HT instruments HT7051 - Manual (Page 11)

HT2055
EN - 10
5.1.3 Synchronization
Selecting this option will allow to upload different data from the station unit to the meter
unit. The possible options are:
 Synchronization of the actual time/date and the generated current
 Uploading of test current results for Step / Contact voltage calculation
 Uploading of earth resistance and ground resistivity results
Fig. 9: Synchronization screen
1. Press or keys to enter Settings menu
2. Select the item “Synchronize” with the  or  keys and press TEST key
3. Connect both units by using the PS/2-RS-232 supplied cable
4. Select one of the below options with the  or  keys and confirm with TEST key
TIME, CURRENT
Station’s time and date will be uploaded to the meter. Value
of generator current will be uploaded to the meter
STEP/CONTACT VOLT
Values of logged generator currents I
GEN
will be uploaded to
the Meter for calculation of Step voltage or Contact voltage
EARTH RESULT
Stored earth resistance or ground resistivity results in the
station will be uploaded to the meter
5. Press ESC key to exit and go back to the previous screen
CAUTION
 The main purpose of the Time/ Current synchronization is to enable a
correction of the step and contact voltage results after the test. During the
test the step and contact voltage results are calculated based on the I
GEN
set on the meter. After the test the obtained results can be updated with
the real generator currents I
GEN
measured at the same time with the
station. The stored U
STEP
and U
CONTACT
values are then corrected
according to the following formula:
SET
generated actually GEN
STEPold STEPnew
I
I
U U
) _ (  
SET
generated actually GEN
CONTold CONTnew
I
I
U U
) _ (  
 The synchronization is active for 24 h
 If date / time are changed on the meter or station the synchronization of
time and date will be lost. The current logger must be cleared before it can
proceed with measurements. Before clearing it you can download its
content to the meter