25-Seven Systems program delay manager User manual

Warnings and Service Information
CAUTION
TO PREVENT RISKS OF ELECTRIC SHOCK,
DO NOT ATTEMPT TO SERVICE THIS UNIT.
DANGER: There are hazardous voltages in this unit. Do not attempt to repair it.
WARNING:
:
To reduce the risk of electrical shock, do not expose the chassis to rain or
moisture.
There are no user-serviceable parts in the Program Delay Manager. If repairs are
necessary, contact Customer Service at 888-257-2578 (toll-free), or write to
[email protected].
USA CLASS A COMPUTING DEVICE INFORMATION TO USER. WARNING: This
equipment generates, uses, and can radiate radio-frequency energy. If it is not installed
and used as directed by this manual, it may cause interference to radio communication.
This equipment complies with the limits for a Class A computing device, as specified by
FCC Rules, Part 15, Subpart J, which are designed to provide reasonable protection
against such interference when this type of equipment is operated in a commercial en-
vironment. Operation of this equipment in a residential area may cause interference. If
it does, the user will be required to eliminate the interference at the user’s expense.
NOTE: Objectionable interference to TV or radio reception can occur if other devices
are connected to this device without the use of shielded interconnect cables. FCC rules
require the use of only shielded cables.
© 2013, 25-Seven Systems, A Telos Alliance Company. All rights reserved.
We are constantly working to improve our products. Specifications and features are
subject to change without notice.

25-Seven Program Delay Manager Version 2.3 Manual April 2013 3
Table of Contents
About this Manual 4
Program Delay Manager at a Glance 4
Basic Operation 7
Operating Modes 11
Build by Expanding, then Dump 11
Cough Mode 12
Exit Modes 13
Alternate Build Modes 15
Delay and speed selections 16
Front Panel 17
Detailed Operating Instructions 18
General menu procedures 19
PDMJs Front Panel Menus 20
Graphical User Interface / Web Remote 31
Logging in 31
The PD-Alert System 38
Serial / Parallel Remote Control 44
Installation 50
Axia / Livewire Configuration 55
Network Setup 56
Troubleshooting 61
Software Updates and Factory Access 62
Specifications 63
For more Information 63
Warranty 64
Close-ups
Some parts of this manual explain how Program Delay Manager works 9under
the hood;. We>ve set these in a san-serif face.
You don>t need to read these sections to operate or install the systemC
but they>re interesting, and understanding them will help you use the system
better.

4 25-Seven Program Delay Manager Version 2.3 Manual April 2013
About this Manual
These pages will help you get the most out of the Program Delay Manager™ (PDM).
! The first pages describe PDM’s basic concept and operation: if you’re looking
at a unit that’s already installed in a rack, they may be all you need.
! The next pages detail PDM’s operating modes, and how to choose the best
ones for your operation.
! Then there’s a detailed explanation of all the menus and controls, and instruc-
tions for setup and installation.
Program Delay Manager at a Glance
Broadcasters have been using Profanity Delay for decades. The first schemes used
analog tape loops, and delayed programming by several seconds. Operators who heard
something inappropriate switched the audio feed to real-time, stopping those last few
seconds from getting to the transmitter (and presumably, keeping listeners and the FCC
happy).
Before the next program segment, the operator would play a jingle or promo to the
transmitter, while the host talked into the tape delay. This would build up a fresh delay
for the next obscenity.
Tape delays were soon replaced by trouble-free digital ones, and many of today’s units
can slow down the input signal to build a delay without interrupting programming.
Other features may include automatic playout of filler material, a ‘cough button’ to let
hosts speak privately to a producer while delayed audio is on the air, and a smooth
ramp back to real-time when desired.
25-Seven’s Program Delay Manager combines the functions of the best delay units
with some unique and potentially vital features:
Automatic audio logging of every 3Dump6 event:
! What gets fed to the transmitter is automatically recorded on a time-stamped
audio file. There’s no question of what actually went on-air.
! What got dumped is also automatically recorded, on a time-stamped “off-air”
audio file. There can’t be any question of what actually took place in the studio
or over your phone lines.
! On-air log files provide proof of standards for regulatory authorities. You can
instantly demonstrate what people actually heard, not what they thought they
heard.

