ETS-Lindgren HI-1710 Microwave Measurement System (Archived) - Manual (Page 48)

HI n 1710 Manual Page — 43
Checks and Adjustments
The following checks and adjustments may be made by
a qualified technician who has access to the necessary
calibrated voltage measuring equipment. The error codes
displayed by the HI-1710 can be used to determine
specific problem areas.
Note: The HI-1710 Microwave Survey System should be
in the 4 digit mode for all tests and adjustments
described in this section.
1. If any voltage level is out of specification (refer to
section 4.0 Shift functions, Power Supply for
limits), check the power supply with the power off
for shorts (resistance to ground less than 5 ohms)
with a suitable multimeter. A short indicates a failed
component in the power supply circuit or a
mechanical problem.
2. Insert the probe/preamp into the front panel socket
of the HI-1710. Apply power to the instrument.
Verify that the following voltages are within
allowable limits using a calibrated DC voltmeter.
Measure all voltages between the test point
specified and chassis ground (refer to Figure 7 at
the end of this section).
+5 volts Test point C: level must be within
±5% of 5 volts (4.75 - 5.25).
+8 volts Test point D: 7.60 - 8.40 volts.
The +5 and +8 voltage levels are not adjustable.
Archived 4/2/10