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Operation; Introduction; Panel Features; Operator's Checks - HP 8081A Operating And Service Manual

300mhz rate generator module
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SECTION 3
J
' - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OPERATION
3-1
INTRODUCTION
3-12
Initial Control Settings
3-2
This operating section explains the function
of the controls and connectors and describes the opera-
tors checks and typical operati ng modes of the 8081 A
300 MHz Rate Generator module.
3-3
Panel Features
3-4
Front panel controls and connectors are
shown in figure 3-1. Description numbers match the
numbers on the illustration.
SOSl
A:
1 RATE range switch
300-100 MHz
2
Rate V ERN I ER
CCW
3 Mode switch
NORM
5
NEG-POS-MAN switch
MAN
Oscilloscope:
Sensitivity
100mV/div
Trigger
Channel A
Timebase
EXPANDED, 1ns/div
3-5
Operator's Checks
3-13
The repetition rate of the output should be
approximately 300 MHz.
3-6
Use the Operator's Checks (paragraph 3-91
to verify that the SOSl A is functioning correctly. The
SOSl A must be installed in an SOSOA Mainframe for
these checks. Thus it is important to remember that any
fault that is found may be in the BOSl A Rate Generator
or the 80S0A Mainframe. If the mai nframe is suspected,
carry out the SOSOA Performance Checks.
3-7
Operating Instructions
3-8
The Operating I nstructions (paragraph
3-21
I
consist of a number of procedures that explain in
detail the function of each of the 80S1 A controls. All
operating modes are described. However, 1 nternal Gate
mode can only be used if an 8084A 300 MHz Word
Generator module is avai lable.
3-9
OPERATOR'S CHECKS
3-10
The test set for the Operator's Checks is as
shown in figure 3-2. The 8081 A Rate Generator mo-
dule must be mounted in an S080A Mainframe.
3-11
Set the LI NE switch 9 on the 8080A Main-
frame to ON.
3-14
Turn the rate VERNIER 2 fully clockwise.
The repetition rate should be approximately 100 MHz.
3-15
Repeat repetition rate checks for RATE
ranges 100-10 MHz and 10-1 MHz at the CCW and CW
positions of the rate VERNIER. The repetition rates
should be approximately as shown on the RATE range
switch.
3-16
Switch off the oscilloscope. Replace the
oscilloscope sampling plug-in with real time dual channel
vertical and timebase plug-ins. Reconnect the TRIGGER
OUTPUT 8 to the channel A input and switch on the
osci Iloscope.
3-17
Repeat repetition rate checks for RATE
ranges 1 MHz -100 KHz, 100-10 KHz, 10-1 KHz,
1 KHz-l00 Hz and 100-10 Hz at the CCW and CW
positions of the rate VE RN I ER. The repetition rates
should be approximately as shown on the RATE range
switch.
3-18
Set BOB1A mode s'.'vitch 3 toTRIGand
press the MAN pushbutton 4 several times.
3-19
Output should go high when button is pres-
sed and low when button is released.

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