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Rear panel switch and connectors
230 V
115 V
21
Input connector for channel
C. Frequency
range is 5 to 512 MHz, sensi-
tivity 10 mMV,.,.. Input impedance is 50 Q; AGC
circuit provides automatic
attenuation. Maximum
input voltage is 12 Vrms.
Light:emitting diode turns on when input level is sufficient for correct trig-
gering.
Input connector for channel A. Frequency range is 0 to 160 MHz when DC
coupled, 30 Hz to 160 MHz when AC coupled. Impedance can be set to 1 MQ
shunted by 25 pF or to 50 Q.
Dynamic range is +3 V compared to set trigger level times attenuator set-
ting. Trigger level is available at front panel miniature jacks and BNC con-
nectors at rear panel. Maximum
input voltage is 230 V,»; or 230 V dic. at
1 MQ, and 12 V_.. at 50 .
Same as 20. Input A but accepts also gating signal for channel A in totalize
mode.
Light-emitting diode turns on during 100 ms when triggering level is passed.
Provides set triggering voltage from channel A.
Light-emitting
diode turns
on when
mains
cable is connected
to mains.
Indicates
that oven-enclosed
oscillator
circuits
are
connected
to supply
voltage.
Light-emitting diode indicates when main gate is open (on) and closed (off).
Light-emitting diode turns on when
counter is programmed
externally via
remote control unit, e.g. option PM 9685.
Unit annunciator indicates measuring
unit. "No go" is indicated at impos-
sible combinations of control settings.
Figure VIlI-2
Mains voltage selector.
Mains input.
Sub-unit connector.
Fits connector of rear panel PM 9664 in 19" cabinet
PM 9716 A.
Output signal depends on operating mode set with FUNCTION switch:
COUNT A: Scaled signal. Scaling factor set with MULTIPLIER switch.
PERIOD A
or
T.l.
ATO B: Output signal 100 MHz to 0.01 Hz.
CHECK:
100 MHz signal gated by set TIME BASE (DISPLAY TIME control
pulled).
Amplitude
is 500 mV,,
in 50 Q; source
impedance
approx.
100 Q, DC
coupled.
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