Fluke Calibration DewK User manual

Chipsmall Limited consists of a professional team with an average of over 10 year of expertise in the distribution
of electronic components. Based in Hongkong, we have already established firm and mutual-benefit business
relationships with customers from,Europe,America and south Asia,supplying obsolete and hard-to-find components
to meet their specific needs.
With the principle of “Quality Parts,Customers Priority,Honest Operation,and Considerate Service”,our business
mainly focus on the distribution of electronic components. Line cards we deal with include
Microchip,ALPS,ROHM,Xilinx,Pulse,ON,Everlight and Freescale. Main products comprise
IC,Modules,Potentiometer,IC Socket,Relay,Connector.Our parts cover such applications as commercial,industrial,
and automotives areas.
We are looking forward to setting up business relationship with you and hope to provide you with the best service
and solution. Let us make a better world for our industry!
Contact us
Tel: [phone] Fax: [phone]
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Address: A1208, Overseas Decoration Building, #122 Zhenhua RD., Futian, Shenzhen, China
  

1620A “DewK”
Thermo-Hygrometer
User’s Guide
January 2003 Rev. 1, 3/13
© 2003-2013 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.

LIMITED WARRANTY AND LIMITATION OF LIABILITY
Each Fluke product is warranted to be free from defects in material and workmanship under normal use and
service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and
services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of
a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in
Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal
conditions of operation or handling. Fluke warrants that software will operate substantially in accordance with
its functional specifications for 90 days and that it has been properly recorded on non-defective media. Fluke
does not warrant that software will be error free or operate without interruption.
Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers
only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is
available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the
applicable international price. Fluke reserves the right to invoice Buyer for importation costs of
repair/replacement parts when product purchased in one country is submitted for repair in another country.
Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair,
or replacement of a defective product which is returned to a Fluke authorized service center within the
warranty period.
To obtain warranty service, contact your nearest Fluke authorized service center to obtain return
authorization information, then send the product to that service center, with a description of the difficulty,
postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following
warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke
determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal
condition of operation or handling, including overvoltage failures caused by use outside the product’s
specified rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of repair
costs and obtain authorization before commencing the work. Following repair, the product will be returned to
the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges
(FOB Shipping Point).
THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE
FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSSES,
INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or
limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not
apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other
decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other
provision.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
11/99
To register your product online, visit register.fluke.com

Table of Contents
1 Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2.1 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2.2 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Authorized Service Centers. . . . . . . . . . . . . . . . . . . . . . 3
2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Specifications and Environmental Conditions . . . . . . . . . . 9
3.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Environmental Conditions. . . . . . . . . . . . . . . . . . . . . . 10
4 Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Use Proper Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3 Learn About the Features and Components . . . . . . . . . . . . . 11
4.4 Install the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.5 Connect the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.6 Connect the Power Source . . . . . . . . . . . . . . . . . . . . . 12
4.7 Switch the Power On . . . . . . . . . . . . . . . . . . . . . . . . 12
4.8 Measure Temperature . . . . . . . . . . . . . . . . . . . . . . . . 12
5 Parts and Controls . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2 Top Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.3 Right Side Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.4 Left Side Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.5 Back Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.6 Quick Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.7 Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.8 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 General Operation . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1 DC Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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6.2 Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.3 Sensor Configuration . . . . . . . . . . . . . . . . . . . . . . . . 20
6.4 Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.5 Power On Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.6 Display Contrast. . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.7 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.8 Alarm Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.9 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.10 Unit of Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.11 Recording Measurements . . . . . . . . . . . . . . . . . . . . . . 21
6.12 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.12.1 Sensor Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7 Menu Functions. . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.1 Channel Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.1.1 Channel Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.1.2 Sensor ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.1.3 Sensor Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.1.4 Sensor Cal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.2 Display Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.2.1 Display Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.2.2 Display Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.2.3 Field Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.2.4 Graph Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
7.2.5 Display Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.3 Data Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.3.1 Data Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7.3.1.1 Record Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.3.1.2 Data View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.3.1.3 Data Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.3.1.4 Data Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7.3.1.5 Data Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.3.2 Daily Stats. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.3.2.1 Stats Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.3.2.2 Stats View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.3.2.3 Stats Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.3.2.4 Stats Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.3.2.5 Stats Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7.4 Alarm Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.4.1 Alarm Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.4.2 Sensor Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.4.3 System Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.4.4 Alarm View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.5 System Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.5.1 System Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.5.2 Date Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
ii

