Table of Contents
Advertisement
4.1.8
Input C Sensitivity Test
4.1.8.1
This section applies only to 2251As fitted with Option 41 (Input C)
4.1.8.1.1
Set the 2251A to its home state. Select Frequency C as the measurement mode and
external frequency standard.
(Command String: IP FC B1)
If Option 11 is installed connect the 2251A internal reference output to the external
signal source 10 MHz Input. Configure the external signal source to accept the
10MHz reference from the 2251A.
(Command String: IP FC)
4.1.8.1.2
Connect the Signal Generator to the counter as shown in Figure 4-5.
4.1.8.1.3
Set the 2251A measurement resolution to the values given in Table 4-5 and apply the
frequencies given in Table 4-5 to the counters input C. Verify that the 2251A gives
a stable reading within the tolerances given at less than the signal levels given.
Frequency
40 MHz
100 MHz
500 MHz
1.0 GHz
1.3 GHz
Table 4-5, Input C Sensitivity Performance Limits
4.1.8.2
Disconnect the test equipment.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Figure 4-5, Input C Test Configuration
Signal level
Resolution
10 mV rms
8
10 mV rms
9
10 mV rms
9
10 mV rms
9
50 mV rms
9
Tolerance
± 1 Hz
± 1 Hz
± 1 Hz
± 2 Hz
± 2 Hz
4-7
Advertisement
Table of Contents
