HP 8901B Operation And Calibration Manual

Performance Tests
Performance Test 10a
Model 890lB
30KHZ (CELLULAR RADIO) ALTERNATE CHANNEL FILTER - OPTION 035
Description
Option 035 Performance Verification
This test is to be performed on Option030 instnune nts containing Option 035 as one ofthe alternate
channel filters. Inthis test anHP8662A(or level ~~ccu~acg equivaleat altemative) is usedto simulate
both an in-chanml and adjacent channel signal. The signal generator is first tuned in-channel 60
that the reference can be set for the adjacent channel power measurement. The signal generator is
thentunedto the adjacent channel and the LO shjftedto measure the signal generator. The output
level of the
signal generator is varied to exercise Mmnt combinations of IF gain
Equipment
Signal Generator.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8662A
Procedure
Initial Setup
1. Set the signal generator to 150MHz CW at 0 dBm. Connect the signal generator output to the
Measuring Receiver's RF' Input. Allow all equipment 30 minute warmup minimum.
Filter Test of Option 030 Combination Which Includes Option 035
2. On the Measuring Receiver, key in the following:
a. 41.0SP (Performs instrument PRESET)
b. 150
MHz (Manually tunes the LO)
c. 24.0SP (Initializes Option 030)
d. 24.1SP (Selects Option 035 filter, displays IF reference level value)
e.
30 kHz UP (Increments LO up one channel spacing)
f. 24.2SP (Displays Option 035 filter ratio level value)
3. Offset the signal generator Up one channel spacing by incrementing fi.equency 30 Wz (150.030
4. Change signal generator power level to -75 dBm. Read the ratio displayed on the Measuring
MHz). The Measuring Receiver should display approximately 0 dB.
Receiver. If the display is slightly unstable due to noise, then average the readings.
LEVEL RATIO -75dB (f1.5dB)
5. Change signal generator power level to -65 dBm. Read the ratio displayed on Measuring
Receiver.
LEVEL RATIO -65dB (fl.5dB)
6. Change signal generator power level to -45 dBm. Read the ratio displayed on Measuring
Receiver.
LEVEL RATIO -45dB (f1.5dB)
7. Change signal generator power level to -25 dBm. Read the ratio displayed on Measuring
Receiver.
LEVEL RATIO -25dB (k1.5d.B)
8. Change signal generator power level to -10 dBm. Read the ratio displayed on Measuring
Receiver.
LEVEL RATIO -1OdB (k1.5dB)
4-38 Performance Test 10a
reu. 01 OCT92

HP 8901B Specifications

General

Brand	HP
Model	8901B
Category	Measuring Instruments
Language	English