HP 8340b - Page 115

(A) DETECTOR CIRCUITRY
HIGH BAND DETECTOR
2.3 - 2G.5GHz (HP 8340B)
2.3 - 20.0GHz (HP 834IB)
LOW BAND DETECTOR
2.3GHz
LOG AMP
S/H
SWITCH
BUFFER
TO POWER dBm
DISPLAY, RND TO
ERROR DETECTION
CIRCUITS FOR
COMPARISON WITH
ALC INPUTS.
LOW BAND DETECTOR
BANDWIDTH CONTROL
CLOSED FOR
FREQUENCIES <400MHz
(B) PULSE WAVEFORMS, 50nsec/DIV.
50nSEC/DIV
(T) PULSE
W INPUT
®RF
•THIS PEDESTRL REPRESENTS
THE RP RMPLITUDE.
® LOG AMP OUTPUT
® S/H CONTROL
Figure 3-34. Pulse Measuring System
3-112 Operating Information
HP 8340B/41B