7.5.3 Comm Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.5.3.1 Serial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.5.3.2 RF (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
7.5.3.3 LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
7.5.4 Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.5.5 System Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
8 Digital Communications Interface . . . . . . . . . . . . . . . 69
8.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
8.1.1 Serial RS-232 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
8.1.2 RF Wireless (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
8.1.3 LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
8.1.4 Command Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
8.2 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
8.2.1 Alarm Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
8.2.1.1 ALARm:BATTery? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
8.2.1.2 ALARm:BATTery:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
8.2.1.3 ALARm:BATTery:ENABle <bool> . . . . . . . . . . . . . . . . . . . . . . . . . . 80
8.2.1.4 ALARm:BEEP:ENABle?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
8.2.1.5 ALARm:BEEP:ENABle <bool> . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
8.2.1.6 ALARm:CLEar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
8.2.1.7 ALARm:DATE:FIRSt? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
8.2.1.8 ALARm:DATE:LAST?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
8.2.1.9 ALARm:DISPlay:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
8.2.1.10 ALARm:DISPlay:ENABle <bool>. . . . . . . . . . . . . . . . . . . . . . . . . . . 81
8.2.1.11 ALARm:PORT? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.2.1.12 ALARm:PORT <bool> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.2.1.13 ALARm:PORT:ENABle?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.2.1.14 ALARm:PORT:ENABle <bool> . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.2.1.15 ALARm:POWer? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.2.1.16 ALARm:POWer:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.2.1.17 ALARm:POWer:ENABle <bool> . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
8.2.1.18 ALARm:RHUMidity<chn>:LOWer? . . . . . . . . . . . . . . . . . . . . . . . . . 83
8.2.1.19 ALARm:RHUMidity<chn>:LOWer:ENABle?. . . . . . . . . . . . . . . . . . . . . 83
8.2.1.20 ALARm:RHUMidity<chn>:LOWer:ENABle <bool> . . . . . . . . . . . . . . . . . 83
8.2.1.21 ALARm:RHUMidity<chn>:LOWer:LIMit? [MIN|MAX|DEF] . . . . . . . . . . . . 83
8.2.1.22 ALARm:RHUMidity<chn>:LOWer:LIMit <float>|MIN|MAX|DEF . . . . . . . . . 84
8.2.1.23 ALARm:RHUMidity<chn>:RATE? . . . . . . . . . . . . . . . . . . . . . . . . . . 84
8.2.1.24 ALARm:RHUMidity<chn>:RATE:ENABle? . . . . . . . . . . . . . . . . . . . . . 84
8.2.1.25 ALARm:RHUMidity<chn>:RATE:ENABle <bool>. . . . . . . . . . . . . . . . . . 84
8.2.1.26 ALARm:RHUMidity<chn>:RATE:LIMit? [MIN|MAX|DEF] . . . . . . . . . . . . 85
8.2.1.27 ALARm:RHUMidity<chn>:RATE:LIMit <float>|MIN|MAX|DEF . . . . . . . . . . 85
8.2.1.28 ALARm:RHUMidity<chn>:SENSor? . . . . . . . . . . . . . . . . . . . . . . . . . 85
8.2.1.29 ALARm:RHUMidity<chn>:SENSor:ENABle? . . . . . . . . . . . . . . . . . . . . 85
8.2.1.30 ALARm:RHUMidity<chn>:SENSor:ENABle <bool> . . . . . . . . . . . . . . . . 86
8.2.1.31 ALARm:RHUMidity<chn>:UPPer? . . . . . . . . . . . . . . . . . . . . . . . . . . 86
8.2.1.32 ALARm:RHUMidity<chn>:UPPer:ENABle? . . . . . . . . . . . . . . . . . . . . . 86
8.2.1.33 ALARm:RHUMidity<chn>:UPPer:ENABle <bool> . . . . . . . . . . . . . . . . . 86
8.2.1.34 ALARm:RHUMidity<chn>:UPPer:LIMit? [MIN|MAX|DEF] . . . . . . . . . . . . 86
8.2.1.35 ALARm:RHUMidity<chn>:UPPer:LIMit <float>|MIN|MAX|DEF. . . . . . . . . . 87
8.2.1.36 ALARm:TEMPurature<chn>:LOWer?. . . . . . . . . . . . . . . . . . . . . . . . . 87
8.2.1.37 ALARm:TEMPurature<chn>:LOWer:ENABle? . . . . . . . . . . . . . . . . . . . . 87
8.2.1.38 ALARm:TEMPurature<chn>:LOWer:ENABle <bool> . . . . . . . . . . . . . . . . 87
8.2.1.39 ALARm:TEMPurature<chn>:LOWer:LIMit? [MIN|MAX|DEF] . . . . . . . . . . . 88
8.2.1.40 ALARm:TEMPurature<chn>:LOWer:LIMit <float>|MIN|MAX|DEF . . . . . . . . 88
8.2.1.41 ALARm:TEMPurature<chn>:RATE? . . . . . . . . . . . . . . . . . . . . . . . . . 88
8.2.1.42 ALARm:TEMPurature<chn>:RATE:ENABle? . . . . . . . . . . . . . . . . . . . . 88
8.2.1.43 ALARm:TEMPurature<chn>:RATE:ENABle <bool>. . . . . . . . . . . . . . . . . 89
8.2.1.44 ALARm:TEMPurature<chn>:RATE:LIMit? [MIN|MAX|DEF]. . . . . . . . . . . . 89
8.2.1.45 ALARm:TEMPurature<chn>:RATE:LIMit <float>|MIN|MAX|DEF . . . . . . . . . 89
iii