25-Seven Program Delay Manager Version 2.3 Manual April 2013 5
! Off-air audio files provide proof of fairness for listeners. If you had to dump a
guest comment, you can demonstrate exactly what was considered objection-
able.
! Off-air audio files can also be used as extended content for less restrictive en-
vironments. Create Web promos, or let Internet listeners hear highlights of
‘what couldn’t go on the air!’.
! Log files provide a valuable record for program management and personnel
development or evaluation.
! All log files include short audio segments from before and after the event, so
you can identify their context.
Automatic PD-Alerts1 and archives for management:
! Whenever an operator presses the Dump button, our patented1PD-Alert sys-
tem can automatically send e-mail text alerts—or actual audio files—to your
Program Director, Legal Department, or anyone else you designate. Or send
text to the PD’s and GM’s cell phones and audio files to the Legal Department.
No separate computer or operator intervention is necessary2.
! Any valid e-mail address can be used. Send PD-Alerts to offsite servers, or any-
where else you want.
! The PD-Alert system is controlled by password-protected access from a com-
puter on your network. Operators cannot change or bypass these Alerts from
PDM’s front panel.
! Audio files are also stored in non-volatile memory inside Program Delay Man-
ager. They can be retrieved, with password protection, from a connected
computer.
! PDM stores hundreds of megabytes worth of audio files internally. It auto-
matically purges the oldest ones, so it constantly maintains a secure record of
the most recent dump events.
And of course, the flexibility and smart design you expect from 25-Seven:
! Glitch-free time manipulation using technologies developed for 25-Seven’s
ground-breaking Audio Time Manager®.
! Stereo processing with CD quality, even during time manipulation. It’s clean
enough that you can use obscenity protection on live music programs and
other events.
1US Patent 8,352,629 “Media Stream Capture, Modification, and Forwarding”, January 8, 2013.
2You will need to give PDM a network connection and access to an e-mail system, since PD-Alert uses
Internet e-mail. But it doesn’t need a separate computer to run: all necessary functions are built into
PDM.

6 25-Seven Program Delay Manager Version 2.3 Manual April 2013
! Easy operation from the front panel, wired remote, producer’s computer, or
Axia console.
! Total flexibility: PDM can build delays without using filler material, by seam-
lessly stretching live audio. Or it can fill time with built-in audio playback of
pre-recorded jingles or other filler material, or by triggering your automation
system. Or it can use a combination of these methods. Or talent can pre-roll
live material before a segment starts, with a visual count-down showing when
the delay will be filled.
! Multiple Dump modes: Eliminate objectionable material seamlessly, jumping
to newer material in the buffer and then automatically rebuilding the delay. Or
use PDM’s OverkillDump mode, which plays back your custom “filler” ma-
terial without affecting the delay.
! PDM can exit from delayed segments instantly, or by subtly speeding up the
end of a segment until it catches up with real-time, or by playing out the de-
layed audio at normal tempo.
! You can change setup and parameters any time, as your station’s needs
change.
! Flexible front-panel LCD dashboard with controls for time readout, audio level
display, and quick parameter changes without a computer.
! Automatic synchronization of remote time displays, so talent can give accu-
rate time checks even while audio is delayed.
! Built-in delay for Program Associated Data [PAD] and other information over
IP and RS-232. Data streams are automatically synchronized to match the au-
dio delay.
! Built-in flexibility for serial data and commands. Communicate via RS-232,
RS-485, or dedicated IP Ethernet ports.
! Complete, easy to use, password-protected configuration and control from
any browser. No need to navigate through menus. Use PDM’s graphic user in-
terface from any computer on your local or wide area data network.
! Flexible audio configuration:
! XLR version includes separate stereo analog and AES/EBU inputs and outputs.
! Livewire version for flexible audio over IP installation, in an Axia environment.
! Flexible remote control:
! Use GPIO (buttons, relay closures, or TTL), secure Web interface, RS-232, IP
packets, or Axia/Livewire1.
! GPIO functions are fully assignable by the user.
1Requires Livewire version of PDM.

