Tektronix 1L30 Instruction Manual page 10

Operating Instructions-—Type 1L30
POS— Controls the ver­
tical position of the dis­
play.
CAL — Adjustment to
calibrate the midrange
position of the IF CEN­
TER FREQ.
Fine— 1 turn control for
fine adjustment of the
IF center frequency.
DISP CAL— Adjustment
-i to match the oscillo­
scope sweep amplitude
to the analyzer disper­
sion.
DISP BAL— Adjusted to
balance the dispersion
center of the MHz/CM
and the kHz/CM posi­
tions of the DISPERSION
RANGE switch.
DISPERSION RANGE—
Selects the MHz or kHz
range of the DISPER­
SION control.
DISPERSION — Selects
the frequency width or
display window.
COUPLED RESO LU­
TION— Selects the reso­
lution bandwidth of the
analyzer. Pull the knob
and turn to uncouple
from the DISPERSION.
VIDEO FILTER— Restricts
the video bandwidth to
reduce high frequency
response and filter out
noise.
GAIN— Varies the ver­
tical gain of the Spec­
trum Analyzer.
TO RECORDER— Jack
provides an output for
recorders, etc.
IF ATTEN dB— Series of
calibrated attenuation
steps.
VERTICAL DISPLAY— Se­
VIDEO INPUT — BNC
lects
connector to apply video
LOGarithmic,
input signals to be dis­
SQuare LAW
played as a convention­
or VIDEO.
al (time domain) dis­
play.
Fig. 2-3. Function of front panel controls and connectors.
RF CENTER FREQ— Con­
trol tunes the local os­
cillator
Dial indicates the cen­
ter frequency of the dis­
FINE RF FREQ — Fine
tuning adjustment of the play when the IF CEN­
TER FREQ controls are
local oscillator to set
phase lock operation. centered.
SWEEP INPUT —
connector for applying
the sawtooth waveform
(100 V or 150 V) from
the
scope.
d is p la y mode.
LI Near,
(power)
and the dial.
LOCK CHECK— Push the
button to check and set
phase lock operation.
REF FREQ Selector— Se­
lects the source (I NT
or EXT) for phase lock
operation.
Phase Lock Connector—
Used to apply an exter­
nal reference frequency
to the phase lock cir­
cuits or to provide an
outlet for the internal
1 MHz reference fre­
quency markers which
may be used to eoli
brate the dispersion.
MIXER PEAKING — Op­
timizes the conversion
action of the mixer.
RF INPUT— Input sig
nals < — 30 dBm rec­
ommended, ± 1 5 dBm
maximum.
BNC
associate oscillo­