46
PERFORMANCE TESTS
Introduction
The following tests check the performance of the FS700 and verify that
the hardware functions properly. The results of each test may be
recorded on the test sheet at the end of this section. Calibration of the
FS700 should only be attempted if the relevant performance test fails.
Necessary Equipment
The following equipment is necessary to complete the tests. The
suggested equipment or its equivalent may be used.
1) 100 MHz Oscilloscope
2) Synthesized sweepable function generator, 50 ohm output, 1 mV
minimum amplitude, such as Hewlett-Packard 3325B.
3) Precision Frequency Counter with at least 1 x 10
-9
resolution, such
as SRS SR620.
4) Precision voltmeter with AC bandwidth of at least 100 kHz, such as
Fluke 8840A.
5) 10 MHz frequency source known to be more accurate than 1
x 10
-8
.
6) Antenna Input Termination Adapter. Schematic is shown in
TROUBLESHOOTING section Figure 1.
Tests
Start Tests
For the duration of these tests, make sure the FS700 is not trying to
lock to a station. Go to the TRACKING menu and set the SEARCH
MODE to MANUAL. If either the LOCK or SEARCH LEDs are on,
stop the search/lock. Unless otherwise specified, it is assumed that
jumpers JP104 - 107 are in their normal operational position, i.e. JP104
in, JP105-107 out.
Front Panel Test
This test verifies the functionality of the front panel display, LEDs, and
keys.
1) Turn on the FS700 while holding down the "TIME" key. The turn-on
message should appear and stay on the display. The lock LED
should turn on.
