E-M-HP22-V1_21
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroPalm HP22 hand-held indicator:
User Guide
Instruction Manual
Document Type
Page
11
of 16
Document title
© 2009-2010; Rotronic AG E-M-HP22-V1_21
5
Maintenance
5.1 Replacing the battery
To replace the battery, turn the latching button counter-clockwise and pull out the battery holder.
5.2 Service cable
Cable AC3006 converts UART (service connector) to USB and is used to connect the HP22 to a USB port
of a PC running the ROTRONIC HW4 software. Prior to using this cable, the ROTRONIC USB driver must
be installed on the PC. Both the driver and the installation instructions (document
E-M-HW4v2-Main
) are
located on the HW4 CD.
As an alternative, cable AC2001 is used to connect the HP22 to a probe input of the HP23 hand-held
calibrator. For service purposes, the HP23 offers essentially the same functionality as the HW4 software.
5.3 Location of the service connector (mini USB type)
WARNING
: the service connector is a UART
interface with a mini-USB connector type. Do not
connect the service connector directly to the USB
port of a PC or hub.
The service connector (UART interface) can be
accessed without opening the enclosure after
removing the protective red round cover.