8.2.1.46 ALARm:TEMPurature<chn>:SENSor? . . . . . . . . . . . . . . . . . . . . . . . . 89
8.2.1.47 ALARm:TEMPurature<chn>:SENSor:ENABle? . . . . . . . . . . . . . . . . . . . 90
8.2.1.48 ALARm:TEMPurature<chn>:SENSor:ENABle <bool>. . . . . . . . . . . . . . . . 90
8.2.1.49 ALARm:TEMPurature<chn>:UPPer? . . . . . . . . . . . . . . . . . . . . . . . . . 90
8.2.1.50 ALARm:TEMPurature<chn>:UPPer:ENABle? . . . . . . . . . . . . . . . . . . . . 90
8.2.1.51 ALARm:TEMPurature<chn>:UPPer:ENABle <bool> . . . . . . . . . . . . . . . . 90
8.2.1.52 ALARm:TEMPurature<chn>:UPPer:LIMit? [MIN|MAX|DEF] . . . . . . . . . . . 91
8.2.1.53 ALARm:TEMPurature<chn>:UPPer:LIMit <float>|MIN|MAX|DEF. . . . . . . . . 91
8.2.1.54 ALARm:TIME:FIRSt? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
8.2.1.55 ALARm:TIME:LAST? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
8.2.2 Measurement Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
8.2.2.1 CALCulate:AVERage:CLEar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
8.2.2.2 CALCulate<chn>:DEWPoint? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
8.2.2.3 CALCulate<chn>:HINDex? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
8.2.2.4 CALCulate<chn>:PARameter<num>:AVERage<type>? . . . . . . . . . . . . . . . 92
8.2.2.5 CALCulate[<chn>]:PARameter[<num>]:AVERage[<type>]:CLEar . . . . . . . . . 92
8.2.2.6 CALCulate[<chn>]:PARameter[<num>]:AVERage[<type>]:DATA? . . . . . . . . . 93
8.2.2.7 CALCulate[<chn>]:PARameter<num>:AVERage<type>:TYPE?. . . . . . . . . . . 93
8.2.2.8 CALCulate<chn>:PARameter<num>:RATE? . . . . . . . . . . . . . . . . . . . . . 93
8.2.2.9 CALCulate[<chn>]:PARameter[<num>]:RATE:TIME? [MIN|MAX|DEF]. . . . . . 93
8.2.2.10 CALCulate[<chn>]:PARameter[<num>]:RATE:TIME <num>|MIN|MAX|DEF . . . 93
8.2.2.11 CALCulate[<chn>]:PARameter<num>:RESolution? [MIN|MAX|DEF] . . . . . . . 94
8.2.2.12 CALCulate[<chn>]:PARameter<num>:RESolution <num>|MIN|MAX|DEF. . . . . 94
8.2.2.13 FETCh? [<chn>] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
8.2.2.14 FORMat:TDST:STATe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
8.2.2.15 FORMat:TDST:STATe <bool> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
8.2.2.16 MEASure? [<chn>] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
8.2.2.17 READ? [<chn>]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
8.2.3 Data Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
8.2.3.1 DATa:DSTatistics:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
8.2.3.2 DATa:DSTatistics:ENABle <bool>. . . . . . . . . . . . . . . . . . . . . . . . . . . 96
8.2.3.3 DATa:DSTatistics:HOUR? [MIN|MAX|DEF] . . . . . . . . . . . . . . . . . . . . . 97
8.2.3.4 DATa:DSTatistics:HOUR <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . . . 97
8.2.3.5 DATa:DSTatistics:RENable? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
8.2.3.6 DATa:DSTatistics:RENable <bool> . . . . . . . . . . . . . . . . . . . . . . . . . . 97
8.2.3.7 DATa:DSTatistics:RHOur? [MIN|MAX|DEF] . . . . . . . . . . . . . . . . . . . . . 97
8.2.3.8 DATa:DSTatistics:RHOur <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . . . 98
8.2.3.9 DATa:DSTatistics:RECord:BTIMe? [<num>] . . . . . . . . . . . . . . . . . . . . . 98
8.2.3.10 DATa:DSTatistics:RECord:CLEar . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
8.2.3.11 DATa:DSTatistics:RECord:COUNt? [<MAX>] . . . . . . . . . . . . . . . . . . . . 98
8.2.3.12 DATa:DSTatistics:RECord:DATE? [<num>]. . . . . . . . . . . . . . . . . . . . . . 98
8.2.3.13 DATa:DSTatistics:RECord:ETIMe? [<num>] . . . . . . . . . . . . . . . . . . . . . 99
8.2.3.14 DATa:DSTatistics:RECord:FIND? (<year>,<month>,<day>) . . . . . . . . . . . . . 99
8.2.3.15 DATa:DSTatistics:RECord:VALue? <num>,<chn>,<type> . . . . . . . . . . . . . . 99
8.2.3.16 DATa:RECord:CLEar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
8.2.3.17 DATa:RECord:FEED:RHUMidity<chn>? . . . . . . . . . . . . . . . . . . . . . . . 99
8.2.3.18 DATa:RECord:FEED:RHUMidity<chn> <bool> . . . . . . . . . . . . . . . . . . . 100
8.2.3.19 DATa:RECord:FEED:TEMPerature<chn>? . . . . . . . . . . . . . . . . . . . . . 100
8.2.3.20 DATa:RECord:FEED:TEMPerature<num> <bool> . . . . . . . . . . . . . . . . . 100
8.2.3.21 DATa:RECord:FREE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
8.2.3.22 DATa:RECord:OPEN? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
8.2.3.23 DATa:RECord:OPEN [(<year>,<month>,<day>,<hour>,<minute>,<sec-
ond>)[,(<year>,<month>,<day>,<hour>,<minute>,<second>)]] . . . . . . . . . . . . . . . . 101
8.2.3.24 DATa:RECord:READ? [<num>] . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
8.2.3.25 DATa:RECord:TIME? [MIN|MAX|DEF] . . . . . . . . . . . . . . . . . . . . . . . 102
8.2.3.26 DATa:RECord:TIME <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . . . . . 102
8.2.4 Measurement Control Commands. . . . . . . . . . . . . . . . . . . . . . . 102
8.2.4.1 INITiate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
8.2.4.2 INITiate:CONTinuous? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
8.2.4.3 SENSor:AVERage? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
8.2.4.4 SENSor:AVERage <bool> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
8.2.4.5 SENSor<chn>:LOCK? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
8.2.4.6 SENSor<chn>:LOCK <bool>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
8.2.4.7 SENSor<chn>:IDENtification? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
iv

