Anritsu MP8931A - NRZ Interface Output Level; Performance Test

6.4 Performance Test
6-3
6.4 Performance Test
6.4.1 NRZ interface output level
(1) Testing specifications
Item Specifications Remarks
Level (TTL)
High: +2.5
±
0.3 V
Low: 0
±
0.3 V
Common for
Data/Clock
Level (ECL)
High:
−
0.9
±
0.2 V
Low:
−
1.7
±
0.2 V
Common for
Data/Clock
Clock
±
10 ppm
(2) Setup
NRZ Output
Data
Clock
TTL/ECL
Oscilloscope or
frequency counter
MP8931A
75 Ω/50 Ω converter
or ECL termination
Fig. 6.4.1-1 Setup for NRZ interface output level test
(3) Test procedure
1. Set up the equipment as shown in Fig. 6.4.1-1.
2. Open the main menu screen by pressing [Menu], and select
System*
→
Initialize to perform initialization.
3. On the main menu screen, select NRZ Output*
→
Level to set
the NRZ output level to TTL or ECL.
4. On the main menu screen, select NRZ Output*
→
FREQ to set
the NRZ output frequency.
5. Check that the obtained level or frequency meets the specifica-
tions.