Troubleshooting
7. Troubleshooting
7.1 General
This section describes the self-test steps and suggested troubleshooting procedures when
AC/DC load does not function normally. If the problem cannot be solved using the information
given here, consult the distributor whom you purchased the unit.
7.2 Troubleshooting
The following table lists the operating problems and suggests corrective actions:
Poor measurement of
V, I.
Aging of components result in
deviation of characteristics.
Periodic calibration is required.
1. The input voltage is over
specification.
2. The frequency of UUT is over
1. Program the input voltage in the
reasonable range.
2. Program the frequency in the
protection (OVP)
The UUT’s output voltage peak is
over range.
1. Turn off the power supply of the
UUT.
2. Check the output voltage of UUT
lower than specification or not.
OVER CURRENT
protection (OCP)
The sink current is over
specification or I LIMIT.
OVER POWER
protection (OPP)
The input power is over
specification.
Reduce the over power or lower
down input voltage/current.
TEMPERAURE
1. Ambient temperature is too
high.
1. Operate the unit 0 ~ 40°C.
2. Unblock the airway.
2. Power cord bad contact.
Send the AC/DC load back to
Chroma to change and to check the
Out of Frequency
Rage (FREQ ERR)
The measurement frequency is
out of range.
Make sure the frequency of UUT is
in the range.
VOLTAGE protection
The output voltage of UUT is too
low.
Regulate the output voltage of UUT
higher than the specification.
The AC/DC load line input
voltage is too low or too high.
Measure input voltage, and regulate
it if it's over specification.
load by GPIB
1. The AC/DC load unit address
is incorrect.
2. GPIB cable is loose at rear.
2. Check connection, tighten the
To Next Page
Loading...
Need help?
General
