Errata for “User`s Manual for dataTaker DT800 data logger” 19 Jan
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1. leaving 23 456 in the receive buffer e 2b would set nCV to 12594 49 256 50 leaving 3 456 in the receive buffer e 3b would set nCV to 3223859 49 65536 50 256 51 leaving 456 in the receive buffer Note that due to the limited precision of CVs the maximum practical width value is 3 24 bits 163 In the example under abc If the control string is pq3rs 1 and the received string is pp3rpsab3pr then pp3rps will be placed into 1 leaving ab3pr in the input buffer 163 The scanset negation character is not 164 Note that the username units and nCV channel options see page 75 are also valid for the serial channel 174 In the table under figure 117 replace 3 BGV 6W with 4BGV 6W and replace 11 BGV 6W with I2BGV 6W 176 The statement about the bridge voltage being calculated from measured current applies to BGI not BGV 181 1LM35 will perform a 4 wire measurement For the 3 wire connection shown the command would be 1 LM335 not 1LM35 In the example where six LM35s are connected to a channel pair the command to read sensor E should be 2 LM35 not 2 LM35 189 ASCII Decimal Table Decimal 3 in ASCII is ETX not EXT 189 Delete entry for ASCII 98 add b in control column for ASCII 34 UM0068A2 ERA3 Page 5 of 52. For example if you set 1VNC LEVEL gt 500 then the actual trigger value as evidenced by the captured 1VNC values may actually be say 525mV instead of 500mV UM0068A2 ERA3 Page of 5 60 61 96 actionProcesses in DO IF ALARM cannot return values for channels For example ALARM 1V gt 100 2V will sample 2V whenever 1V is greater than 100mV however the value will not be returned This is because the channel is sampled in the same schedule as the alarm is defined in and as such cannot be returned conditionally as variable length data records are not supported by the logger 63 In the example in Number of fundamental samples per reading the actual measurement order for a V channel is Vdiff Vdiff Vzero Vzero 63 Note that a VNC channel type do not auto range That is it has a default channel option of GL20V 64 BGV requires 8 fundamental samples not 4 as shown 64 Maximum resistance value is 10M ohm although accuracy is not guaranteed above 10k ohm 65 70 For RTD thermistor channel types R PT385 PT392 NI CU and YSxx the P channel option specifies the power excitation level in uW not mW The default channel options for PT385 should therefore be listed as 100 P7000 not 100 P7 and similarly for the other channel types 66 The AS channel type uses 1 fundamental sample not 4 66 For the C channel type the page reference should be page 157
3. for windows NT and the command IPCONFIG for DOS and Windows 2000 or XP 143 TK thermocouple composition should be 2 Mn Manganese not 2 min 149 Analog Output terminal Ao output voltage is set using VO channel type see p63 Note that Ao is not available ie it may be set to a different voltage to that set using VO whilst doing an analog frequency measurement F channel type or a level triggered burst measurement 152 Digital Channel Specifications e For D1 D6 and D7 D8 change Specification for Low pass filter active drive for example logic device from 200kHz to 20kHz e Add specifications for D1 D6 and D7 D8 output rise time approx 5ms Output fall time approx 100us e Add specification for D7 D8 Maximum output current open drain FET 100mA 152 157 Counters 9 16 are sampled at a rate of 60Hz hence the minimum input pulse width is 16ms and hence the max count frequency for a 50 duty cycle input is 30Hz not UM0068A2 ERA3 Page 3 of 5 158 40Hz Add the following note regarding the CT pin of the serial sensor port The CT pin of the serial sensor port is an input that will wake the logger out of sleep mode when external power is turned to the unit The maximum voltage that can be applied to this input is 15 VDC The Input impedance is12 K Ohm 158 Flow control is not implemented on the serial sensor port The flowcontrol option NOF
