HP 70000 series, Руководство пользователя

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PRESEL HYS
(preselector hysteresis) compensates for hysteresis in the preselector lter . Use
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PRESEL HYS
when changing the center frequency by values greater than N 2 100 MHz and when measuring
ranges with spans less than N 2 100 MHz, where N is the number of the harmonic used for
internal or external mixing. Refer to T able 4-15 for the harmonic number N that corresponds to
a specic frequency band or external-mixer range .
T o use the
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PRESEL HYS softkey , change the center frequency and press
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PRESEL HYS . Sweep
the measurement range once .
T able 4-15. Frequency Ranges and Corresponding Harmonic Numbers
Band/Range Harmonic Number
and Sign of IF (N)
Internal Mixing - HP 71210C 2.9 { 6.2 01
6.0 { 12.7 02
12.5 { 19.9 +3
19.7 { 22.0/26.5 +4
Internal Mixing - HP 71200C 2.9 { 6.2 01
6.0 { 12.8 02
12.6 { 22.0 04
External Mixing - HP 70907A K 18.0 { 26.5 +6
A 26.5 { 40.0 +8
Q 33.0 { 50.0 +10
U 40.0 { 60.0 +10
V 50.0 { 75.0 +14
E 60.0 { 90.0 +16
W 75.0 { 110.0 +18
F 90.0 { 140.0 +24
D 110.0 { 170.0 +30
G 140.0 { 220.0 +36
Y 170.0 { 260.0 +42
J 220.0 { 330.0 +50
Functional Type:
preselector
Firmkey A ccess:
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Freq
Preset State:
O
4-116 Softkey Descriptions