ETS-Lindgren HI-1710 Microwave Measurement System (Archived) - Manual (Page 50)

HI n 1710 Manual Page — 45
HI-1710 display. Leave the Voltage Adjustment Plug
in place on the HI-1710 for step 7.
7. Adjust the Voltage Adjustment potentiometer for a
1.000 reading on the HI-1710. Connect the DC
voltmeter to the Analog Output receptacle.
Depending on the RANGE setting of the instrument,
the voltmeter should indicate readings of 0.40,
0.80, 2.00, or 4.00 volts (±5 percent).
8. Further repairs or adjustment to the HI-1710 or to
the Probe/Preamp assembly must be accomplished
by Holaday Industries, Inc. or an Authorized Repair
Facility.
Note: Improperly adjusting the HI-1710 readout
instrument or tampering with the calibration
adjustments of the Probe/Preamp will void the
calibration of the HI-1710 Measurement System
and may result in erroneous RF leakage readings.
Chip Revisions
Operating parameters and self-test limits along with the
operating features of the HI-1710 Microwave Survey
System are stored in the EPROM Memory IC's (U7 and
U8). These, along with the Battery-backed RAM (U11),
comprise the storage function of the instrument. It is
possible that revised chips may be made available to
upgrade the features or functions of the HI-1710. In this
case, refer to figure 7 for proper location, orientation, and
installation of the replacement chips.
Note: The Battery-backed RAM (U11) is a 24 pin IC
installed in a 28 pin socket. This chip must be located to
the right or back of the socket for proper installation.
When properly located, the index mark is oriented in the
Archived 4/2/10