4. C HWFC SWFC is ignored 161 e and p are not supported as output actions These are only supported in input strings 161 The following describes the operation of the width and precision specifiers Minimum field width for output An optional minimum field width expressed as an decimal integer constant may be specified The constant must be a nonempty sequence of decimal digits that do not begin with a zero digit which would be taken to be the 0 flag If the converted value including prefix results in fewer characters than the specified field width then pad characters space or zero are used to pad the value to the specified width If the converted value results in more characters than the specified field width then the field width is expanded to accommodate it without padding Precision specification for output An optional precision specification may be used expressed as a period followed by an optional decimal integer The precision specification is used to control e the minimum number of digits to be printed for d i o x and X conversions e the number of digits to the right of the decimal point in e E and f conversions e the number of significant digits in the g and G conversions e the maximum number of characters to be written from a string in the s conversion Using a CV to control width and precision The field width or field width and precision may also be specified by an asterisk in whi
5. ET DELFLASHONRESET These commands are not necessary and will be deprecated in a future release of the firmware All changes made to the USER INI file are always copied directly to flash as well so there is no need to use the FLASHUSERINI command The DELUSERINI command will delete the copy of the USER INI in flash as well as the one held on the RAM disk The RUNJOBONRESET will copy the ONRESET DXC job to the FLASH as well as the RAM disk The DELJOBONRESET will delete the ONRESET DXC file from both FLASH and the RAM disk 117 In the section Setting the DT800 s Clock Calendar the paragraph beginning Of course you can use the DT800 without setting its clock calendar should be replaced with Time and date are maintained when the logger is switched off or reset If the logger is switched off and the internal Memory Backup battery see page 42 is removed or discharged then the date time will be reset to 1989 01 01 00 00 00 122 The lines in the sample status report should be numbered 1 to 8 not 0 to 7 131 The diagram showing modem power relay driven from digital output should have the coil connected to 12V or an external supply not Gd 133 DeTransfer Version 3 27 and later includes an Extra Timeout field on the connection dialog which removes the need to edit the registry as described here 136 Update footnote Use the command WINIPCFG for Windows 95 and 98 the command WNTIPCFG
6. Errata for User s Manual for dataTaker DT800 data logger 19 Jan 2006 UM0068A2 ERA3 This document details errors omissions and changes to Revision A2 of the DT800 User s Manual To determine the revision number of your copy check the document code printed on the title page This will be of the form UM 0068 xx where xx is the revision number If you have an earlier revision of the manual A0 or A1 then we recommend that you obtain the current revision which is applicable to DT800s running the currently released firmware Version 4 00 and later Revision A2 of the User s Manual is available PDF format for free download from the dataTaker web site or a printed copy may be ordered Page s Errata Description 17 In the example program the ALARM2 line should read ALARM2 4TT gt 110 0 3DSO 1CV Over temp RB5S 22 Delete the entry in the table for C program change record types These are not included in logged data 22 Delete the entry in the table for B burst record types Burst data are returned as D records Two new data record index entries have been defined for burst data 6 burst complete 7 burst timeout 25 PC Card slot does not support modem cards 29 Currently the Attention LED only lights if SATTN or 2WARN 1 commands are issued The various alarm conditions listed eg log full internal temperature limit exceeded are not implemented 35 Mounting hole dia
7. ate 85 The NUM channel option appends Num to the units 87 In the table describing the function of the rainflow variables the horizontal dividing line should be under d 7 not above it 91 Note that a maximum of six polynomial coefficients can be entered 98 If an alarm is true then DSO is 0 low active if alarm is false then DSO is 1 high 96 98 digitalAction can also be a CV eg ALARM 1CV 2DS is valid If the alarm is TRUE then the channel variable CV will be set to 1 TRUE if the alarm is FALSE then the CV will be set to 0 FALSE UM0068A2 ERA3 Page 2 of 5 107 109 The statement that parameters P11 P31 P39 P50 and P51 are kept during reset is not correct 107 110 Parameters P11 P46 P57 and P60 are sampled and stored at the time a schedule is defined You should always set the value of these parameters prior to defining the schedule 108 European date format P31 1 should be DD MM YYYY 108 P38 range is 1 255 109 P46 range is 1 255 111 G switch is not implemented on DT800 112 112 V switch dump event log on error reset is not implemented on DT800 X switch is not implemented on DT800 112 Y switch is not implemented on DT800 115 Profile example PROFILE HOST_PORT MODEM_INSTALLED CHECK demonstrates an obsolete profile key Delete this example 116 117 Delete all references to FLASHUSERINI DELFLASHUSERINI FLASHONRES
