EM-2115 4.0 SERVICE, MAINTENANCE, CALIBRATION
(EM2115S4-24)
DETECTOR ...................................................PEAK
BANDWIDTH ...............................................9/10 kHz
ATTENUATION ...........................................0 dB
FREQUENCY RANGE .................................0.009-0.035 MHz.
FREQUENCY DISPLAY ..............................0.022 MHz
f.
Using a Digital Voltmeter, measure the voltage on A2A16A2U2-10. The voltme-
ter should in7.50 VDC ±0.01 VDC. If not, adjust A2A16A2-R85.
g.
Monitoring the voltage on the Stator Board Bracket High Voltage test point
(A2A16A1-TP-3), set the Main Tuning Control FULL CCW. The voltmeter
should indicate 0.00 VDC ±0.05 VDC. If not, adjust A2A16A2-R55.
h.
Set the Main Tuning Control FULL CW, the voltmeter should in98 VDC
±1.0 VDC. If not, adjust A2A16A2-R56.
i.
Repeat Steps g and h until no further adjustments are required.
4.4.9 Sweep Board A11 Adjustment/Verification
Equipment required: Digital Voltmeter
Oscilloscope
36 pin double-sided extension board (ECB-30).
a.
Place the Sweep Board (A11) onto the 36 pin double-sided extension board.
b.
Set the front panel controls as follows:
DETECTOR ...................................................PEAK
BANDWIDTH ...............................................9/10 kHz
ATTENUATION ...........................................0 dB
FREQUENCY RANGE .................................0.009-0.035 MHz.
FREQUENCY DISPLAY ..............................0.022 MHz
SCAN MODE ................................................MANUAL
SWEEP RATE CONTROL ...........................MAX (FULL CW)
c.
Using a Digital Voltmeter, measure the voltage on A11-61/62. The voltmeter
should indicate 0.0 VDC.
d.
Set the Scan Mode to Single, the voltmeter should still indicate 0.0 VDC.
e.
Push the Start Switch, the voltmeter should indicate a Sweep Voltage going from
approximately 0.0 VDC to -4.5 VDC ±0.1 VDC. If not, adjust A11-R96.
f.
Repeat Step e until the Sweep Voltage stops/resets at -4.5 VDC ±0.1 VDC.
Содержание EM-2115
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