Specifications

SECTION 3
INCOMING ACCEPTANCE
3.1 IN TRO DUC TION
The fol low ing pro ce dure should be used to ver ify that the Model 3380 fil ter is op er at ing within spec i fi ca tions. These checks
may be used for in com ing ac cep tance and pe ri odic per for mance checks. Tests must be made with all cov ers in place and op er -
at ing for a min i mum of 30 min utes to reach op er at ing tem per a ture. If the unit is not op e r at ing within spec i fi ca tions, re fer to
Cal i bra tion Sec tion of the Main te nance Man ual be fore at tempt ing any de tailed main te nance. Be fore test ing, fol low the ini tial
set-up and op er at ing pro ce dure in Sec tion 2.
3.2 TEST EQUIP MENT RE QUIRED
The test equip ment be low is re quired to per form the fol low ing tests:
a. Low Dis tor tion RC Os cil la tor: Krohn-Hite Model 4400A or equiv a lent.
b.
RC Os cil la tor: 10Hz to 10MHz, fre quency re sponse of ±0.025dB from 10Hz to 500kHz. Krohn-Hite Model 4300B or
equiv a lent.
c.
AC Volt me ter: ca pa ble of mea sur ing 100µV to 10Vrms, 10MHz band width, Fluke Model 8920A or equiv a lent.
d. Fre quency Coun ter.
e. Dis tor tion An a lyzer: Krohn-Hite Model 6900B or equiv a lent.
If the [ALL CHAN] key is not lit, press the [ALL CHAN] key to
turn on ALL CHAN NEL mode. Per form each test on chan nel 1,
then re peat it on chan nel 2.
3.3 CUT OFF FRE QUENCY AC CU RACY
Place BNC tees on the os cil la tor’s out put and the fil ter’s `+’ in put and set the fil ter’s in put to `+ only’ (press [SHIFT] [∆ in put
gain].
Model 3380 Section 3 - Incoming Acceptance
3-1