HP 8642A Operation And Calibration Manual

Operation
Model 8642A/B
Amplitude Sweep (cont'd)
3-84
START AMPTD, STOP A]l.JPTD
How
to Set Start and Stop Amplitude Values
1. Set specific start and stop amplitude values:
Start Amplitude
[ START AMP TD~ and the value of the desired sweep start end -point (in dBm, Y, m V,
or uY). If in the Ei\IF mode, the value can be set in EMF Y, EI\'lF mV, or EMF HV.
Stop Amplitude
[ STOP AMPTD] and the value of the desired sweep stop end-point (in dRm, V, mY, or
uY) If in the EMF mode, the value can be set in EMF V, EMF mV, or EMF uv.
2. You can also set last-selected start and/or stop amplitude values by selecting
mART AMPTD) [OFF ON) and (STOP AMPTQJ (OFF ON] (HP-IB codes:
AAON and ABON).
(To
shorten the display of the message "CRUNCH CRUNCH MMMMMMM .160" you
can select either a faster sweep time or Special Function 122, Linear Amplltude
Sweep, while you are setting end-point values.)
1I0w
to Stop the Sweep
I. You can stop the sweep by turning off both the start and stop end-point settings:
mART AMPTD ) ( OFF Ot£) ( SiTOP AMPTQ I ( OFF ON )
(HP- IB codes. AAOF ABOF)
When amplitude sweep is stopped, output levels are reduced to the levels described in
Table 3-14, RF.OFF Output Amplituoe Levels (on page 3-72). (We recommend you
exit amplitude sweep this way to prevent Parameter Changed messages that are
discussed on page 3 - 182.)
2. You can also stop the sweep by turmng off just one of the enci'-point settings, for
example:
L§T8.BT AMPT[fJ LQFF OID (IIP-IB code: AAOf)
When amplitude sweep is stopped, the output amplitude setting is equal to the
remaining displayed end-point value Stopping the sweep using the above example
would cause the output amplitude to to be equal to the value of the stop amplitude.
3. During aulo or single sweep you can stop the sweep and display the actual output
amplitude by selecting manual sweep.
MANUAL (( SHIFT) C37DP FREQ ) )
Selecting either [AMPID] , LA.0J, PULSE ( C@.!EIJ C1iliD ), [START FREQ J,
CST~F-]FQ], or CFF OFFlOID will also turn off the sweep but may cause a
Parameter Changed message. (These mesages are discussed in Operating Messages, page
3-182)
AlJTO, MANUAL, SINGLE
How to Select a Sweep Mode
Sweep modes available are auto, manual, and single.
(]I6BTAWTPJ or [§iOPA'1vrPfD] must first be selected bef,'re one of the
amplitude s\>.,'eep llwdes can be selected

HP 8642A Specifications

General

Brand	HP
Model	8642A
Category	Inverter
Language	English