Philips PM 3210 Operating Manual page 8

TIME AXIS
Time coefficients
Measuring accuracy
Magnifier
Time-base output
TRIGGERING
Trigger system
Trigger source
Trigger slope
Trigger coupling
Trigger sensitivity and bandwidth
0 Hz—10 Hz
0.5 cm! 0.5 V
Input impedance of the external
trigger input
Maximum input voltage
Level range (measured with 10 kHz signal
and continuous attenuator in position
CAL)
C.R.T.
Type
Use ful screen area
Graticule
Total acceleration voltage
10 Hz—10 kHz
21 calibrated ranges from 100 ns/cm to 0.5 s/em in 1-2—5 sequence.
A vernier provides uncalibrated, continuous contro! between the ranges.
+3%
5x (50 cm). Any 10 cm of the expanded sweep can be displayed. The
maximum effective time coefficient is 20 ns/cm. The measuring accuracy
with expanded sweep is + 5 %o (measured between 10 %o and 90 % of the
time-base sweep).
5 V, sawtooth voltage. The output is protected against short-circuits.
Output resistance: 2 kQ
Load: With an RJgad 2 5 kQ and a Cjgad < 100 pF, the deviation of the
time coefficient is less than 10 %o
the time-base generator operates in the triggered mode when an input signal
is applied. An auto-circuit can be switched in to provide a time-base line in
the absence of an input signal.
channel A, channel B or external source
+ or—
in position LEVEL in position AUTO
DC : O Hz... 25 MHz DC :10 Hz... 25 MHz
HF: 10 kHz... 25 MHz HF : 10 kHz... 25 MHz
LF :10 Hz... 10 kHz LF :10 Hz... 10 kHz
10 kHz-5 MHz 5 MHz—15 MHz 15 MHz—25 MHz
1MQ//40 pF
500 V (d.c. + a.c. peak)
— internal level : more than 16 cm
~— internalauto : approximately 3 cm
— external level : more than 10 Vp-p
— external auto : approximately 1.5 Vp-p
D14—120GH with medium-short persistence phosphor *)
8cmx 10cm
external, with cm-divisions
10kV
*) Instruments fitted with a GM-tube with long persistence phosphor are available under type number PM 3210G.