User's Manual

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JMA-9100 Instruction Manual > A.NQE-3141 Interswitch Unit > A.3 REFERENCE
A.3 REFERENCE
A.3.1 Preheat Time after Change of Connection Pattern
After the current interswitch connection pattern has been changed, operation
needs to wait until the system is ready. This is because the preheat time varies
depending on the previous connection of the scanner unit and display unit.
The wait time is necessary for protecting the electronic tubes that emit radio
waves.
A.3.2 Notes on Changing Connection Pattern
An attempt to change to another connection pattern immediately after the
completion of connection pattern change may fail.
This is because internal processing still needs some preparation time upon
completion of connection pattern change. Let several seconds pass between
connection pattern change operations.
A.3.3 Notes on Connecting Slave Display Unit
Before a slave display unit can be placed in transmission state, the master display
unit must be placed in transmission state. If the master display unit is moved from
the transmission state to the transmission standby state, the slave display unit is
forcibly placed in transmission standby state. When they are in transmission
standby state, is shown in the alarm indication (lower right of the
display), and the alarm sounds.
A slave display unit cannot control tune. Tune is controlled by the master display
unit. is shown in the transmitter pulse length (upper left of the display).
Range change for a slave display unit is limited by the range and pulse length /
repetition frequency of the master display unit. As a rule, a greater range than the
range of the master display unit cannot be set for a slave display unit. However, if
the transmitter pulse length of a slave display unit is identical to the master
display unit's and the repetition frequency is within the master display unit's, a
greater range than the master display unit's can be selected for the slave display
unit. When the master display unit narrows the range or changes the transmitter
a) When not changed to a new connection pattern Preheating not
required
b) When changed to a new connection pattern and an
scanner unit had been used before the change
Preheating not
required
c) When changed to a new connection pattern and an
scanner unit had not been used before the change
Preheating
required
TXRX Standby
Slave