HP 8444A - Front Panel

Operation
dy LINE — ON/OFF. Controls primary power to Track-
Model 8444 A
FRONT PANEL
RATOR S13 00 Mite:
ing Generator. Light glows when switch is energized.
Type AIH bulb. For access to bulb, switch to OFF
and pull button straight out.
[2 MANUAL SCAN. Provides manual tuning of Spec-
trum Analyzer. Controls voltage levei at SCAN OUT-
PUT (8) below. Scan trace on CRT determined by
position of MANUAL SCAN control. For MANUAL
SCAN operation, connect cable between Tracking
Generator SCAN OUTPUT and Spectrum Analyzer
SCAN IN/OUT. Set Spectrum Analyzer SCAN MODE
switch to EXT. Vary MANUAL SCAN control to
tune analyzer through selected SCAN WIDTH.
© TRACK ADJ. Adjusts frequency of 1.55 GHz oseilla-
tor in Tracking Generator so that the RF OUTPUT
(5) tracks the frequency—tuning of the Spectrum
Analyzer. Control adjusted for maximum amplitude
indication of trace on CRT display. Ten turn control
provides adjustment of frequency over a range of
approximately MHz.
@ LEVEL. Adjusts Tracking Generator RF OUTPUT
3-2
(5) level over range of O to —10 dBm. Level calibrated
for O dBm at 30 MHz with accuracy of +0.5 dB. Set
LEVEL control to 0 dBm for calibrated CRT display
on Spectrum Analyzer.
RF OUTPUT. Type N Connector — Tracking Genera-
tor RF output connector. Frequency adjusted to
track tuning of Spectrum Analyzer by TRACK ADJ
(3). Output level adjusted by LEVEL (4).
O THIRD LO INPUT. Type BNC connector — Input
for Spectrum Analyzer third LO (500 MHz). Norm-
ally used with 8554B RF Section. Parallel with rear
panel THIRD LO INPUT which is normally used with
8555A RF Section.
FIRST LO INPUT. Type BNC connector — Input for
Spectrum Analyzer first LO (2.05 — 3.3 GHz with
8554L RF Section) — (2.05 — 4.1 GHz with 8555A
RF Section).
O SCAN OUTPUT. Type BNC connector. Manual tune
voltage to Spectrum Analyzer (0 to 10 Vdc). Voltage
level controlled by position of MANUAL SCAN (2).
Figure 3-1. Model 8444A Tracking Generator Front Panel Controls, Indicators and Connectors