Instructions
Table Of Contents
- 1620A “DewK” Thermo-Hygrometer
- 1 Before You Start
- 2 Introduction
- 3 Specifications and EnvironmentalConditions
- 4 Quick Start
- 5 Parts and Controls
- 6 General Operation
- 7 Menu Functions
- 8 Digital Communications Interface
- 9 Calibration Procedure
- 10 Maintenance
- 11 Troubleshooting
- Index
On power up the thermo-hygrometer performs a series of self-tests to check the
operation of all its components and each of the sensors. The results of the
self-tests are reported on the screen. Normally, all tests report ‘OK’. Below is a
table of error messages and recommended actions to correct the error. Often
these errors can be corrected by completing the actions listed. A failure of one
or more component causes error messages to be reported.
Contact a Hart Scientific Authorized Service Center for assistance (see Section
1.3).
11.1.5 Self-Test Error Messages
SYSTEMS: SERIAL PORT FAILURE Cycle the power. Contact an Authorized Service Center.
RF:DETECTED Configuration memory lost. Contact an Authorized Service
Center
RF: NOT DETECTED RF device not installed or failed. Contact an Authorized Service
Center
LAN: FAIL or INVALID LAN port failed. Contact an Authorized Service Center
BATTERY: FAILURE Cycle the power. Contact an Authorized Service Center.
BATTERY: NOT INSTALLED Check that a battery is properly installed. Replace the battery.
CLOCK: INVALID TIME Set the time/date.
MEMORY DATA: EMPTY Contact an Authorized Service Center.
MEMORY DATA: QUESTIONABLE Cycle the power. Contact an Authorized Service Center.
SENSOR <n>: NOT ATTACHED Check that the sensors are properly inserted into their sockets
or attached with an undamaged extension cable.
SENSOR <n>: LOCKED Attach the correct sensor or, if a new sensor is to be used, un-
lock the sensor using CHANNEL-SENSOR LOCK.
SENSOR <n>: CALIBRATION INVALID Cycle the power. Try a different sensor. Contact an Authorized
Service Center.
SENSOR <n>: CALIBRATION EXPIRED Contact an Authorized Service Center to have the sensor
recalibrated. Check the time/date to make sure it is correct.
POWER DOWN: CALCULATION
ERROR
Contact an Authorized Service Center.
POWER DOWN: SOFTWARE RESET Contact an Authorized Service Center.
POWER DOWN: HARDWARE RESET Contact an Authorized Service Center.
BUTTONS: <button name>... Check to make sure the buttons are not being pressed. Cycle
the power. Contact an Authorized Service Center.
11.1.6 Start-up Error Messages
Error messages may appear after the self-test. If this happens, contact a Hart
Scientific Authorized Service Center for assistance.
1620A “DewK” Thermo-hygrometer
User’s Guide
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