Anritsu MP1777A Spezifikationen PDF herunterladen (Seite 64)

DIGITAL LINK MEASURING INSTRUMENTS

192 For product ordering information, see pages 4 –10

E&M signalling

receiver

Digital receiver

Filters

Jitter detection (PCM interface only)

Psophometric filter: Conforms to ITU-T Rec. O.41

3 kHz flat filter: 300 Hz to 3.4 kHz

Band pass filter: 200, 300, 420, 500, 600, 820, 1020, 2400, 2800, 3000, 3400, 3600 Hz selectable

Notch filter: 820, 1020 Hz selectable

Filter for S/N meter: Conforms to ITU-T Rec. O.131

Alarm display Signal loss, AIS, frame loss, multiframe loss is indicated with the red LED display.

Coder offset detection Measurement range: –128 to +128

Peak code detection Measurement range: –128 to +128

Remote end alarm detection Remote end frame alarm, remote end multiframe alarm

World pattern monitor Telephone channel, frame word, non-frame word, multiframe word

Error detection

Detectable error: Code, frame, word, bit

Measurement item: Error ratio, errored second, % error-free second, error count

Acceptable bit error measurement pattern (64 kbit/s): 2

–1 ( ITU-T Rec. O.152)

Acceptable bit error measurement pattern (2.048 Mbit/s): 2

–1 (ITU-T Rec. O.151)

Time base: 1 to 9999 s

Signalling bit monitor Possible to display on selected signalling channel in a, b, c, d bit

Signalling distortion meter (possi-

ble to measure selected signalling

channel in any bit: a, b, c, d)

Acceptable pulse speed: 10, 20 pps

Mark ratio range: 0 to 100%

PCN input interface

Conforms to ITU-T

Rec. G.703, G.704 (2.048 MHz)

Input impedance: 120 Ω balanced, 75 Ω unbalanced selectable

Number of telephone channels: 30, 31 channels selectable

Signalling: Channel associated signalling, common channel signalling selectable

Coding: HDB3, AMI selectable

Synchronization: Regenerated frame and multiframe from incoming PCM signals

Connector: 3-pole CF (120 Ω bal.), BNC (75 Ω, unbal.)

TTL input interface

Number of telephone channels: 32 channels at 2.048 Mbit/s, single channel at 64 bit/s

Synchronization: External 8 kHz frame signal

Connector: D-sub 25-pole (rear panel)

Measurement parameters

Pulse speed: 10, 20 pps selectable

Mark ratio: 10 to 90%, 1% steps

Interface

DC sink current: 100 mA maximum (make)

Output impedance: >22 kΩ (brake)

Switch voltage: 53 V maximum

Connector: 3-pole CF (rear panel)

Measuring range

Pulse speed: 10 to 20 pps

Mark ratio: 0 to 100%

Interface

Input impedance: 3.3 kΩ internally pulldown to –48 V

Connector: 3-pole CF (rear panel)

E&M test signal

generator

Continued on next page

Frequency mode: Conforms to ITU-T Rec. O.171

Amplitude of modulated jitter:

Range: 1 UI, 10 UI selectable

Amplitude and frequencies: Conforms to ITU-T Rec. O.171

Amplitude of measured jitter:

10 UI

0.5 UI

2 Hz

Frequency

2.4 kHz 100 kHz45 kHz

Amplitude of modulated jitter

10 UI

0.5 UI

20 Hz

Frequency

2.4 kHz 100 kHz45 kHz

Amplitude of modulated jitter

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