artisan 8640B - Output Level Flatness Test; Output Level Flatness Test Setup

Model 8640B TM 9-4935-601-14-7&P
PERFORMANCE TESTS
4-25. OUTPUT LEVEL FLATNESS TEST
SPECIFICATION;
Level Flatness: <+0.5 dB flatness from 0.5 to 512 MHz referred to output at 50 MHz. (Flatness applies to +13 to -7 dBm
and for top 10 dB of vernier range.)
DESCRIPTION:
A power meter is used to measure output level flatness across each band.
Figure 4-12. Output Level Flatness Test Setup.
EQUIPMENT:
Power Meter...........................................................................................HP 432A
Thermistor Mount................................................................... HP 478A OPT H63
10 dB Attenuator.....................................................................HP 8491A OPT 10
NOTE
The mount's VSWR should be 1.1:1 max. The attenuator's VSWR should be 1.06:1 max with
flatness ± 0.05 dB from 0.5 to 512 MHz.
PROCEDURE:
1. Connect equipment as shown in Figure 4-12 after setting Signal Generator's controls as follows:
Meter Function..........................................................................................LEVEL
COUNTER MODE: EXPAND ..........................................................................Off
LOCK...............................................................................Off
Source............................................................................ INT
AM ...............................................................................................................OFF
FM ................................................................................................................OFF
RANGE........................................................................................... 32 - 64 MHz
FREQUENCY TUNE................................................................................50 MHz
OUTPUT LEVEL..................................................... . +13 dBm (Vernier max cw)
RF ON/OFF ...................................................................................................ON
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