8.2.4.8 SENSor<chn>:IDENtification <str> . . . . . . . . . . . . . . . . . . . . . . . . . 103
8.2.4.9 SENSor<chn>:STATe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
8.2.4.10 TRIGger:TIMer? [MIN|MAX|DEF] . . . . . . . . . . . . . . . . . . . . . . . . . 104
8.2.4.11 TRIGger:TIMer <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . . . . . . . . 104
8.2.5 Channel Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
8.2.5.1 ROUTe:CLOSe? <chn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
8.2.5.2 ROUTe:CLOSe <chn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
8.2.5.3 ROUTe:OPEN? <chn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
8.2.5.4 ROUTe:OPEN <chn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
8.2.6 Calibration Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
8.2.6.1 CALibrate<chn>:ALERt? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
8.2.6.2 CALibrate<chn>:ALERt <bool> . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
8.2.6.3 CALibrate<chn>:DATE:CALibrate? . . . . . . . . . . . . . . . . . . . . . . . . . 106
8.2.6.4 CALibrate<chn>:DATE:CALibrate (<year>,<month>,<day>). . . . . . . . . . . . 106
8.2.6.5 CALibrate<chn>:DATE:DUE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
8.2.6.6 CALibrate<chn>:DATE:DUE (<year>,<month>,<day>). . . . . . . . . . . . . . . 107
8.2.6.7 CALibrate<chn>:EXPired? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
8.2.6.8 CALibrate<chn>:PARameter:OFFSet<num>? . . . . . . . . . . . . . . . . . . . . 107
8.2.6.9 CALibrate<chn>:PARameter:OFFSet<num> <float> . . . . . . . . . . . . . . . . 107
8.2.6.10 CALibrate<chn>:PARameter:SCALe<num>? . . . . . . . . . . . . . . . . . . . . 107
8.2.6.11 CALibrate<chn>:PARameter:SCALe<num> <float> . . . . . . . . . . . . . . . . 108
8.2.7 System Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
8.2.7.1 *IDN? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
8.2.7.2 *OPT? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
8.2.7.3 *RST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
8.2.7.4 SYSTem:BEEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
8.2.7.5 SYSTem:BOOT:VERSion? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
8.2.7.6 SYSTem:ERRor? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
8.2.7.7 SYSTem:CODE:VERSion? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
8.2.7.8 SYSTem:VERSion? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
8.2.7.9 UNIT:TEMPerature? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
8.2.7.10 UNIT:TEMPerature <unit> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
8.2.8 Communication Interface Commands . . . . . . . . . . . . . . . . . . . . . 110
8.2.8.1 SYSTem:COMMunicate:RADio:CHANnel? . . . . . . . . . . . . . . . . . . . . . 110
8.2.8.2 SYSTem:COMMunicate:RADio:CHANnel <num> . . . . . . . . . . . . . . . . . 110
8.2.8.3 SYSTem:COMMunicate:RADio:ENABle?. . . . . . . . . . . . . . . . . . . . . . 110
8.2.8.4 SYSTem:COMMunicate:RADio:ENABle <bool> . . . . . . . . . . . . . . . . . . 110
8.2.8.5 SYSTem:COMMunicate:RADio:INSTrument? . . . . . . . . . . . . . . . . . . . 110
8.2.8.6 SYSTem:COMMunicate:RADio:INSTrument <num> . . . . . . . . . . . . . . . . 110
8.2.8.7 SYSTem:COMMunicate:RADio:MODem? . . . . . . . . . . . . . . . . . . . . . 110
8.2.8.8 SYSTem:COMMunicate:RADio:MODem <num> . . . . . . . . . . . . . . . . . . 110
8.2.8.9 SYSTem:COMMunicate:RADio:OPTion? . . . . . . . . . . . . . . . . . . . . . . 111
8.2.8.10 SYSTem:COMMunicate:RADio:PAN?. . . . . . . . . . . . . . . . . . . . . . . . 111
8.2.8.11 SYSTem:COMMunicate:RADio:PAN <num> . . . . . . . . . . . . . . . . . . . . 111
8.2.8.12 SYSTem:COMMunicate:RADio:SIGNal? . . . . . . . . . . . . . . . . . . . . . . 111
8.2.8.13 SYSTem:COMMunicate:RADio:SNUMber?. . . . . . . . . . . . . . . . . . . . . 111
8.2.8.14 SYSTem:COMMunicate:SERial:BAUD? [MIN|MAX|DEF]. . . . . . . . . . . . . 111
8.2.8.15 SYSTem:COMMunicate:SERial:BAUD <baud>|MIN|MAX|DEF. . . . . . . . . . 111
8.2.8.16 SYSTem:COMMunicate:SERial:FDUPlex? . . . . . . . . . . . . . . . . . . . . . 111
8.2.8.17 SYSTem:COMMunicate:SERial:FDUPlex <bool>. . . . . . . . . . . . . . . . . . 112
8.2.8.18 SYSTem:COMMunicate:SERial:FEED? . . . . . . . . . . . . . . . . . . . . . . . 112
8.2.8.19 SYSTem:COMMunicate:SERial:FEED <bool> . . . . . . . . . . . . . . . . . . . 112
8.2.8.20 SYSTem:COMMunicate:SERial:LINefeed? . . . . . . . . . . . . . . . . . . . . . 112
8.2.8.21 SYSTem:COMMunicate:SERial:LINefeed <bool> . . . . . . . . . . . . . . . . . 112
8.2.8.22 SYSTem:COMMunicate:SERial:TIMe? [MIN|MAX|DEF] . . . . . . . . . . . . . 112
8.2.8.23 SYSTem:COMMunicate:SERial:TIMe <num>|MIN|MAX|DEF . . . . . . . . . . 113
8.2.8.24 SYSTem:COMMunicate:SOCKet:ADDRess? . . . . . . . . . . . . . . . . . . . . 113
8.2.8.25 SYSTem:COMMunicate:SOCKet:ADDRess <addr> . . . . . . . . . . . . . . . . 113
8.2.8.26 SYSTem:COMMunicate:SOCKet:COMMand? . . . . . . . . . . . . . . . . . . . 113
8.2.8.27 SYSTem:COMMunicate:SOCKet:DHCP? . . . . . . . . . . . . . . . . . . . . . . 113
8.2.8.28 SYSTem:COMMunicate:SOCKet:DHCP <bool> . . . . . . . . . . . . . . . . . . 113
8.2.8.29 SYSTem:COMMunicate:SOCKet:ENABle? . . . . . . . . . . . . . . . . . . . . . 113
8.2.8.30 SYSTem:COMMunicate:SOCKet:ENABle <bool> . . . . . . . . . . . . . . . . . 113
8.2.8.31 SYSTem:COMMunicate:SOCKet:GATeway? . . . . . . . . . . . . . . . . . . . . 114
v