25-Seven Program Delay Manager Version 2.3 Manual April 2013 7
! Flexible, powerful serial language for custom, bi-directional control and status
reports. Language can be supported by many automation systems and custom
applications.
! Network cues can be automatically delayed to match program audio.
! Automatic synchronization to local or Network Time Server.
For more details on what PDM does and its special features, read the rest of this
manual.
Basic Operation
PDM’s flexibility doesn’t get in the way of easy operation1. These functions are also ex-
plained graphically, starting on page 11.
To begin a program segment/
…press the green BUILD button. It will flash while the delay is building up.
Talent should start talking immediately. Depending on how your system is set up2,
PDM will either:
! Build a delay by expanding: PDM will send the incoming audio to the trans-
mitter. But it’ll be subtly slowed down, taking more time until the delay mem-
ory is filled.
! Build a delay by playing a station jingle, ID, or other fill material from PDM’s
internal memory.
! Build a delay by Pre-rolling: PDM mutes its output while you play material
from another source, or while PDM signals your automation or cart replace-
ment system to play audio.
While the delay is building, the LCD will look like this:
!"#$%#&'(()*++%,-.(/0
0(
123'+4(5+$26,(((-.(78
8(
(
5+$26((9:;<(((((=+&"
The /(0(7(8 and symbols mean you can use front panel
buttons to change parameters or access PDM’s menus.
More about this on page 19.
The horizontal bar will fill, and 5+$26 on the bottom line of the display will count how
many seconds of audio are in PDM’s delay memory.
1These examples assume a normal installation: the console program output is routed through PDM be-
fore it goes to the transmitter or network feed; talent and producer are listening to the console’s program
output, not to the PDM’s delayed output. Other installation possibilities are covered later in this manual.
2You can change which mode gets activated easily, at any time, from the front panel LCD or remotely
from a Web browser. See page 22.

8 25-Seven Program Delay Manager Version 2.3 Manual April 2013
As soon as there’s enough audio in memory to dump programming smoothly, the
DUMP button will light.
The delay memory can hold more audio than is needed for a single Dump event. When
it reaches a limit you’ve previously set1, the BUILD button’s light stops flashing. The
DUMP button remains lit.
You can choose how long PDM takes to build a delay. Choose a setting based on how
quickly your talent talks, how subtle you want the time manipulations to be (slower
speaking styles can work with higher speed settings), and how long you’re willing to
wait for the delay memory to fill.
As a general guide:
Speed setting Minutes:seconds
to build 8-second delay
7* 2:00
10 1:30
15 1:00
*factory default
To dump an objectionable comment1
…tap the red DUMP button. PDM will eliminate the last few seconds of audio that you
heard in the control room, before it can get to the transmitter or network feed. How
many seconds get dumped depends on how PDM is set up, and on how much delay
memory it’s had a chance to store.
! The size of each Dump event is determined when the unit is set up, but can be
changed at any time—even while you’re on the air.
! When there’s enough audio in memory to smoothly Dump the full amount
you’ve preset, the DUMP button will light2. This starts a few seconds after you
begin a segment, or as you rebuild after an earlier Dump event.
! You can also press DUMP when it’s not lit: PDM won’t have enough audio
stored to Dump all the seconds you’ve designated for a dump event, but it will
dump whatever it has available.
! As long as the DUMP button is held down, incoming audio will be discarded.
After a Dump event, PDM begins to rebuild its memory with incoming audio, using
subtle time expansion so programming is never disrupted.
1You can also change this limit at any time.
2For extra safety, you can also connect one of PDM’s GPIOs (page 27) to keep your phone system off-air
until enough delay has been built for a smooth Dump, or to light a “delay unsafe” warning for producers.

25-Seven Program Delay Manager Version 2.3 Manual April 2013 9
Overkill( Mode
PDM also lets you dump incoming material by playing an internal audio file instead of
collapsing and rebuilding the delay. For example, a comedy show might want to cover
objectionable comments with a string of cartoon sound effects. The normal delay
doesn’t get depleted, and doesn’t have to be rebuilt. We call this Overkill Mode.
! The Controls Menu (page 22) selects whether PDM uses Normal or Overkill
mode when you press DUMP. You can change this setting as needed, for dif-
ferent program formats.
! That menu also lets you select which audio file you’ve loaded into PDM to play
during Overkill.
! PDM’s Dump Size and Delay Amount automatically adjust to the length of the
selected Overkill file: for example, if you want an 8-second delay, create an 8-
second file of replacement audio. After the file finishes playing, PDM’s output
switches back to delayed audio.
&
To dump a longer comment6
…tap the DUMP button again, while PDM is dumping. Each time you do, PDM will add
the preset Dump Size’s seconds to the current Dump event. (For example, if you’ve set
a Dump Size of 4 seconds, tapping twice will dump 8 seconds.)
! In Normal Dump Mode, PDM obviously can’t dump more seconds than it has
stored in its delay memory.
! In Overkill Mode, each press of the DUMP button starts playing the Overkill
file from its beginning. You can create a “stutter” effect or longer dumps by
pressing the button multiple times.
PANIC MODE
If a guest continues to generate objectionable material, even after the delay is empty:
press and hold the DUMP button. This mutes PDM’s output.
Panic mode works only when PDM is set to Normal dump mode. It isn’t needed for
Overkill mode, since the buffer doesn’t get depleted.
If talent wants to talk privately with the producer or guest6
…press and hold the blue COUGH button. While you’re holding it down, PDM will con-
tinue to send delayed audio to the transmitter. But it won’t store any new audio coming

