System Specifications

Certain troubleshooting aids of the Cisco NCS 540 enable you to perform these tasks that assist the troubleshooting process:

RJ-45 Connectors

The RJ-45 connector connects Category 3, Category 5, Category 5e, Category 6, or Category 6A foil twisted-pair or unshielded twisted-pair cable from the external network to the following module interface connectors:

  • Router chassis

    • CONSOLE port

    • MGMT ETH port


Caution

To comply with GR-1089 intrabuilding, lightning immunity requirements, you must use a foil twisted-pair (FTP) cable that is properly grounded at both ends.

The following figure shows the RJ-45 connector.

Figure 1. RJ-45 Connector

RJ-45 connector pins identified

1

Pin 1

2

Pin 2

GPS Port Pinouts

The platform is capable of receiving or sourcing GPS signals of 1 PPS & 10 MHz. These interfaces are provided by two mini-coax 50-Ohm, 1.0/2.3 DIN series connector on the front panel. Similarly there are two mini-coax 50-Ohm connectors provided in the front panel to output this 1PPS and 10MHz.

The table below summarizes the GPS port pinouts.

Table 1. GPS Port Pinouts

10 MHz (Input and Output)

1PPS (Input and Output)

Waveform

Input—Sine wave

Output—Square wave

Input—Rectangular pulse

Output—Rectangular pulse

Amplitude

Input— > 1.7 volt p-p(+8 to +10 dBm)

Output— > 2.4 volts TTL compatible

Input— > 2.4 volts TTL compatible

Output— > 2.4 volts TTL compatible

Impedance

50 ohms

50 ohms

Pulse Width

50% duty cycle

26 microseconds

Rise Time

Input—AC coupled

Output—5 nanoseconds

40 nanoseconds

Time-of-Day Port Pinouts

The following table summarizes the ToD/1-PPS port pinouts.

Table 2. RJ-45 ToD/1-PPS Port Pinouts

Pin

Signal Name

Direction

Description

1

–

–

–

2

–

–

–

3

1PPS_N

Output or Input

1PPS RS422 signal

4

GND

–

–

5

GND

–

–

6

1PPS_P

Output or Input

1PPS RS422 signal

7

TOD_N

Output or Input

Time-of-Day character

8

TOD_P

Output or Input

Time-of-Day character

BITS Interface

The following table summarizes the BITS interface RJ48 port pinouts.

Table 3. BITS Interface RJ48 Port Pinouts

Pin

Signal Name

Direction

Description

1

RX Ring

Input

Receive Ring

2

RX TIP

Input

Receive TIP (T1/E1)

3, 6, 7, 8

—

NC

—

4

TX Ring

Output

Transmit Ring

5

TX TIP

Output

Transmit TIP (T1/E1)

Management and PTP Ethernet Port Pinouts

The following table summarizes the Management and Precision Time Protocol (PTP) Ethernet port pinouts.

Table 4. Management and PTP Ethernet Port Pinouts

Pin

Signal Name

1

TRP0+

2

TRP0-

3

TRP1+

4

TRP1-

5

TRP2+

6

TRP2-

7

TRP3+

8

TRP3-

USB Flash or MEM Port Pinouts

The following table summarizes the USB flash or MEM port pinouts.

Table 5. USB Flash or MEM Port Pinouts

Pin

Signal Name

Description

A1

Vcc

+5 VDC

A2

D-

Data -

A3

D+

Data +

A4

Gnd

Ground

Alarm Port Pinouts

The following table summarizes the external alarm input pinouts.

Table 6. External Alarm Input Pinouts

Pin

Signal Name

Description

1

ALARM0_IN

Alarm input 0

2

ALARM1_IN

Alarm input 1

3

—

No connect

4

ALARM2_IN

Alarm input 2

5

ALARM3_IN

Alarm input 3

6

—

No connect

7

—

No connect

8

COMMON

Alarm common

The following table summarizes the external alarm input pinouts for Cisco N540-28Z4C-SYS.

Table 7. External Alarm Input Pinouts

Pin

Signal Name

Description

1

ALARM0_IN

Alarm input 0

2

ALARM1_IN

Alarm input 1

3

—

Alarm output closed

4

ALARM2_IN

Alarm input 2

5

ALARM3_IN

Alarm input 3

6

—

Alarm output open

7

—

Alarm output COM

8

—

Alarm input COM

Console Port Pinouts

The following table summarizes the Console port pinouts.

Table 8. Console Port Pinouts

Pin

Signal Name

Direction

Description

1

Loop1

NA

Loopback 1

2

Loop2

NA

Loopback 2

3

TxD

Output

Console RS232 Transmit

4

Gnd

NA

Ground

5

Gnd

NA

Ground

6

RxD

Input

Console RS232 receive

7

Loop2

NA

Loopback 2

8

Loop1

NA

Loopback 1