Throughout these sections, warnings identify potentially dangerous procedures. Instructions contained therein must
be observed.
5.1
Operating the universal counter
Check the line voltage and fuse ratings before connecting to the power outlet. Be sure to turn on U/C power switch
located on the rear panel. For stabilizing the counter, warm-up time of 20 minutes is required, before commencing
measurements.
5.1.1 Specification
Input frequency measurement
Measuring range
Channel A and B
5 Hz to 100 MHz LSD display depending on Gate Time and Input Signal
At least 7 Digits displayed per second of Gate Time
Channel C
100 MHz to 1.3 GHz
Input Voltage
Channel A and B
70 mV RMS Sinewave or 100 mVp
Channel C
35 mV RMS Sinewave or 70 mVp
Maximum Input Voltage
Channel A, B + C
3 V
Input Impdance
Channel A, B
1 M
Ω
Channel C
50
Ω
Attenuator
Channel A only
1 or 1/10 (-20 dB)
Time Base
Channel A, B and C
Switch selectable
Resolution
Channel A, B and C
100 MHz or more
10 Hz/0.1 s, 1 Hz/1 s, 0.1 Hz/10 s
100 MHz or less
6 digit/0.1 s
7
digit/1
s
8
digit/10
s
Period Measurements
Channel A and B
Range
0.1 Sec to 10 Sec
LSD Display
1 µSec to 0.1 Psec
Depending on Gate Time and Input signal at least 7 digits displayed per second of Gate
time.
Channel C
Range
0.1 sec to 10 sec.
LSD display
Least display limited by Display method 0.1 Psec.
Totalize
Totalize A or B
Manual Range
0 to 9, 99, 999
Manual
reset
possible
Ratio A/B measurements
Range
5 Hz to 100 MHz both channels
LSD display
2.5 x period
x Ratio
Gate
Time
Difference A-B
Range
5 Hz to 100 MHz both channels
LSD display
100 Hz to 100 µHz depending on Gate Time, Input signal and display method
Addition A + B
Range
5 Hz to 100 MHz both channels
LSD Display
100 Hz to 10 nHz depending on Gate Time and Input Signal
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