10 25-Seven Program Delay Manager Version 2.3 Manual April 2013
in at the input. Anything talent says will be heard only in the studio and control room,
and won’t go to air. When you let go of the COUGH button, PDM starts to rebuild the
delay.
The Cough function is usually used for short comments (and of course, coughs or
sneezes) that won’t last longer than the Dump Size. But it continues to protect your sig-
nal during longer comments: If you hold down the COUGH button for more seconds
than are stored in memory, PDM will mute the output. It will also flash the COUGH but-
ton to warn you of dead air.
…press the yellow EXIT button. PDM will stop storing new audio, and will send any ex-
isting audio in its memory to the transmitter. Then it will send incoming audio directly
to the transmitter in real-time.
Depending on how your system is set up:
! PDM will play any remaining audio using time compression, subtly speeding
up what’s in memory to rejoin real-time faster; or
! PDM will play what’s in memory with no speed change1. Some operators call
this function roll out or wait and exit.
1Even if you’ve set the system to exit by speeding up, you can access this no-speed-change mode at any
time:
Multi-tasking
!"#$#%#&'()*'+&#,,'-"#'./01'2*--)$3'+&)4&56'5*78)'4#-,'7*6+#79'5,'()*:7'#;+#<-='
>*-'1.0'5?,)'7)#,')-"#&'-"8$4,'@"#$'()*'+&#,,'-"5-'2*--)$A'
5B'1.0',-5&-,'@&8-8$4'5'+58&')C'5*78)'C8?#,3')$#')C'@"5-'@5,'2&)57<5,-3'5$7')$#'D)CCE58&F'
)C'@"5-'5<-*5??('-))G'+?5<#'8$'-"#',-*78)='H)*'"5%#'8$78,+*-52?#'&#<)&7,')C'2)-"'@"5-'
-"#'?8,-#$#&,'"#5&73'
and '@"5-'-"#('787$:-'"#5&'2#<5*,#')C'-"#'7*6+='
2B'I-'-"#$'577,'5'C#@',#<)$7,')C'#;-&5'5*78)'-)'-"#,#'C8?#,3'-5G#$'C&)6'2#C)&#'5$7'5C-#&'
-"#'7*6+'#%#$-='J"8,'65G#,'8-'#5,8#&'-)'87#$-8C('-"#'<)$-#;-='
<B'1.0',-56+,'-"#'C8?#,'@8-"'-"#'<*&&#$-'75-#'5$7'-86#3'5$7',-)&#,'-"#6'8$'$)$E%)?5-8?#'
6#6)&(='
7B'I-',#$7,'#8-"#&'-"#'<)6+?#-#'C8?#,3')&'-#;-'$)-#,'-"5-'-"#(:%#'2##$'<&#5-#73'-)'#E658?'
577&#,,#,'8$'()*&'1.EK?#&-',(,-#6='L#-*+'8$,-&*<-8)$,'5&#')$'+54#'MN=''
To smoothly end a delayed segment/

