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Outline of NHX system
FUNCTION DIAGRAM
Zoom lights
NHR-3A-4 (up to 4)
Lights on when
any call has
been placed.
NHX-50M
Tone & LED
Duty station
NHR-SP
NHX-80X: Central Control Unit not shown
Capacity
Communication
Basic operations
Bedside sub station
Call-in priority
Accessories
Volume adjustments
Resetting system
Line-off Trouble indication
Bathroom call sub
Common area
restrooms
Corridor lamp
Patient rooms
Routine call,
Urgent bathroom call or
Cord-out trouble call
Corridor lamp
Staff call area
Urgent staff call
NHR-3TS
Single-master system with 50 station master and 30-station expander, for maximum
capacity of 80 stations.
1. Communication is hands free at the room station, and push-to-talk or voice-actuated
handset at the master station.
2. Three types of call-in signals : routine, urgent call, or cord-out trouble call,
identified differently by tone and LED light.
3. Press TONE-OFF button at master to mute incoming call tone if necessary.
4. To begin communication, simply lift handset or press TALK button.
5. To initiate a call, press selector button. Corridor lamp and zone light do not light when a
call is initated from the master station.
Reply by intercom for routine calls only, or press CANCEL button on the bedside sub
station. To respond to an urgent or cord-out trouble call, press TONE-OFF button at
master and go directly to calling location. Reset the call at the calling station.
Bedside sub station hears a pretone when channel is selected, then the voice of the
person calling from the master station.
1. Master station automatically connects to the highest priority call first when multiple calls
have been placed.
2. Call-in signals during communication light the LED on the master and have an audible
tone.
3. Up to 5 incoming calls are displayed at the master at a time. Additional calls will be held
in queue and will be displayed and answered in order of priority.
1. Zone light will light when any call is placed (if stations are wired for zone lamp feature).
2. NHR-3TS Cmmon area Call Station places an urgent bathroom call or urgent staff call in
an area where there is not a bedside sub station.
3. Duty Station annunciates the call-in signal the same as at the master station.
Adjust receive and call tone volumes as needed (on side of master). Preset volume
controls are on the bottom of the NHX-50M.
System resets itself when NHX-80X power switch is turned off and back on again.
Line-off Trouble at the NHX-50M sounds when wires to the sub stations or duty station are
shorted or broken.
NHR-3TS
NHR-7A (up to 3)
Bedside sub (Up to 6)
NHR-4A
Bedside sub (single station)
NHR-4A
NHR-8A
NHR-7A
with pullcord
– 3 –
pullcord
NHR-7A
(up to 3)
NH-1SA/A or
NH-2SA/A
NHR-8A
pullcord
NH-1SA/A,
NH-1SA,
NHR-7A
NH-2SA/A,
with pullcord
or NH-2SA
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