Oxmoor PRM-8 User Manual
PRM-8
™
PAGE ROUTING MODULE
Installation
&
Operation
Manual
TABLE OF CONTENTS
PRM-8 INTRODUCTION .................................................................................................................. 1
PRM-8 CALLOUTS .......................................................................................................................... 2
PRM-8 BLOCK DIAGRAM ................................................................................................................ 3
PRM-8 SET-UP ................................................................................................................................ 4
PRM-8 SET-UP (CONTINUED) ......................................................................................................... 5
PRM-8 CONNECTIONS ................................................................................................................... 6
PRM-8 CONNECTIONS (CONTINUED) ............................................................................................. 7
PRM-8 PROGRAMMING .................................................................................................................. 8
PRM-8 PROGRAMMING (CONTINUED)............................................................................................ 9
PRM-8 PROGRAMMING (CONTINUED)........................................................................................... 10
TYPICAL PAGING CONTROL PANEL ............................................................................................... 11
PRM-8 SET-UP NOTES ................................................................................................................... 12
PRM-8 SPECIFICATIONS ............................................................................................................... 13
OXMOOR FACTORY SERVICE ......................................................................................................... 14
OXMOOR TWO YEAR LIMITED WARRANTY ..................................................................................... 14
CONTACT OXMOOR ....................................................................................................................... 14
PRM-8 INTRODUCTION
•Multi-channel zone-page feature
• All-page capability
• Eight program channels
•Mic/line selectable page input
• Second line-level page input
• Individual channel page-level controls
• Adjustable program ducking
• Individual channel ramp-up/down adjustments
• Zone selection control by momentary or maintained closure
• PA-422 serial control capability
• Provision for real-time LED tally indicators
• Removable terminal blocks for easy wiring
The eight-channel PRM-8 Page Routing Module simplifies page routing within multiple-zone sound systems.
Page inputs are easily routed to any one, or any combination, of the module’s eight program channels.
Upon initiation of a page, program audio at each selected channel is automatically faded to a user-determined level and mixed with the page signal. Upon
completion of a page the program audio on each channel is ramped smoothly back to its original level.
Each of the two PRM-8 page inputs may function as a
Zone Page and/or an All Page input as determined by
internal dip switches. An input assigned the All Page
function takes priority over the Zone Page input.
Accessed through the control port, the Zone Page Enable control routes the zone page input to the selected
program channels. During this page, the program audio
of each selected channel is ducked as determined by the
Duck Level.
Similarly, the All Page Enable control routes the All
Page input to all program channels. During this page,
the program audio of all channels is ducked as determined by the Duck Level.
to its original level upon completion of a page. Page
Level gain controls provide independent page level settings for each program channel.
Controls on the rear of the PRM-8 include a "Mic, Line"
switch for configuring the page Mic/Line input to accept
either a microphone source or a line-level source and
screwdriver-adjustable attenuators for both page inputs.
A Control Port allows the use of contact closures, momentary or maintained (user selectable), for zone page
selection and zone page clear. Zone page enable and all
page enable always require a maintained closure. DC
power is also present for adding LED tally indicators for
all control functions.
The PRM-8 is ideally suited to solving the complex
patching requirements of paging within room combining
systems. When linked to Oxmoor’s MCS Room Combining System through PA-422 ports, the Page Module
tracks room combining changes. As a result, a page
routed to one channel within a combined group will go
to all channels in the group. Besides allowing communication between the PRM-8 and the MCS-Mainframe, the
PA-422 ports make possible the utilization of an alternative controller.
In some installations it is desirable to prevent the All
Page signal from being heard in certain zones. An All
Page Source dip switch removes the All Page source
from selected channels during an All Page function. All
channels will continue to duck and ramp the program
source during an All Page.
Screwdriver-adjustable controls on the front panel of the
compact, 1U chassis include Duck Level for setting the
level to which program audio is attenuated during a
Zone Page and All Page. Fade In adjusts the time required for the program audio to reach the duck level
upon initiation of a page. Fade Out adjustment determines the time required for the program audio to return
All PRM-8 audio inputs and outputs are electronically
balanced and accommodate either balanced or unbalanced lines. Terminal block connectors insure easy installation and solid mechanical connection for the eight
program channel inputs and outputs as well as the linelevel page input. The page Mic/Line connection is
through a standard female XLR-type connector.
The PRM-8 Page Module brings simplicity to system design, installation and operation, along with the uncompromising performance and reliability for which
Oxmoor products are well known and respected.
Page 1
PRM-8 CALLOUTS
PRM-8 PAGE ROUTING MODULE
POWER
1
LEVEL FADE IN FADE OUT
0-80 0 5 0 5
DUCK
2
3
Figure 1.0: Front Panel View
1. POWER STATUS LED - Indicator for AC Power On.
2. DUCK LEVEL - Duck level control pot, accessed through the
front panel with a small flat-blade screwdriver, adjusts the
level to which program material is attenuated during a
page. Range is from 0 (no ducking) to -80 dB.
