Model 8640B TM 9-4935-601-14-7&P
PERFORMANCE TESTS
4-11. FREQUENCY RANGE TEST
SPECIFICATION:
Range: 500 kHz to 512 MHz in 10 octave bands.
Bands and Band Overlap: Bands extend 10% below and 7% above the nominal limits shown below.
Nominal
Frequency External
Bands 0.5-1 1-2 2-4 4-8 8-16 16-32 32-64 64- 128- 256- Doubler Band
(MHz) 128 256 512 512-1024
Frequency 0.45 0.9 1.8 3.6 7.2 14.4 28.8 57.5 115 230 230 to 550
Range (MHz) to to to to to to to to to to (without Ex-
(with overlap) 1.07 2.1 4.2 8.5 17.1 34.3 68.7 137.5 275 550 ternal Doubler)
DESCRIPTION:
The frequency range is verified by using a frequency counter to measure the frequency at the high and low end of each
band.
EQUIPMENT:
Frequency Counter.....................................................................................HP 5327C
PROCEDURE:
1. Connect generator's auxiliary RF output jack (located on rear panel) to frequency counter's 50 ohm input after
setting Signal Generator's controls as follows:
COUNTER MODE: EXPAND...................................................................................Off
LOCK........................................................................................Off
Source ..................................................................................... INT
AM............................................................................................................................................................OFF
FM............................................................................................................................................................OFF
RANGE ...................................................................................................................................... 256-512 MHz
FREQUENCY TUNE ................................................................................................................. Full clockwise
FINE TUNE .......................................................................................................................................Centered
RF ON/OFF................................................................................................................................................ON
2. Set FREQUENCY TUNE full clockwise. The frequency counter should read 550 MHz or greater.
550.0 MHz _______________________
4-2
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