artisan 8640B - FM Linearity Adjustment (Alternate) Test Setup

Model 8640B TM 9-4935-601-14-7&P
ADJUSTMENTS
5-44. FM LINEARITY ADJUSTMENT (Alternate) (Cont'd)
Figure 5-13. FM Linearity Adjustment (Alternate) Test Setup
EQUIPMENT:
FM Discriminator................................................................................................ HP 5210A
Filter Kit (for Discriminator) ............................................................................. .HP 10531A
Audio Spectrum Analyzer................................................................ .HP 141T/8552B/8556A
PROCEDURE:
1. Connect equipment as shown in Figure 5-13 after setting Signal Generator's controls as follows:
Meter Function............................................................................................................ . FM
COUNTER MODE: EXPAND ........................................................................................ Off
LOCK............................................................................................. Off
Source........................................................................................ INT
AM............................................................................................................................. OFF
MODULATION FREQUENCY....................................................................... 1 kHz (Fixed)
FM .............................................................................................................................. INT
PEAK DEVIATION................................................................................................... 5 kHz
PEAK DEVIATION Vernier................................................................................... .Fully cw
RANGE............................................................................................................. 0.5-1 MHz
FREQUENCY TUNE............................................................................................. . 0.7MHz
OUTPUT LEVEL................................................................................................. +13 dBm
RF ON/OFF ................................................................................................................ ON
NOTE
If it is desired to optimize FM linearity at a frequency other than mid-band, proceed as follows:
a. Set RANGE and FREQUENCY TUNE to the desired frequency.
b. Set RANGE to 0.5-1 MHz.
5-40
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