8.2.8.32 SYSTem:COMMunicate:SOCKet:GATeway <addr>. . . . . . . . . . . . . . . . . 114
8.2.8.33 SYSTem:COMMunicate:SOCKet:HTML? . . . . . . . . . . . . . . . . . . . . . . 114
8.2.8.34 SYSTem:COMMunicate:SOCKet:MAC?. . . . . . . . . . . . . . . . . . . . . . . 114
8.2.8.35 SYSTem:COMMunicate:SOCKet:MASK? . . . . . . . . . . . . . . . . . . . . . . 114
8.2.8.36 SYSTem:COMMunicate:SOCKet:MASK <addr> . . . . . . . . . . . . . . . . . . 114
8.2.8.37 SYSTem:KLOCkout? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
8.2.8.38 SYSTem:KLOCkout <bool> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
8.2.8.39 SYSTem:POWer:BATTery? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
8.2.9 Date and Time Commands . . . . . . . . . . . . . . . . . . . . . . . . . . 115
8.2.9.1 SYSTem:DATE?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
8.2.9.2 SYSTem:DATE (<year>,<month>,<day>) . . . . . . . . . . . . . . . . . . . . . . 115
8.2.9.3 SYSTem:DATE:FORMat? [MIN|MAX|DEF] . . . . . . . . . . . . . . . . . . . . 115
8.2.9.4 SYSTem:DATE:FORMat <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . . . 115
8.2.9.5 SYSTem:DECimal:FORMat? [MIN|MAX|DEF] . . . . . . . . . . . . . . . . . . . 116
8.2.9.6 SYSTem:DECimal:FORMat <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . 116
8.2.9.7 SYSTem:TIME? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
8.2.9.8 SYSTem:TIME (<hour>,<minute>,<second>) . . . . . . . . . . . . . . . . . . . . 116
8.2.9.9 SYSTem:TIME:DAYLight? [MIN|MAX|DEF] . . . . . . . . . . . . . . . . . . . . 117
8.2.9.10 SYSTem:TIME:DAYLight <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . . 117
8.2.9.11 SYSTem:TIME:FORMat? [MIN|MAX|DEF] . . . . . . . . . . . . . . . . . . . . 117
8.2.9.12 SYSTem:TIME:FORMat <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . . . 117
8.2.10 Password Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
8.2.10.1 SYSTem:PASSword:ALARm? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
8.2.10.2 SYSTem:PASSword:ALARm <bool> . . . . . . . . . . . . . . . . . . . . . . . . 118
8.2.10.3 SYSTem:PASSword:CDISable . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
8.2.10.4 SYSTem:PASSword:CENable <pass> . . . . . . . . . . . . . . . . . . . . . . . . 118
8.2.10.5 SYSTem:PASSword:CENable:STATe? . . . . . . . . . . . . . . . . . . . . . . . . 118
8.2.10.6 SYSTem:PASSword:COMM?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
8.2.10.7 SYSTem:PASSword:COMM <bool> . . . . . . . . . . . . . . . . . . . . . . . . . 119
8.2.10.8 SYSTem:PASSword:NEW <pass>|DEF . . . . . . . . . . . . . . . . . . . . . . . 119
8.2.10.9 SYSTem:PASSword:RECord? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
8.2.10.10 SYSTem:PASSword:RECord <bool> . . . . . . . . . . . . . . . . . . . . . . . . . 119
8.2.10.11 SYSTem:PASSword:SENSor? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
8.2.10.12 SYSTem:PASSword:SENSor <bool> . . . . . . . . . . . . . . . . . . . . . . . . . 120
8.2.10.13 SYSTem:PASSword:STATistics? . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
8.2.10.14 SYSTem:PASSword:STATistics <bool> . . . . . . . . . . . . . . . . . . . . . . . 120
8.2.10.15 SYSTem:PASSword:TIME? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
8.2.10.16 SYSTem:PASSword:TIME <bool> . . . . . . . . . . . . . . . . . . . . . . . . . . 120
8.2.11 Status Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
8.2.11.1 *CLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
8.2.11.2 *ESE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
8.2.11.3 *ESE <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
8.2.11.4 *ESR? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
8.2.11.5 *SRE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
8.2.11.6 *SRE <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
8.2.11.7 *STB? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
8.2.11.8 *TST? [<bool>] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
8.2.11.9 STATus:ALARm? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
8.2.11.10 STATus:ALARm:CONDition? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
8.2.11.11 STATus:ALARm:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
8.2.11.12 STATus:ALARm:ENABle <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . . 126
8.2.11.13 STATus:MEASure? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
8.2.11.14 STATus:MEASure:CONDition? . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
8.2.11.15 STATus:MEASure:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
8.2.11.16 STATus:MEASure:ENABle <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . 127
8.2.11.17 STATus:OPERation? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
8.2.11.18 STATus:OPERation:CONDition? . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
8.2.11.19 STATus:OPERation:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
8.2.11.20 STATus:OPERation:ENABle <num>|MIN|MAX|DEF . . . . . . . . . . . . . . . . 129
8.2.11.21 STATus:QUEStionable? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
8.2.11.22 STATus:QUEStionable:CONDition? . . . . . . . . . . . . . . . . . . . . . . . . . 130
8.2.11.23 STATus:QUEStionable:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . 130
8.2.11.24 STATus:QUEStionable:ENABle <num>|MIN|MAX|DEF . . . . . . . . . . . . . . 130
8.2.12 Date and Time Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
vi

