Tektronix 549 Instruction Manual page 6

Characteristics— Type 549
Characteristic
or Feature
Deflection Factor
1 x 0.2 V/cm maximum. (VARIABLE 1­
10 control fully clockwise)
1 0 x 2 V/cm maximum.
VARIABLE
variable attenuation of the input
signal of at least
FRO N T PANEL O U TP U T SIG NALS
Output is 1.5 volts per centimeter
VERT SIG O U T
± 20
the CRT. Frequency response is DC
to 700 kHz (at the — 3 dB point).
This is equivalent to a risetime of
1 µ s or faster.
150 volts ± 1 0 volts increasing to
SW EEP A
approximately 180 V ± 1 0 volts at
the faster sweep speeds and having
the same time duration as the A
sweep.
ance equal to or greater than
ktl.
W ithin the range of 20 to 40 volts.
+ G A TE A
Positive going pulse with the base­
line at zero volts. Time coincident
with the A sweep.
load resistance equal to or greater
than 5 kO.
W ithin the range of 20 to 40 volts.
+ G A TE B
Positive going
zero volts, time coincident with the
B sweep.
D LY'D TRIG A positive going pulse 7 V ± 2 V
into a load equal to or greater
than 10 kΩ..
end of the delay period.
EX TERN A L SIG NAL CONNECTORS
Z Axis Modulation
CRT GRID An applied 20 volt peak-to-peak
signal from DC to 1 M H z w ill blank
or unblank the CRT. A 5 volt peak-
to-peak signal w ill produce notice­
able modulation. Negative portion
of signal blanks CRT beam.
CRT C ATHO DE An applied 20 volt peak-to-peak
signal from 20 kH z to 1 M H z w ill
blank or unblank the CRT.
volt peak-to-peak signal w ill pro­
duce noticeable modulation.
tive portion of the signal blanks
CRT beam.
1-2
Requirement
1-10 control provides
10 1
: .
% of displayed deflection on
Recommended load resist­
100
Recommended
pulse, baseline at
Pulse occurs at the
A 5
Posi­
Remote Control Connector
Remote Erase -
Upper Screen Ground pin A.
Ground pin B.
Lower Screen
Remote Erase and
Ground pin E.
Reset
Remote Single Sweep
Reset Ground pin F.
Ground pin C.
Remote Save
Remote Store -
Upper Screen Ground pin H.
Ground pin J.
Lower Screen
A and B SW EEP G ENERATO R
TRIG G ERIN G FEA TURES
Internal (from trigger pickoff cir­
Source
cuit in the vertical amplifier or from
the plug-in unit), external and line.
Coupling Direct (DC), capacitive (AC) or low-
frequency rejection (AC LF REJ).
Slope Trigger on positive going or nega­
tive going portion of trigger signal.
Automatic or Trig , adjustable stabil­
Mode
ity at an adjustable level and free
running sweep.
Triggering Performance1
A Time Base
Coupling
Source
NORM Minimum 0.2 cm of deflection, DC
DC
(internal) to 10 M Hz, increasing to 2.0 cm at
30 M Hz.
Same amplitude as DC. 300 H z to
AC
30 M Hz,
AC LF REJ Same amplitude as DC. 200 kH z to
30 M Hz.
PLUG -IN Triggering
(internal) unit performance.
EXT DC Minimum 0.3 volt signal, DC to 10
M H z increasing to 3 volts at 30
M Hz.
AC Same amplitude as DC, 300 H z to
30 M Hz.
AC LF REJ Same amplitude as DC, 200 kH z to
30 M Hz.
1 U p p er a n d lo w e r fre q u e n c y trig g e rin g re q u ire m e n ts fo r Tim e B ase
A a re sh o w n in F ig . 1 -2 .
Condition
dependent on plug-in