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DIGITAL LINK MEASURING INSTRUMENTS
190 For product ordering information, see pages 4 –10
Order-wire circuit
•
Manual measurement mode
Table 1 summarizes the manual measurements. Manual measure-
ments can be classified broadly as follows: voice channel, word test,
alarm simulation, error measurement, signalling measurement, jitter
measurement, and order wire.
Voice channel measurement
Manual measurement is used when varying the parameters more
finely than in automatic measurement or when no measurement can
be made in automatic measuring sequences, as in end-to-end mea-
surement. Manual measurement is also suited to observing changes
in results over time.
Word test
Voice channel, frame, non-frame, and multiframe words can be ma-
nipulated or monitored. Thus, spare bits included in the multiframe
and non-frame can be functionally tested and defined and by the cir-
cuit user. The drop insert function of the voice channel can also be
tested.
Alarm simulation
Frame, multiframe, or signal loss pseudo-errors can be inserted into
the signal by the MS371A/A1 to test the alarm response of the equip-
ment.
Error measurement
Per-channel (64 kbit/s) bit errors can be measured. Bit, line code, and
frame word errors at 2 Mbit/s can also be measured. The error rate,
error second, and % error-free second of these errors can then be
automatically calculated.
Jitter measurement
In the digital signal generator, jitter can be generated at 2 Mbit/s inter-
face and the digital signal analyzer can measure the jitter in a received
signal. Combined use of jitter generation and error measuring func-
tions enables measurement of jitter immunity.
Order wire
The front panel of the MS371A/A1 has a phone jack. Connection of a
handset permits use of the circuit to be measured as an order wire.
Table 1 Manual measurement summary
Measurement item
Level measurement
Tone (FLM) √√√√
Tone (SLM) √√√√
Noise
Tone (FLM)
Tone (SLM)
Digital mW (FLM)
Digital mW (SLM)
Noise
Tone
Noise
√√√√
√√√√
√√√√
√√
√√
√√√√
√√√√
√√√√
√√√√
√
√√
√√
√√
√√
√√
√√√
√
√
∗
1
√
∗
1
√
∗
2
√
∗
1
√
∗
1
√
∗
1
√
∗
1
√
∗
1
√
∗
2
√
√
√
√
√
√
∗
3
√
∗
4
√
∗
2
√
∗
2
√
∗
5
√
∗
6
√√√√
A-A A-D D-A D-D
Measurement configuration
Gain measurement
Total distortion including
quantizing distortion
Tone
Noise
Tone
Noise
Voice channel
Frame
Non frame
Multiframe
Coder offset
Peak code detection
Idle channel noise
Return loss
Spurious out-of-band signal
Longitudinal balance
Word test
AIS
Signal loss
Frame error
Multiframe error
Remote end frame error
Remote end multiframe alarm
Alarm simulation
Error rate
Number of errors
Error seconds
% error free seconds
Error measurement
E&M signalling distortion
Bit test
Signalling measurement
Jitter immunity
Jitter
Jitter measurement
∗1: When both digital interfaces of the transmitter/receiver are 2 M balanced or unbalanced
∗2: When both digital interfaces of the transmitter/receiver are 2 M balanced or unbalanced 30 channels, CAS
∗3: When the digital interfaces of the receiver is 2 M balanced or unbalanced 30 channels, CAS
∗4: When the digital interfaces of the transmitter is 2 M balanced or unbalanced 30 channels, CAS
∗5: When the digital interface of the transmitter is 2 M balanced or unbalanced
∗6: When the digital interface of the receiver is 2 M balanced or unbalanced
- DIGITAL LINK 1
- MEASURING 1
- INSTRUMENTS 1
- PULSE PATTERN GENERATOR 2
- ERROR DETECTOR 3
- Display: V 6
- CLOCK 2: V 6
- 10 GHz JITTER ANALYZER 10
- Specifications 11
- Ordering information 12
- MP1630B 13
- DIGITAL DATA ANALYZER 18
- SONET/SDH/PDH/ATM ANALYZER 22
- 52/156/622/2488/9953M (SDH) 25
- 52/156/622/2488/9953M (SONET) 26
- ±100 ppm/0.1 ppm step 27
- IPv4 setting 28
- ∗F1 = 100 Hz at RMS 30
- MU150011A 2.5G Jitter Unit 33
- ∗Typical value 33
- MP0123A ATM Unit 35
- MP1570A1 41
- PORTABLE 2.5G/10G ANALYZER 44
- Slope : 46
- DATA QUALITY ANALYZER 48
- UDP header 49
- Filtering to label 49
- MPLS tag 49
- Ethernet Module 51
- POS Module 52
- ATM QUALITY ANALYZER 54
- MU120010A T1/T3 Unit 56
- MU120011A E1/E3/E4 Unit 56
- MU120012A E1/E3 Unit 56
- MU120015A ATM25M Unit 57
- MU120016A 6.3M Unit 57
- MU120017A 6.3/25M Unit 57
- MU120020A QoS Unit 58
- MU120021A Protocol Unit 58
- MS371A/A1 60
- Functions 61
- Peak code detection 62
- Custom-made product 66
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