HP 8642A Operation And Calibration Manual

Model 8642A/B
Operation
Operating Messages (cont'd)
SP6 PREVENTS INT+EXT.FM .E7
4007
Special Function 6 (FM 2re-Emphasis On) prevents the selection of a summed internal and external FM
source. Select Special Function 206 (FM Pre-Emphasis Off) to select INT+ (EXT AC), INT+ (EXT DC), or
Special Function 112 (Internal + External Low Rate FM). Refer to Modulation, FM (page 3-113) for
more information.
HP-IB: Select SP2(J6 before selecting.FM source codes FMBA, FMBD, Or SPII2 .
TURN.OFF.svvr FIRST .. SPI23
. E8 40tHl
Turn off the frequency sweep before attempting those settings because Special Function 123 (Phase
Continuous Frequency Sweep) is the type of frequency sweep currently selected. (Refer to RF Frequency
Sweep, page 3-49, for more information.) Turn off either I START EREQ I or [ 810P FREOJ and then
try your setting again.
HP-IB: Turn off the frequency sweep with FAOF or FEOF, then retry settings
SP9+AM LIMIT MAX AMPTD .E9
4009
Special Function 9 (Attenuator Range Hold) selected with the current AM setting limits amplitude levels
a
ttainable according to Table 3 -15 (refer to Amplitude, page 3 -75). Turn off Attenua tor Range Hold
(with Special Function 209) and/or reduce AM to a depth that will allow the amphtude setting, or refer
to Sequence Dependency which begins on page 3-12 in the HP- IB portion of this Section III.
FUNCTION OFF. NO STEP
.EI0 4010
The active function is off so its value cannot be stepped. Turn on or set the active fUIlction to a valid
setting before using the Step keys.
FUNC DISALLOWS OFF JON .Ell
,1011
The active function cannot be turned off or on. You attempted to turn off or turn on either [FRB:O,
[lV10D FREQ I, or sweep TIME ( CSBIfD (3TART FREQ I ) (HP-IB codes FR, MF, or ST). Refer to
Modulation Oscillator, page 3-131 for a way to effectively turn off the internal modulation oscillator.
ONL Y OFF JON IS ACTIVE .E12
Only the ( OFF ON I key can be selected. Select an active function other than PULSE ( (sR1FD
EMF ( ( SRIFT ) CTf\[CR SET I ), or KNOB HOLD (C$R!ET) G) before entering data.
HP-IE: Don't send data immediately after selecting PL, EM, or KH.
NO ACTIVE FUNCTION .E13
Currently no function is active. Select an active function and then try your setting again.
NOTHING TO BACKSPACE
.E14
There i, no da ta in the display to backspace. Select an active function before using ( BACK SP J .
NO CURSOR TO MOVE . E15
4012
CAtlin),
4013
4014
4015
Currently no function is active so no cursor can be moved. Select an active function to activate the Knob
before attempting to move cursors .
INV ALID SHIFT FUNC
. E16 4016
The key you have selected cannot be preceded by the CS"RfEIJ key. Select a valid shift function.
HP-IB: Select the proper function code without SH. SH should only be used with the Display Output
capablhty or to get back the normal display of lllstiument settings (HP-IB code: SHSH). Refer to Output
Display information that begins on page 3-21 in the HP-IB portion of this Section III
INV ALIn TERMINATOR .E17
4017
This message is never displayed locally
HP-IB: Invalid terminator received Selld con eel termillator code for function you are trYll1g to set
3-185

HP 8642A Specifications

General

Brand	HP
Model	8642A
Category	Inverter
Language	English