9 Calibration Procedure . . . . . . . . . . . . . . . . . . . . . 133
9.1 Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
9.2 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
9.3 Calibration Points . . . . . . . . . . . . . . . . . . . . . . . . . 133
9.4 Temperature and Humidity Measurement Errors . . . . . . . . . 134
9.5 Temperature and Humidity Adjustments . . . . . . . . . . . . . 135
10 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 137
11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 139
11.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 139
11.1.1 Incorrect temperature or humidity reading . . . . . . . . . . . . . . . . . . 139
11.1.2 Missing or Scattered Graph Data . . . . . . . . . . . . . . . . . . . . . . . 139
11.1.3 Blank screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
11.1.4 Error message at power up. . . . . . . . . . . . . . . . . . . . . . . . . . . 139
11.1.5 Self-Test Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
11.1.6 Start-up Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
11.1.7 Error Messages during Normal Operation. . . . . . . . . . . . . . . . . . . 141
11.2 Downloading Recorded Data . . . . . . . . . . . . . . . . . . . 141
11.3 CE Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
11.3.1 EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
11.3.1.1 Immunity Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
11.3.1.2 Emission Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
11.3.2 Low Voltage Directive (Safety) . . . . . . . . . . . . . . . . . . . . . . . . 143
11.3.3 RF Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
11.3.3.1 United States. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
11.3.3.2 Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
11.3.3.3 Europe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
11.4 Frequently Asked Questions . . . . . . . . . . . . . . . . . . . 144
vii

