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[SHIFT] [M4] (HP-IB:
SHM4) initiates a possible 18 diagnostic tests. These tests are labeled 14 to 31.
Other tests are initiated at "power on". These tests are labeled 0 to 13. The results of all of these tests
are indicated in the ENTRY DISPLAY, as either a global PASS or FAIL. Each of the test results may be
viewed by entering the test number via the [STEP] keys, [NUMERICAL] keys, or [KNOB]. The tests
may also be performed over the HP-IB and results read by using the OD command (see the HP-IB
PROGRAMMING SECTION of this Operating Information manual).
[SHIFT] [M5] (HP-IB:
SHM5) turns off all diagnostic routines except the [SHIFT] [FREE RUN]display
test.
[MKR SWEEP] (HP-IB:
MP1 activates the function, MPO turns off the function) causes the HP
8340B/41B to start sweeping at the frequency of marker [Ml], and stop sweeping at the frequency of
marker [M2] ([M2] must have a higher frequency than [Ml]). If [MKR SWEEP] is activated when [M2]
is at a lower frequency than [Ml], the values of [M1]/[M2] will be permanently interchanged. Press
[MKR SWEEP] again to exit from Marker Sweep and return to the previous sweep limits. The LED
above the key indicates whether the function is on (lighted), or off (not lighted).
[SHIFT] [MKR SWEEP] (HP-IB:
SHMP) causes the sweep limits to permanently change to the fre¬
quencies of [Ml] and [M2], Repeated pressing of [MKR SWEEP] alone causes the HP 8340B/41B to
toggle between [M1]/[M2] sweeps and the previous sweep frequencies: [SHIFT] [MKR SWEEP]
eradicates the previous sweep values, leaving only the [M1]/[M2] frequencies.
[OFF] (HP-IB:
MO) turns off (deactivates) any single marker. Press any marker key [M1]...[M5], then
press [OFF] to deactivate that marker. If [OFF] is pressed without first pressing a marker key, the
most recently active marker will be turned off. The frequency value of the deactivated marker is
retained in memory, and will be recalled when that marker key is pressed once again. A deactivated
marker will not affect the [MKR SWEEP], [MKR A], or [MKR — OF] functions.
[SHIFT] [OFF] (HP-IB:
SHMO) turns off (deactivates) all markers, [Ml] through [M5]. However, the
frequency values of all markers are retained in memory, and will be recalled when the marker keys are
pressed once again. Deactivating the markers will not affect the [MKR SWEEP], [MKR A], or [MKR ->
OF] functions.
[MKR A] (HP-IB:
MD1 turns on the function, MDO turns off the function) causes the frequency
difference between any two markers to appear in the ENTRY DISPLAY. Press any two marker keys
[M1]...[M5], then press [MKRA] and the ENTRY DISPLAY will show the frequency difference. Press
any other marker keys [M1]...[M5], and the ENTRY DISPLAY will change to show the frequency
difference between the two most recently passed markers. On a CRT display, the trace between the
two selected markers is intensified (intensity markers only, not [AMTD MKR]). The LED above
[MKRA] shows when the function is on (lighted), or off (not lighted).
[SHIFT] [MKRA]:
has no effect on the HP 8340B/41B.
[MKR —► CF] (HP-IB:
MC) sets the center frequency of the sweep to the frequency of the active
marker. Press any marker key [M1J...[M5], then press [MKR — CF] to change the center frequency of
the sweep to that of the marker. The frequency span [AF] will not change unless the new sweep limits
fall outside the frequency range of the HP 8340B/41B; in that case, the HP 8340B/41B will automati¬
cally scale down the AF to be within the frequency range.
[SHIFT] [MKR
CF] has no effect on the HP 8340B/41B.
Figure 3-9.
Frequency Marker Keys (2 of 2)
HP 8340B/41B
Operating Information
3-:
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