3. FADE IN - Accessed through the front panel with a small
flat-blade screwdriver, sets the time required, during a
page, for the program material to be attenuated to the
level established by the DUCK LEVEL control.
4. FADE OUT - Accessed through the front panel with a small
flat-blade screwdriver, sets the time required for the
program material to return to its prior level upon
cessation of a page.
5. PAGE LEVEL - Accessed through the front panel with a
small flat-blade screwdriver, these attenuators adjust
page level, from 0 to -80 dB, in each zone individually.
6. PROGRAM OUTPUTS - Audio outputs, terminal block
connections with mating connector, electronically
balanced, accommodate balanced or unbalanced lines.
Recommended load impedance is 600 ohms or greater.
Maximum output level is +24 dBu.
CH1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8
-800-800-800-800-800-800-800-80
4
PAGE LEVEL
5
10. MIC/LINE LEVEL - Accessed through the back panel with a
small flat-blade screwdriver, adjusts the MIC/LINE input
for varying input signal levels.
11. LINE IN - Page input, terminal block connections with
mating connector, electronically balanced input, accepts
balanced or unbalanced signals from line-level devices.
Normal input level is +4 dBu with a maximum input level
of +24 dBu.
12. LINE LEVEL - Accessed through the back panel with a small
flat-blade screwdriver, adjusts the LINE input for varying
input signal levels.
13. CONTROL PORT - Female, 25-pin, standard D-sub connector.
Provides connections for external switching of: Zones for
zone paging, Zone Page Enable, All Page Enable, and Zone
Page Clear. Also provides tally connections for all control
functions.
14. PA-422 IN - Male, 9-pin D-sub connector. This port
connects to the PA-422 OUT of the MCS-MCP Master
Control Panel, an MCS-IB Interface Box or other PA-422
control devices.
0
PROGRAM OUTPUTS
8765432187654321
+
–
S
6
PROGRAM INPUTS
7
LINE
MIC
8
PUSH
MIC/LINE
9 10
PAGE INPUTS
LEVEL
+–
Figure 1.1: Rear Panel View
7. PROGRAM INPUTS - Audio inputs, terminal block
connections with mating connector, electronically balanced,
accept balanced or unbalanced signals from line-level
devices. Normal input level is +4 dBu with a maximum input
level of +24 dBu.
8. MIC, LINE - Switch configures the MIC/LINE input to
accept either a microphone-level or a line-level source.
9. MIC/LINE - Page input, XLR-F type, Pin 2 positive,
electronically balanced, accepts balanced or unbalanced
signals. Normal input level is dependent on the MIC,
LINE switch setting. Microphone input level is -50 dBu
with a maximum input level of -20 dBu. Line input level
is +4 dBu with a maximum input level of +24 dBu.
OXMOOR
MADE IN USA BY
OXMOOR CORPORATION
12
BIRMINGHAM, ALABAMA
CONTROL PORT
13
LINEMIC/LINE
LINE
LEVEL
S
14
PA-422 IN
PA-422 OUT
15
FUSE
16
POWER
17
CHASSIS
SERIAL #
18
11
15. PA-422 OUT - Female, 9-pin D-sub connector. It is used to
carry the PA-422 data to the next PA-422 device.
16. FUSE HOLDER - Replace only with approved type of fuse
in a rating appropriate to the mains voltage, as indicated
on back panel. (See SPECIFICATIONS).
17. POWER CONNECTOR - Standard IEC 3-pin connector for
AC power cord. Use only with grounded (3-wire) outlets.
Cord sets are available for all world connection
standards.
18. CHASSIS GROUND POST - A screw with a star washer
enables the installer to secure a ground wire to the
chassis.
Page 2
Page
Inputs
PRM-8 BLOCK DIAGRAM
Line
21
Mic/Line
Program
Inputs
3
Mic/Line Switch
Page
Level
CH. 1
Duck
Page
Level
CH. 2
Duck
Page
Level
CH. 3
Duck
Page
Level
CH. 4
CH. 5
Duck
Duck
Page
Level
Program
Outputs
Page
Level
CH. 6
Duck
Page
Level
CH. 7
Duck
Line
Mic/Line
ON ON
Zone Page
Input
SW1SW1
All Page
Input
CH. 8
12345678
SW3
All Page
Source
Page
Level
Duck
On–Board Microprocessor
ON
CH.
In
Level
Figure 1.3: Block Diagram
Page 3
Out
Toggle
SW1
••••••••••••••••••••
•••••••••••••••••••
Control
Port
Maintained
Send/Receive
ON
CH.
SW2
•••••
••••
12345678
In
PA-422Duck Fade
•••••
••••
Out
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