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

If the extended format setting is OFF (see Section 8.2.2.15, FOR
-
Mat:TDST:STAT), the measurement values are returned in a comma-delimited
format as follows:
<Ch1Temp>,<Ch1Humid>[,<Ch2Temp>,<Ch2Humid>]
The temperature values are always in the current temperature units. The humid
-
ity values are always in %RH.
If the extended format setting is ON, the measurements are returned in a
comma-delimited format as follows:
<MeasStatus>,<ChX>,<ChXTemp>,<TempUnits>,<ChXHumid>,%[,<ChY>,<
ChYTemp>,<TempUnits>,<ChYHumid>,%],<year>,<month>,<day>,<hour>,<
minute>,<second>
The measure status (<MeasStatus>) is 0 if these measurement values have been
read previously or 1 if these are new measurement values. If no channel num-
ber was specified, the measurements on both channels are returned (X = 1; Y =
2). Otherwise, only the measurements on the specified channel are returned. If
only new readings are desired, the FORM:TDST:STAT command can be used
to enable the extended format option and any readings in which the value of the
first field is 0 can be ignored.
8.2.2.14 FORMat:TDST:STATe?
Returns the time and date stamp enable for the FETC?, MEAS?, and READ?
commands.
Example: FORM:TDST:STAT?
Response: 0
A value of 1 is returned if the time and date stamp is enabled. A value of 0 is
returned if the time and date stamp is disabled.
8.2.2.15 FORMat:TDST:STATe <bool>
Sets the time and date stamp enable for the FETC?, MEAS?, and READ?
commands.
Example: FORM:TDST:STAT 1
The <bool> parameter turns the time and date stamp enable on (1 or ON) or off
(0 or OFF).
8.2.2.16 MEASure? [<chn>]
Returns a comma delimited list of the most recent measurements for the speci
-
fied channel or for both channels.
Example: MEAS? 1
Example 1: MEAS? 1
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8 Digital Communications Interface
Commands