viii
Figures
Figure 1 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 2 Top Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 3 Right and Left Side View . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 4 Back Panel (RF option shown). . . . . . . . . . . . . . . . . . . . . . 17
Figure 5 Main Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 6 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 7 Channel Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 8 Channel Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 9 Sensor ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 10 Sensor Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 11 Sensor Cal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 12 Sensor Channel Select . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 13 Display Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 14 Display Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 15 Display Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 16 Field Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 17 Graph Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 18 Graph Scale , Select Zone . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 19 Display Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 20 Data Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 21 Data Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 22 Record Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 23 Data View, Begin Time. . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 24 Data View, Numeric Format . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 25 Data Print. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 26 Data Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 27 Data Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 28 Daily Stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 29 Stats Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 30 Stats View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 31 Stats Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 32 Stats Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 33 Stats Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 34 Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 35 Alarm Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 36 Sensor Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 37 System Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 38 Alarm View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Figure 39 System Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Figure 40 System Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

ix
Figure 41 Date Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Figure 42 Comm Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Figure 43 Serial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Figure 44 RF Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Figure 45 Lan Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Figure 46 Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Figure 47 System Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Figure 48 Serial Cable Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

x
Tables
Table 1 International Electrical Symbols . . . . . . . . . . . . . . . . . . . . . 1
Table 2 Statistics Zone Field Types. . . . . . . . . . . . . . . . . . . . . . . . 34
Table 3 Approximate Data Storage Capacity . . . . . . . . . . . . . . . . . . . 41
Table 4 Alphabetical List Commands . . . . . . . . . . . . . . . . . . . . . . 72
Table 4 Alphabetical List Commands continued . . . . . . . . . . . . . . . . . 73
Table 4 Alphabetical List Commands continued . . . . . . . . . . . . . . . . . 74
Table 4 Alphabetical List Commands continued . . . . . . . . . . . . . . . . . 75
Table 4 Alphabetical List Commands continued . . . . . . . . . . . . . . . . . 76
Table 4 Alphabetical List Commands continued . . . . . . . . . . . . . . . . . 77
Table 4 Alphabetical List Commands continued . . . . . . . . . . . . . . . . . 78

1 Before You Start
1.1 Symbols Used
Table 1 lists the International Electrical Symbols. Some or all of these symbols
may be used on the instrument or in this manual.
Symbol Description
AC (Alternating Current)
AC-DC
Battery
CE Complies with European Union Directives
DC (Direct Current)
Double Insulated
Electric Shock
Fuse
PE Ground
Hot Surface (Burn Hazard)
Read the User’s Manual (Important Information)
Off
On
1
1 Before You Start
Symbols Used
Table 1 International Electrical Symbols

Symbol Description
Canadian Standards Association
OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 re-
fers to the level of Impulse Withstand Voltage protection provided. Equipment of
OVERVOLTAGE CATEGORY II is energy-consuming equipment to be supplied from
the fixed installation. Examples include household, office, and laboratory appliances.
C-TIC Australian EMC Mark
The European Waste Electrical and Electronic Equipment (WEEE) Directive
(2002/96/EC) mark.
1.2 Safety Information
Use this instrument only as specified in this manual. Otherwise, the protection
provided by the instrument may be impaired.
The following definitions apply to the terms “Warning” and “Caution”.
•“Warning” identifies conditions and actions that may pose hazards to the
user.
•“Caution” identifies conditions and actions that may damage the instru-
ment being used.
1.2.1 Warnings
To avoid personal injury, follow these guidelines.
•DO NOT use this unit in environments other than those listed in the
User's Guide.
•Follow all safety guidelines listed in the User's Guide.
•Calibration equipment should only be used by trained personnel.
•The AC adapter can present safety concerns if misused or damaged. To
avoid the risk of electric shock or fire, do not use the AC adapter outdoors
or in a dusty, dirty, or wet environment. If the cord, case, or plug of the
adapter is damaged in any way, discontinue its use immediately and have
it replaced.
•Never disassemble the AC adapter. Use only the AC adapter provided
with the instrument or equivalent adapter recommended by the manufac-
turer of this instrument.
•The AC adapter has circuits with high voltage inside that could present
danger of electrical shock or fire if exposed. If the AC adapter is damaged
in any way or becomes hot, discontinue its use immediately, disconnect it
from any AC supply, and have it replaced. Do not attempt to open, repair,
or continue using a damaged or defective AC adapter.
1620A “DewK” Thermo-hygrometer
User’s Guide
2

