HP 8642A Operation And Calibration Manual page 228

Operation
Model 8642A/B
Operating Messages (cont'd)
SP4 PREVENTS AM .E84 4084
AM is not possible when Special Function 4 (ALC Off) is selected. Select Disable ALC Off (Special
Function 204) before setting AM.
HP-IB: Send SP204 before AM.
SP4 PREVENTS PULSE
.E85
4085
Pulse modulation is not possible when Special Function 4 (ALC Off) is selected. Select Disable ALe Off
(Special Function 204) before selecting pulse modulation.
HP-IE: Send SP204 before PL.
INVALID SPCL FUNCTION .E86 4086
An invalid special function number was selected. Select a special function number that exists. (Refer to
Special Functions, page 3 -171.)
SOME SPCLS STAYED ON .E87 4087
Some special functions remained selected after you selected Special Function 0 or 100 because certain
special functions were coupled to other instrument settings. (This message will only occur if more than
one special function remains on. Special Function 0 or 100 not turning off just one special function will
display a message describing the reason that one speCIal function was not turned off.) View the special
functions to see which are still on by selecting SPCL ( ( SHIFT
J
0 )
(HP-IB: Use SP and read the
display; refer to the Output Display information discussion that begins on page 3-21). The special
functions might remain selected because of a sequence dependency problem. Possibly refer to the
Sequence Dependency discussion that begins on page 3-12 in the HP-IB portion of this Section III.
0.9 HZ LIMIT REACHED
.E88
4088
A maximum RF frequency change of 0.9 Hz can be accumulated using Special Function 240 (Decrement
Frequency 0.1 Hz) or Special Function 241 (Increment Frequency 0.1 Hz). To get another 0.1 Hz step,
directly set the RF frequency to 1 Hz resolution.
SA VE/RECALL MAX
=
50 .E92
4092
The maximum recall register number is 50. Select register numbers only between 00 and 50 .
RECALL NOT DEFINED
. E93
4093
No instrument settings are saved in this register. The register could have been cleared with Special
Function 251 (Clear Recall Registers) or because of a hardware error. This error E93 occurs
simultaneously with hardware error HI O. Refer to "Recalling an Undefined Register" on page 3-162 for
more information.
SEQ NOT SET...4 DIGITS .E94 4094
Sequence was not set, 4 digits are required. Try the sequence setting again using two digits for both the
start and stop sequence register numbers.
ADRS VALID 0-30 ONLY
.E95
4095
HP-lB addresses are valid only between 0 and 30. Select an HP-IB address between 00 and 3D, or select
31 for Listen Only capability.
MASK VALID ONLY 0-255
.E96
4096
The RQS mask is valid only between decimal 0 and 255. Set the RQS mask between those values.
3-192