1 appendix f. Datalogger rs-232 port to rf400 series radio a connection from rf400 rs-232 port to cr23x or cr5000 rs-232 port requires a 9-pin male to 9-pin male null-modem cable. This cable is available as csi item # 14392. A 12-volt field power cable (item # 14291) or ac adapter (item # 15966) m...

  • Page 54

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  • Page 55

    G-1 appendix g. Short-haul modems set srm-5a at pc end to “dce” mode. Set srm-5a at rf400 end to “dte” mode. The pc to srm-5a cable is typically a 9-pin female to 25-pin male (csi item # 7026). The srm-5a to rf400 cable is 25-pin male to 9-pin male available as csi item # 14413. Loggernet or pc208w ...

  • Page 56

    Appendix g. Short-haul modems g-2 with short-haul modems it is necessary to configure the base station rf400’s “rs-232 auto power down enable” (in the advanced setup \ interface parameters menu) to mode "0" which will maintain the radio's rs-232 port always active. This results in an additional cons...

  • Page 57

    H- 1 appendix h. Distance vs. Antenna gain, terrain, and other factors rf path examples distance achieved (miles) antennas path between radios 2 14204 omni ½ wave 0 dbd* whip to 14204 omni ½ wave 0 dbd whip virtual line-of-sight on valley floor with wetland foliage. 10 14204 omni ½ wave 0 dbd whip t...

  • Page 58: How Far Can You Go?

    Appendix h. Distance vs. Antenna gain, terrain, and other factors h-2 how far can you go? Distance estimates for spread spectrum radios overview there is a great deal of interest in estimating the distance you can expect to achieve with the rf400 radios. Also of interest are the effects of cable len...

  • Page 59

    Appendix h. Distance vs. Antenna gain, terrain, and other factors h-3 pr => signal power at the radio receiver in dbm the signal power at the receiver (pr) must exceed the receiver sensitivity ( −110 or –104 dbm) by a minimum of 6 db for an effective link. The amount that pr exceeds –110 dbm or –104...

  • Page 60

    Appendix h. Distance vs. Antenna gain, terrain, and other factors h-4 antenna gain antenna gain is specified either in dbi (decibels of gain relative to an isotropic radiator) or in dbd (decibels of gain relative to a dipole). The relationship is: dbi = dbd + 2.15 some antennas that are fcc approved...

  • Page 61

    Appendix h. Distance vs. Antenna gain, terrain, and other factors h-5 as mentioned before, free space conditions are the ideal, but seldom actually seen. The higher the antenna height relative to the terrain in the line of sight path, the closer to free space conditions. Antenna height is everything...

  • Page 62

    Appendix h. Distance vs. Antenna gain, terrain, and other factors h-6 here is a table which gives calculated path loss (lp) values at 900 mhz for the 2 nd , 3 rd , and 4 th powers of distance; the equations (for 915 mhz) are: lp (2 nd power) = 95.8 + 20 × log ( d ) db (d in miles) lp (3 rd power) = ...

  • Page 63

    Appendix h. Distance vs. Antenna gain, terrain, and other factors h-7 use –107 dbm for pr, solve for lp: lp = 135 db use the 3 rd to 4 th power tables: range from ~9 (4 th power) to ~22 (3 rd power) miles example #2 base has maxrad bmoy8905 yagi, with 50’ of lmr195 cable on a 30’ tower, also a light...

  • Page 64

    Appendix h. Distance vs. Antenna gain, terrain, and other factors h-8 this is a blank page..

  • Page 65

    I- 1 appendix i. Phone to rf400 series where a phone to rf400 base is desired, the following configurations will provide point-to-point or point-to-multipoint communications. To have a base datalogger in this configuration requires that another rf400 be added at the base. 1. Hardware requirements a....

  • Page 66

    Appendix i. Phone to rf400 series i-2 c. Phone modem 1) baud rate – 9600 2) modem pick list – per pc’s phone modem 3) extra response time – 2000 ms d. Datalogger – dialed using phone # at base site rf400 configuration a. Base rf400 1) active interface: “com2xx to rf400” 2) at command (attention) cha...

  • Page 67

    Appendix i. Phone to rf400 series i-3 pc208w setup a. Network map com1 modem1 generic1 cr10x_1 cr10x_2 b. Com port - default settings c. Phone modem 1) baud rate – 9600 2) modem pick list – per pc’s phone modem 3) extra response time – 2000 ms d. Generic modem 1) dialed using phone # at base site 2)...

  • Page 68

    Appendix i. Phone to rf400 series i-4 figure i-1. Loggernet point-to-multipoint setup 4. Hardware after configuring loggernet or pc208w and the rf400s you are ready to set up hardware. The ps512m null-modem connectors (it’s not important which connector goes to which unit) connect via sc12 cables to...

  • Page 69: Series

    J- 1 appendix j. Monitor csat3 via rf400 series procedure for installing a pair of rf400 series spread spectrum radios for monitoring a csat3 system at a distance. This function has traditionally been implemented by running a short haul modem cable between csat3 and pc. Hardware requirements • two r...

  • Page 70

    Appendix j. Monitor csat3 via rf400 series j-2 (5) select “1” for “standard setup” and configure the following (a) active interface – leave at default “auto sense” (b) network address – can be default “0” if no neighboring rf400 networks are operating; otherwise choose a different network address (s...

