Specifications

8
Features and Controls
Shift Change/Emergency Call
The ZPM3 provides either a shift change tone or Emer-
gency call (with alert tone) in all zones or in a zone group
containing up three user-selected zones. (The default
configuration sounds the tone in all zones. See section on
Field Programming to program the zone group.) This
feature overrides the standard paging features of the
ZPM3. The type of tone is user-selected and may consist
of a one-second burst or two dual-tone bursts. (See Field
Programming on page 11 to select the desired tone.)
See Figure 11 to wire the ZPM3 for the shift change
feature. See Figure 12 to wire the Emergency Call Fea-
ture. Note the use of a TPU paging amplifier MIC input.
The microphone used in this application is a desk-type
model with a push-to-talk switch. A contact closure (from a
desk microphone or push-button switch) is required to trig-
ger the Emergency Call. In the shift change application,
the contact closure from a clock energizes a relay which
disconnects any current page and activates the shift
change feature.
Night Bells
The night bell feature is triggered by either the high-volt-
age ring signal or a contact closure. Figures 1 and 3
show the connections for contact closure and high-volt-
age ring signal night bells. Use either the night ring con-
tact from the PBX or actual night line ring signal to
activate the night ringer (using both is not recom-
mended). The default configuration rings the night bell in
all zones; however, a zone group with up to three zones
can be field programmed – see section on Field Pro-
gramming to program the zone group.
All-Call Inhibit
Access to the standard All-Call function may be inhibited if
desired. This feature does not affect the Emergency Call
function. See section on Field Programming to inhibit
access to All-Call.
Privacy Beep
The privacy beep option introduces a 150ms tone every
15 seconds into the talk path of a two-way zone. Mute
contacts MT1 and MT2 close for the duration of the tone.
See section on Field Programming to enable/disable the
privacy beep option.
Volume Control
The TONE VOL control adjusts the volume of the pre-
announce, confirmation, error, and Shift Change/Emer-
gency Call tones. The NIGHT RING VOL control adjusts
the level of the night ringer tone (if enabled). The BGM
VOL control adjusts the volume of background music,
when the music source is connected to the ZPM3, as
shown in Figure 6. All controls are screwdriver-adjustable.
Mute Contacts
A set of normally closed contacts (MT1 & MT2), that go to
a normally open state whenever the the ZPM3 is
accessing a two-way zone, are provided. This is used to
operate the talk back muting function of talk back amplifiers.
External Contact Closure
A DPDT contact set (terminals NOB, NCB, CMB) is
available for operating external equipment and for use
in ground start, shift change, and Emergency Call appli-
cations. These contacts change state when the ZPM3
goes off-hook.
24/48V Talk Battery Selection
DIP Switches 1 and 2 are set to match the type of talk
battery supply that is being used. Both switches must
be set in the identical position.
Subzone Lockout
The subzone lockout switch, DIP Switch 3, must be set to
the ''O'' position when programming features through the
telephone. When placed in the ''I'' position, no additional
programming can be done.
Confirmation Tone
DIP Switch 4 turns the confirmation tone on (I) or off (O).
Pre-Announce Tone
DIP Switch 5 turns the pre-announce tone on (I) or off (O).
Talk/Talk Back Zone Selection
DIP Switches 6 through 8 on the top bank of the ZPM3
are used to the set the mode of the individual zones. Set
the respective zone DIP Switch to ''I'' for one-way zones
and ''O'' for two-way zones.