HT instruments HT7051 - Manual (Page 15)

HT2055
EN - 14
6.2 ADJUST CONTRAST OF DISPLAY
1. Press the
key. The following screen is shown:
2. Use the  or  keys to reduce or increase the contrast percentage of display
3. Press the TEST key to confirm the operation or the ESC key to exit from this function
6.3 HELP SCREENS
1. Pressing screen to display the help screen correspondent to the selected function
2. Use the  or  keys to select the other help screens
3. Press ESC key to exit and go back to the previous screen
6.4 MESSAGES AT DISPLAY
The below messages/screens can be displayed by the station meter:
Voltage between test terminals C1/H and C2/E is higher than
allowed (>10 V). Disconnect the test leads and check why an
external voltage was detected
During current generation output was overloaded or test current
abruptly fell down. Overload can be caused by high spurious earth
current. In this case it is recommended to decrease the output power
(see § 6.1.2)
Output current is too low (< 0.2A). A too low current can be caused
because of bad connection or high probe resistance
Date / time was changed in the station and consequently the
synchronization between station and meter gets lost. The current
logger must be cleared. Before clearing it its contents can be
downloaded to the meter
Output power is not set to maximum
Measurement is running
Results can be stored
High electrical noise was detected during measurement. Results may be
impaired
High resistance of current (c) and/ or voltage (p) probes. Results may be
impaired