  • Page 71

    Appendix j. Monitor csat3 via rf400 series j-3 (2) remote station (a) connect 12 v power supply to rf400 (can be either 120v ac adapter or 12v field power cable) (b) connect 9 pin male to 9 pin male null-modem cable from csat3 rs-232 connector to rf400’s rs-232 connector. (c) you are ready to start ...

  • Page 72

    Appendix j. Monitor csat3 via rf400 series j-2 this is a blank page..

  • Page 73: Tests

    K-1 appendix k. Rf400/rf410 pass/fail tests this appendix describes a method to functionally test rf400/rf410 system components including: • pc com port • sc12 serial cable • rf400/rf410 • rf400/rf410 antenna hardware/software required 9 pc with one available com port 9 terminal program (hypertermin...

  • Page 74

    Appendix k. Rf400/rf410 pass/fail tests k-2 (d) emulation: tty (e) ascii (f) com1 (or any available com port) with some versions of hyperterminal tm after changing a setting it is necessary to do a “call disconnect” (or “disconnect”) followed by a “call connect” (or “call”) for the new setting to re...

  • Page 75

    Appendix k. Rf400/rf410 pass/fail tests k-3 testing rf400/rf410s after verifying the functionality of the terminal program and the integrity of the serial cable and com port, proceed as follows: (1) connect 12v power to an rf400/rf410. This can be from an ac adapter (item # 14220 or field power cabl...

  • Page 76

    Appendix k. Rf400/rf410 pass/fail tests k-4 (9) make sure that no antennas are attached to the rf400/rf410s (10) label the other rf400/rf410, “remote” (11) insert jumper into the remote rf400/rf410’s rs-232 connector pins 2 and 3 (using a u-shaped portion of a paper clip) allowing data received from...

  • Page 77

    Appendix k. Rf400/rf410 pass/fail tests k-5 (b) choose an open area free of large 2 metal objects within 10 feet of the rf400/rf410s (can be indoors or outdoors). (c) attach a 1/4 wave omni antenna (item # 14310) to base rf400/rf410 (d) set up remote rf400/rf410 with no antenna (e) separate rf400/rf...

  • Page 78

    Appendix k. Rf400/rf410 pass/fail tests k-6 figure k-3. 3 dbd 900 mhz collinear omni antenna (d) set up remote rf400/rf410 with no antenna and with antenna connector 20 inches above floor. (e) arrange antenna distance apart according to following table. Table k-1. 900 mhz gain antenna test distances...

  • Page 79: Current Drain Calculations

    L-1 appendix l. Rf400/rf410 average current drain calculations for remote sites with tight power budgets due to solar or battery power supplies, the following will help determine average current consumption. The rf400/rf410’s average current drain is based on: • standby mode of rf400/rf410 • data co...

  • Page 80

    Appendix l. Rf400/rf410 average current drain calculations l-2 the base rf400/rf410’s total average current(it) can be calculated over an interval (t) as follows: it = is + ih + iq + ir + ii is = {table value} remote the average current drain of a remote rf400/rf410 being collected on schedule has 4...

  • Page 81

    Appendix l. Rf400/rf410 average current drain calculations l-3 example #1 (remote rf400/rf410 in default standby mode) there is a point-to-point system with base rf400/rf410 and remote rf400/rf410. The remote station senses weather conditions and sends low- resolution data to final storage. The base...

  • Page 82

    Appendix l. Rf400/rf410 average current drain calculations l-4 example #2 (base rf400/rf410 in default standby mode) the base rf400/rf410 in the above example does more receiving and less transmitting than the remote rf400/rf410 so you might expect less average current drain, however, the amount of ...

  • Page 83

    Appendix l. Rf400/rf410 average current drain calculations l-5 example #3 (base rf400/rf410 in “ the rf400/rf410s in this example are configured for the lowest possible average standby mode current (advanced setup menu selection 7). The same amount and frequency of data are collected as in example 1...

  • Page 84

    Appendix l. Rf400/rf410 average current drain calculations l-6 example #4 (remote rf400/rf410 in “ the rf400/rf410s in this example are configured for the lowest possible average standby mode current (advanced setup menu selection 7). The same amount and frequency of data are collected as in example...

  • Page 85

    Appendix l. Rf400/rf410 average current drain calculations l-7 example #5 (base rf400/rf410 in default “ the rf400/rf410s in this example are configured for the default average standby mode current. The same amount of data (10 data points) are collected as in example 1, however the frequency of coll...

  • Page 86

    Appendix l. Rf400/rf410 average current drain calculations l-8 example #6 (base rf400/rf410 in “ the rf400/rf410s in this example are configured for the lowest possible average standby mode current (advanced setup menu selection 7). The same amount of data are collected as in example 1, however the ...

  • Page 87

    Appendix l. Rf400/rf410 average current drain calculations l-9 example #7 (remote rf400/rf410 in “ the rf400/rf410s in this example are configured for the lowest possible average standby mode current (advanced setup menu selection 7). The same amount of data are collected as in example 1, however th...

  • Page 88

    Appendix l. Rf400/rf410 average current drain calculations l-10 this is a blank page..

  • Page 89

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  • Page 90

    Campbell scientific companies campbell scientific, inc. (csi) 815 west 1800 north logan, utah 84321 united states www.Campbellsci.Com info@campbellsci.Com campbell scientific africa pty. Ltd. (csaf) po box 2450 somerset west 7129 south africa www.Csafrica.Co.Za sales@csafrica.Co.Za campbell scientif...