8. ch case the value of the first or first and second nCV argument specifies the width precision For example the following causes the value of 2CV to be output as a floating point value The minimum number of characters to be output is 5 as specified by 1CV 1CV 5_ISERIAL f 1CV 2CV 162 The descriptions of the text nnn and char input actions are unclear Each character in the sequence must occur in order in the input data stream but each may be preceded by any number of other characters For example an input action of abc will match input data of OZCCaaaQQbJJJ42c 163 The width specifier indicates the maximum number of characters to be read for a conversion For example if 4d is a conversion that is being processed and the input buffer contains 102033456 then the maximum field width of 4 as specified in the conversion means that only 1020 from the start of the input buffer will be converted 163 The i input conversion specification means interpret as hexadecimal if the number starts with Ox or 0X interpret as octal if number starts with 0 otherwise interpret as decimal 163 Note that b reads binary data most significant byte first without doing any input conversion Thus 1b is equivalent to olc So if the input string is 123 456 UM0068A2 ERA3 Page 4 of 5 e b would set nCV to 49 ASCII 1
9. meter is 5 2mm Recess around mounting hole diameter ie max screw head diameter is 13 5mm Depth of recess ie max screw head height is 5 0mm 43 In section Always trying to sleep under Sleep Conditions the bullet point The DT800 s Host RS232 port RI Ring Indicator line has been asserted within the last 30 seconds is invalid The RI signal is ignored 43 In section Low Power Operation the DT800 may also be awoken if its serial sensor port receives a character or CTS changes to active 43 In the example LOGON should be LOGON 46 In the section Trigger on external event for edge triggering the minimum pulse width is approx 16ms This also applies to the software only counter channels C9 C16 see page 157 52 The default value of the m number of background measurements parameter for the FAST modifier is 10 not 2 52 The ADC frequency parameter passed to the FAST modifier is actually in Hz unlike P60 which is in kHz so the maximum and default is 100000 not 100 52 The default value of the mains frequency parameter for the FAST modifier is 0 not 1000 0 means sample at the specified clock rate without regard to mains frequency 54 Valid range of speed parameter for burst schedule is 50 Hz to 100000 Hz 57 Note that the burst mode analog trigger level is approximate and may differ slightly from the measured value on the trigger channel
10. not page 154 66 154 Digital State Outputs there are various inconsistencies and errors in relations to the behaviour and nature of the outputs The following statements clarify the situation e Outputs are pulled up to 3 3V not 5V and the value of the pull up resistor is 47k Ohms not 15k Ohms e The default state of outputs is ON high e The inputs are only usable when outputs are ON high e When controlling an external relay etc the output should be configured to sink current as per diagram on page 184 hence to turn the relay on you need to do 1DSO 0 69 Delete the last sentence in System Timers section about the timer being set to 0 if set to an out of range value 69 10SV also returns 0 for RX schedule 70 85 Multiple Reports The presence of statistical options for a channel does not require the presence of statistical options in every channel list 71 Input termination default is U for all channel types 72 The default excitation levels ie if just I or V or P is specified are not shown The values are I 1mA V 5000mV P 5000uW 73 For the Tn channel option see page 91 for a description of the formula that is used for thermistor scaling 74 Rainflow channel option should appear below the configuration line 80 Alarms Events Ini and Temp directories are not created on the memory card 83 For U from to from and to should be specified as date time or date not time d
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