C A L I B R A T I O N OF SWEEP GENERATOR SUBASSEMBLIES
M X - 8 3 6 4 ( P ) / U S M - 3 0 8 ( V ) AND MX-8364A(P)/USM-308(V)
(HP MODELS 8690A AND 8690B)
Equipment required for calibration performance checks and adjustments is listed in table 3-1.
Calibration equipment
Item
Minimun use specification
Autotransformer . . . . . . . . . . . . . 105 to 125 vac, 3% . . . . . . . . . . . . . . . Variable Power Transformer TF-
1-1
510/U (General Radio model W10-
MT3A).
Calibrator . . . . . . . . . . . . . . . . . . . . UUT plug-in unit . . . . . . . . . . . . . . . . . . . Electrical Teat Equipment Plug-In
1-2
Unit PL-1239/USM-308(V) (Hew-
lett-Packard model K04-8690A)
Hewlett-Packard model 11531A.
Multlmeter . . . . . . . . . . . . . . . . . 0 to 300 vdc 0.1% . . . . . . . . . . . . . . . .
Multimeter ME-333/U (J-Omega model
1-3
217A).
Oscilloscope AN/USM-273 (Tektronix
1-4
Oacillascope . . . . . . . . . . . . . . . . . . . 0.5v/cmto6 v/cm 3% . . . . . . . . . . . .
model 463),
voltmeter . . . . . . . . . . . . . . . . . . 0 to 6 mvac 1% . . . . . . . . . .. . . . . . . . .
Electronic .Voltmeter AN/USM-265
1-5
(Hewlett-Packard model 400EL-02).
1-6
Adapter . . . . . . . . . . . . . . . . . . . Tee, BNC plug to 2 BCN jacks. . . . . .
Connector Adapter UG-274B/U (Amp-
henol model UG-274B/U).
Connector Adapter UG1887/U (Po-
1-7
Adapter . . . . . . . . . . . . . . . . . . . . . BNC jack to double banana plug . . . . .
mona Electronics model 1289).
1-8
Cable assembly (8 required) . . 36-inch RG58C/U, BNC plug to BNC
Pomona Electronics model BNC-C-36.
plug.
1-9
Adapter . . . . . . . . . . . . . . . . . . . . . . Binding poet to BNC plug . . . . . . . . . . . Connector Adapter UG-1888/ (Po-
mona Electronic model 1296).
1-10 Test lead . . . . . . . . . . . . . . . . . .. 24 inch, single banana to single banana . Pomona Electronics model B-24 black.
WARNING
e. Adjust autotransformer output voltage con-
Voltages in excess of 1000 volts are pre-
trol for a meter indication of 115 vat.
sent in UUT and may result in personnel
f. Set UUT LINE switch to RF and allow a
injury or lose of life.
15-minute warmup.
g. Position UUT controls as follows:
(1) START/CW, MARKER 1 START/CW,
a, Install calibrator (1-2) and calibrator scale
MARKER 2 STOP, and STOP/ F controls to 8
into UUT.
v on calibrator scale.
b. Energise equipment and allow sufficient time
(2) SWEEP SELECTOR switch to CW.
for equipment to warmup and stabilise.
(9) All AMPLITUDE MOD pushbuttons re-
c. Adjust autotransformer (1-1) output volt-
leased.
age control to minimum.
(4) ALC pushbutton released.
d. Connect UUT power cord to autotransform-
(5) MANUAL SWEEP control fully coun-
er.
terclockwise.
15