•The instrument battery can present danger if not handled properly. To
avoid the risk of exposure to dangerous substances or explosion, immedi-
ately remove the battery and discontinue use if it leaks or becomes dam-
aged. Never allow the battery to be shorted, heated, punctured, or
dropped. If the instrument is physically damaged, immediately remove
the battery to insure that it does not become shorted. While removed from
the instrument, store the battery in a location so that it will not come into
contact with metal or fluids that might short circuit the battery and where
it is safe from excessive temperatures.
•Used batteries must be disposed of properly. Check your local regulations
for additional information. Never dispose of batteries in fire which may
result in explosion with the possibility of personal injury or property dam-
age.
1.2.2 Cautions
•If the instrument is dropped, struck, or handled in a way that causes inter-
nal or external physical damage, immediately unplug the AC adapter, re-
move the battery, discontinue use, and contact an Authorized Service
Center. Do not attempt to disassemble or repair the instrument, battery, or
AC adapter. Refer repairs or replacement components to an Authorized
Service Center.
•The instrument and sensors are sensitive and can be easily damaged. Al-
ways handle these devices with care. DO NOT allow them to be dropped,
struck, stressed, or overheated.
•Sensors are fragile devices which can be damaged by mechanical shock,
overheating, and exposure to fluids. Damage may not be visibly apparent
but can cause drift, instability, and loss of accuracy. Observe the following
precautions:
•DO NOT allow sensors to be dropped, struck, or stressed.
•DO NOT overheat sensors beyond their recommended temperature range.
•Keep the sensors clean and away from fluids and dust.
1.3 Authorized Service Centers
Please contact one of the following authorized Service Centers to coordinate
service on your Hart product:
Fluke Corporation, Hart Scientific Division
799 E. Utah Valley Drive
American Fork, UT 84003-9775
USA
Phone: [phone]
3
1 Before You Start
Authorized Service Centers

Telefax: +1.801.763.1010
E-mail: [email protected]
Fluke Nederland B.V.
Customer Support Services
Science Park Eindhoven 5108
5692 EC Son
NETHERLANDS
Phone: [phone]
Telefax: [phone]
E-mail: [email protected]
Fluke Int'l Corporation
Service Center - Instrimpex
Room 2301 Sciteck Tower
22 Jianguomenwai Dajie
Chao Yang District
Beijing 100004, PRC
CHINA
Phone: [phone]
Telefax: [phone]
E-mail: [email protected]
Fluke South East Asia Pte Ltd.
Fluke ASEAN Regional Office
Service Center
60 Alexandra Terrace #03-16
The Comtech (Lobby D)
118502
SINGAPORE
Phone: [phone]
Telefax: [phone]
E-mail: [email protected]
When contacting these Service Centers for support, please have the following
information available:
1620A “DewK” Thermo-hygrometer
User’s Guide
4

•Model Number
•Serial Number
•Voltage
•Complete description of the problem
5
1 Before You Start
Authorized Service Centers

2 Introduction
Fluke’s Hart Scientific Division’s 1620A is a low-cost, high-accuracy, digital
thermo-hygrometer. Its unique combination of features makes it suitable for a
wide variety of applications from laboratory to industrial ambient measure-
ment. Features of the thermo-hygrometer include:
•Two channels measure ambient temperature to ±0.125 C and %RH to
±1.5%
•Two sensor capability (second sensor optional), each measuring tempera-
ture and relative humidity; each is detachable, cable-extendable, and inter-
changeable, with self-contained calibration; each may be assigned a
unique 16-character identification
•Display resolution is user selectable up to 0.001 C and 0.01% RH
•On-board memory holds up to 400,000 time/date-stamped readings
•Serial RS-232 interface for reading measurements and access to settings
•Ethernet LAN interface provides TCP/IP communicatins and embedded
HTML web page for reading measurements over a network
•Optional wireless RF 802.15.4 (ZigBee) for remote operation
•Visual and audio alarms for various alarm or fault conditions, alarm out-
put port
•May be wall mounted or set on a bench top
•Detachable sensors contain their own calibration data for easy
recalibrations
•Optional software logs in real-time or shows graphical/statistical data
•Password protection of settings
•Large LCD displays temperature and humidity data graphically, numeri-
cally, and statistically; 16 pre-defined, user-changeable screen setups
•Power 12 VDC from external 110-240 VAC to DC converter
•Uses a standard 9V battery backup to allow continued measuring during
power interruptions
7
2 Introduction