Anritsu MT8801C - Performance Tests; Reference Oscillator Frequency Stability

6-5
6.3 Performance Tests
6.3 Performance Tests
Make sure to have the equipment to be tested and the measuring instruments have
warmed up and completely stabilized for at least 30 minutes before starting the test
unless otherwise specified. To perform the most accurate measurement, it is also
necessary to test under the room temperature, obtain minimum fluctuation of AC sup-
ply voltage, and have no problem such as noise, vibration, dust and humidity.
6.3.1 Reference oscillator frequency stability
This test tests the frequency stability of the 10 MHz crystal oscillator used as the
reference oscillator. Measure the frequency changes after 24-hour operation at 25°C
(aging rate) and at 0 and 50°C (temperature characteristics).
(1) Specifications
Reference oscillator
• Frequency: 10 MHz
• Aging rate: ≤ 2 × 10
–8
/day (After 24-hour operation, 25°C ± 5°C)
• Temperature stability: ± 5 × 10
–8
(0°C to 50°C, reference at 25°C)
(2) Test instruments
• Frequency counter: MF1603A
• Frequency standard: with stability of ≤ ± 1 × 10
–9
(3) Setup
Frequency standard
Frequency counter
MF1603A
OUTPUT
10MHz
STD REF INPUT
INPUT
10MHz Reference
Buffered Out
MT8801C
ParallelSerial
GPIB
10MHz
Buffered
Output
10MHz/13MHz
Reference
Input
~Line Input 350VA Max
47.5–63Hz
100–120V T 6.3A
200–240V T 6.3A
O I
WARNING
CAUTION
Detector
Output
Data Clock
Ext Trig
Input
Ext Trig
Output
Ext FM
Input
Demod
Output
BER Input
CDMA
Reference
Input
CDMA
Reference
Output
25 contacts 24 contacts
CDMA Timing
25 contacts
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