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A EN 16/37
1KHW001493-EN
Now contacts at terminal, telephony, 6b-7a should be open and contacts 6a-6b should be
closed. Check it.
4. Check PAX-BLOCKING relay. In normal operation contacts at terminal, telephony, 6b-7a
should be closed and contacts 6a-6b should be open.
Switch off the remote equipment, after the programmed delay time the link alarm occurs.
Now contacts at terminal, telephony, 6b-7a should be open and contacts 6a-6b should be
closed.
B.10.6 Pax 4-wire, remote is Pax 4-wire
The following tests must only be done, if the operation mode ‘Pax 4-wire’ is configured at the local
equipment and the operation mode ‘Pax 4-wire’ is selected at the remote equipment.
1. Toggling the M-WIRE at remote equipment, E-WIRE output should toggle simultaneously
at local equipment. Note, E-WIRE is a switching contact without inherent voltage source
and without polarity.
2. Activate M-WIRE at both equipments. If M-WIRE is configured as ‘inverted’, contacts at
terminal, telephony, 4a-4b must be opened, otherwise closed.
3. Feed a 800 Hz tone, with the configured level from remote side into remote equipment.
Take a measurement of the output level at the local equipment. It should be in 1 dB range
of the configured output level from the local equipment.
4. Check PAX-BLOCKING relay. In normal operation contacts at terminal, telephony, 6b-7a
should be closed and contacts 6a-6b should be open.
Switch off the remote equipment, after the programmed delay time the link alarm occurs.
Now contacts at terminal, telephony, 6b-7a should be open and contacts 6a-6b should be
closed.
B.10.7 Pax 4-wire, remote is ‘Remote subscriber’
The following tests must only be done, if the operation mode ‘Pax 4-wire’ is configured at the local
equipment and the operation mode ‘Remote subscriber’ is selected at the remote equipment.
1. Toggling the hook contact of remote equipment, E-WIRE output should toggle
simultaneously at local equipment. Switching of hook contact can simulated by closing
the subscriber contacts at terminal, telephony, 0a-0b. Note, E-WIRE is a switching
contact without inherent voltage source and without polarity.
2. Check the Output level of speech:
Instead of subscriber, use coupling bridge similar to that, shown in Figure 2. The resistor
R should be chosen to 500 Ω, included the resistance of the two coils. If the coupling
bridge has polarity. Check first polarity at terminal, telephony, 0a-0b.
3. Activate M-WIRE at local equipments. If M-WIRE is configured as ‘inverted’, contacts at
terminal, telephony, 4a-4b must be opened, otherwise closed.
4. Feed a 800 Hz tone, with the configured level from remote side into remote equipment.
Take a measurement of the output level at the local equipment. It should be in 1 dB range
of the configured output level from the local equipment.
5. Check PAX-BLOCKING relay. In normal operation contacts at terminal, telephony, 6b-7a
should be closed and contacts 6a-6b should be open.
Switch off the remote equipment, after the programmed delay time the link alarm occurs.
Now contacts at terminal, telephony, 6b-7a should be open and contacts 6a-6b should be
closed.
B.10.8 Pax 4/2-wire
The following tests must only be done, if the operation mode ‘Pax 4/2wire’ is configured at both
ends of the link.
1. Toggling the M-WIRE at remote equipment, E-WIRE output should toggle simultaneously
at local equipment. Note, E-WIRE is a switching contact without inherent voltage source
and without polarity.
2. Activate M-WIRE at both equipments. If M-WIRE is configured as ‘inverted’, contacts at
terminal, telephony, 4a-4b must be opened, otherwise closed.
Note: It is assumed, that LOCAL/TRANSIT is deactivated.
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