Model 5328A
Operation
6.
LEVEL control
a,
@.
Used in conjunction with ATTEN switch to select voltage at which
triggering occurs. With
XI
attenuator, level
isvariableover~2.5volts.
In X2,
f
5volts; in X20,
?50 volts.
7.
SLOPE switch
a,
0.
Selects triggering on either positive or negative slope of input signal.
8. See7.
9.
OUTPUT MARKER A
a.
Inverted channel
A
schmitt trigger output indicateswhen channel
A has triggered; 0 to -100 mV level into 50R with less than 20 ns delay.
10. ATTEN switch
a,
a.
Selects attenuation of input signal. Signal amplitude
is
reduced by 2 in
X2 and by 20 in X20. When input amplifier control switch@is in COM A, channel B
attenuation is still determined by channel B attenuation switch.
11. OUTPUT MARKER T.I.
A-B
@.
Output
is
high during the time interval measured by the
counter. 0 to -50 mV level into 50R with less than 20 ns delay.
a
AL
12.
Coupiing switch
w,
w.
5eieci3
dc
or
dc
coupiing for input signal. When iiiput amplifier
control switch@is in COM A, channel B coupling
is
determined by the setting of the
channel A coupling switch.
13. Channel inputs
@,
a.
lnput channels A and B.
14. Trigger lights
0,
@.
Lights blinks when its channel
is
triggering. Light
is
OFF when input
signal
is
below the trigger level. Light
is
ON when input signal
is
above trigger level.
15. See 6.
16. See 14.
17. Delay switch
0.
Delay mode is activated by inner concentric knob on channel A LEVEL
control. Red LED oindicates, when lighted, that delay
is
active. To activate, turn knob
clockwise out of detent position. The delay disables the input from triggering for periods of
time from 20
ps
to 20 ms. The amount of delay
is
measured by placing the FUNCTION
switch @to T.I. A--B and the input amplifier control switch @to CHK.
18. Delay mode LED
0.
LED
is
ON when delay
is
active.
19. lnput amplifier control switch
@.
a.
CHK. With FUNCTION switch in FREQ A, counter should display 100 MHz
+I
count.
Checks operation of phase-locked 100 MHz oscillator, SAMPLE RATE@,
RESOLUTION, N
a,
and RESET
.
b.
COM A. The signal at A is also applied to channel B for single source time interval
measurement. The B input isdisconnected from the input circuitry. Channel B coupling
(but not attenuation) is determined by the channel A setting.
c.
SEP. Allows independent operation of channels A and B.
20. See 10.
21. See 12.
22. lnput Impedance switch
@.
Selects input impedance of 5OR for both channelsA and B. For
input amplifier control switch @in COM A, impedance
is
500 or 500 kR.
23. See 13.
Figure 3-10. Model 5328A Option 040, Front Panel Operation Summary (Continued)
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