User's Manual

Table Of Contents
Installation, Operation and Service Manual 90DIB500R41IM_FCC02 99.1 161
DIB-500 R4.1 Function tests and operating surveillance
Function tests and operating surveillance GPS
Messages if the voltage supply is switched off
The voltage supply for the GPS antenna in the GPS module features a short-circuit
monitoring. In case of malfunctions, the PUC switches the voltage supply for the GPS
antenna and the GPS module off. All messages are subsequently visualised.
7.6.3 Function tests and fault analysis GPS
Table 7.11 describes the possible causes and required measures relative to the corre-
sponding messages, see Table 7.10 on page 160.
Recommendation
To check the proper operation of the GPS module, the interfacing of a replacement GPS
antenna is recommended. Not all damage is detectable by mere visual inspection, for
example damage to the GPS protector or to the GPS antenna. For this reason, you
should take the measures described in Table 7.11 on page 162 before replacing compo-
nents.
Damage from electrostatic discharge (ESD)
Electrostatic discharges (ESD) can damage the hardware component(s).
Perform the process steps described here at an ESD workstation.
If no ESD workstation is available, you must wear and ESD wristband for the proc-
ess steps described here which is connected with an uncoated metallic surface.
Risk of damage
Installed components may be damaged. All the HF connections within the network ele-
ment may only be established/disconnected when the network element is disconnected
from the mains.
Ensure that the voltage supply of the component to be replaced is switched off
before you perform any work on the component.