34
Chapter 2
Getting Started
Rear Panel Features
3b
EXT TRIG IN (TTL)
accepts the positive
edge of an external voltage input that
triggers the spectrum analyzer internal
sweep source.
3c
HI SWP OUT (TTL)
indicates when the
spectrum analyzer is sweeping.
4
(Shown) HP-IB and parallel (Option A4H) are
optional interfaces. HP-IB supports remote instrument
operation and direct printing of screen data. The
parallel port is for printing only.
(Not Shown) RS-232 and parallel (Option 1AX)
are optional interfaces. RS-232 supports remote
instrument operation and direct printing of screen
data. The parallel port is for printing only.
NOTE
Only one optional interface can be installed at a time. Option 1AX or
Option A4H must be installed in slot 1 on the rear panel. Option A4H is
shown installed in slot 1 in Figure 6.
5
Spectrum Analyzer Inputs/Outputs (Option A4J):
SWP OUT
provides a voltage ramp corresponding to the
sweep of the spectrum analyzer (0 V to 10 V).
HI SWP OUT (TTL)
indicates when the spectrum analyzer
is sweeping.
HI SWP IN (TTL)
can be grounded to stop sweeping.
AUX VIDEO OUT
provides detected video output (before
the analog-to-digital conversion) proportional to
vertical deflection of the trace. Output is from 0 V to 1
V. Amplitude-correction factors are not applied to this
signal. The output signal will be blanked occasionally
during retrace by the automatic alignment routine.
Select a very long sweep time to minimize this, or turn
off the
Auto Align All
function (and use
Align Now All
manually to maintain calibration.) Refer to the
Alignments
key description in Chapter 4 for more
information on alignment key functions.
AUX IF OUT
is a 50
Ω
, 21.4 MHz IF output that is the
down- converted signal of the RF input of the spectrum
analyzer. Amplitude-correction factors are not applied
to this signal. This output is taken after the resolution
bandwidth filters and step gains and before the log
amplifier. The output signal will be blanked
occasionally during retrace by the automatic alignment
routine. Select a very long sweep time to minimize this,
or turn off the
Auto Align All
function (and use
Align Now
Summary of Contents for ESA-L1500A
Page 12: ...11 1 Preparing for Use and Printing ...
Page 28: ...27 2 Getting Started ...
Page 47: ...46 Chapter2 Getting Started Analyzer Battery Information ...
Page 48: ...47 3 Troubleshooting ...
Page 54: ...Chapter 3 53 Troubleshooting How to Return Your Analyzer for Service Figure 3 1 ...
Page 117: ...116 Chapter4 Front Panel Key Reference Trig ...
Page 118: ...117 5 Menu Maps ...
Page 119: ...118 Chapter5 Menu Maps ...
Page 120: ...Chapter 5 119 Menu Maps ...
Page 121: ...120 Chapter5 Menu Maps ...
Page 122: ...Chapter 5 121 Menu Maps ...
Page 124: ...Chapter 5 123 Menu Maps ...
Page 125: ...124 Chapter5 Menu Maps ...
Page 128: ...Chapter 5 127 Menu Maps ...
Page 129: ...128 Chapter5 Menu Maps ...
Page 130: ...Chapter 5 129 Menu Maps ...
Page 131: ...130 Chapter5 Menu Maps ...
Page 135: ...134 Chapter5 Menu Maps ...
Page 136: ...135 6 Options and Accessories ...
Page 145: ...144 Chapter6 Options and Accessories Accessories ...
Page 146: ...145 7 Specifications ...
Page 179: ...178 Chapter7 Specifications Regulatory Information ...
Page 180: ...179 8 Required Equipment ...
Page 187: ...186 Chapter8 Required Equipment Test Equipment ...
Page 308: ...307 10 Performance Verification Test Record ...