HT instruments HT7051 User Manual
Page 7
HT2055
EN - 6
4 DESCRIPTION OF PARTS
4.1 HT2055S STATION UNIT DESCRIPTION
Fig. 1: HT2055S unit description
CAPTION:
1
Protection fuse on mains (see § 11.1)
2
Switch for supply voltage selection (110/230V)
3
ON/OFF
key to switch the instrument ON or OFF
4
Input connector for mains cord
5
RS-232 galvanic port for connection to HT2055M unit
6
C1/H terminal for connection of auxiliary earth probe
7
P1/S for connection of auxiliary voltage probe
8
P2/ES for connection of auxiliary current probe
9
C2/E for connection of auxiliary earth probe
10
HELP
key
11 – 12
and
keys for function selection and parameter settings
13
LCD display with backlit
14
Key for adjust contrast of display
15
MEM
key for access to internal memory (see § 8)
16
ESC
key to return at previous screen
17
, , , arrow keys and TEST key to activation measurements
4.1.1 Modify of supply voltage for HT2055S unit
1. Open the fuses compartment (see Fig. 1 – Part 1) with a screwdriver
2. Extract the red switch (see Fig. 1 – Part 2) from the fuses compartment
3. Rotate the switch in way to correctly read the “115V” or “230V” indication
correspondent to the desired supply voltage
4. Restore the switch in the fuses compartment and close it