25-Seven Program Delay Manager Version 2.3 Manual April 2013 11
Whichever method you choose, PDM tells you where you are in the exit process. The
LCD will look like this:
!"#$#%&'''()**+,-./0'
''''''''''''
'
1*234''5678''''9*%:'
When 1*234 equals 0 seconds, PDM exits Delay mode, feeding the input signal to its
output.
Operating Modes
A visual note-
PDM is an advanced time-manipulation tool for radio broadcasters. But since we can’t
play audio in this manual, we’ll use graphics to explain how PDM operates.
These drawings might also help you visualize what PDM is doing when you press its
buttons. The top line (pink background) shows what’s happening in the studio: this is
what’s heard by the talent and producer. The bottom line (blue background) shows the
resulting audio that PDM sends to the transmitter or network feed. The white slash
through the blue line, beneath the DUMP button, shows where PDM has smoothly de-
leted material from the on-air program.
Build by Expanding, then Dump
Build is the process of recording incoming audio to PDM’s delay memory, so there’s
enough built up to cover the gap during a Dump event. There are other ways to build
delay, shown on page 15.
After you press EXIT, press and hold down COUGH, and then wait. Watch the LCD screen. When it gets
close to 1*234'-6.8, release COUGH and start talking again: PDM will smoothly transition to real-time
mode.

12 25-Seven Program Delay Manager Version 2.3 Manual April 2013
! Talent starts the program at the usual time, presses the BUILD button, and
starts talking. PDM will subtly slow down1the signal it sends to the transmit-
ter (shown in red), while storing the real-time signal in its delay memory.
When the delay memory reaches a pre-set limit, PDM’s output returns to normal pac-
ing (shown in black). But the output is delayed by that pre-set amount, to give you pro-
tection from objectionable material.
! When talent or a producer hears something unacceptable, they press the
DUMP button. PDM mutes the delayed signal before the obscenity, and in-
stantly jumps back in memory by a pre-set number of seconds. Talent can
continue talking, and the audience doesn’t hear dead air.
PDM then automatically starts building up its delay again.
Speed changes are virtually undetectable
We use the same time manipulation algorithms we developed for 25-Seven9s
groundbreaking Audio Time Manager.
PDM manipulates speed by intelligently splicing individual soundwaves, so pitch isn9t
affected and pauses aren9t unnaturally clipped. Critics have called our sound quality
GsuperbH.
For details on how this works, check www.25-Seven.com.
Cough Mode
We’re into a segment, and a delay has already been built. Talent wants to give a mes-
sage to the producer.
! Talent holds the COUGH button down. While it’s down, the delay memory
stops recording and talent is heard in the control room only. The audio al-
ready in memory (from before COUGH was pressed) still goes to the transmit-
ter.
1The degree of slowdown, delay memory limit, and Dump seconds can all be set from the front panel. So
can other important parameters. Instructions start on page 19.

25-Seven Program Delay Manager Version 2.3 Manual April 2013 13
This, of course, empties the delay memory by the number of seconds COUGH is held
down. When COUGH is released, PDM starts rebuilding its delay.
Another visual note/
In this manual, we squeeze or stretch the type font a lot to illustrate how PDM adjusts
audio speed. That’s because we wanted to make clear what’s happening.
In actual use, PDM’s functions are a lot more subtle. Most listeners won’t be able to tell
they’re in use. They’re also user-adjustable, so you can fine-tune the sound to your pro-
gramming and station’s style.
Exit Modes
PDM can handle the end of a delayed segment, before returning to real-time program-
ming, by Rolling Out or Compressing. Instructions for setting the mode are on page 22.
Exit by Rolling Out
This is the traditional method, similar to exiting an old-fashioned tape delay:
! Talent finishes a sentence, presses EXIT, and stops speaking.
! PDM continues to play previously-recorded material at normal speed, until
the delay is empty. Then PDM starts passing the incoming signal with no de-
lay.
! Note that COUGH is disabled during an Exit by rollout.
In this mode, nothing is recorded after Talent presses exit. It’s like Talent’s mic gets
turned off during roll-out, and then turned back on when the delay reaches zero. But it
all happens automatically inside PDM.
Exit by Compression
You can use this mode to exit delayed mode without talent ever having to pause.
! Talent presses EXIT and keeps on talking. PDM keeps recording audio into
memory.

14 25-Seven Program Delay Manager Version 2.3 Manual April 2013
! PDM subtly speeds up its output. Everything in memory plays out slightly
faster than normal. After a short while, the output catches up with PDM’s in-
put. Then PDM drops into non-delayed mode.
The time it takes to exit a delay using time compression depends on the size of the De-
lay you’re using, and the Speed setting you’ve given PDM. As a general guide:
Speed setting Minutes:seconds
to collapse 8-second delay
7 1:45
10 1:10
15 :45
Choose a Speed appropriate for your talent’s style of delivery, so listeners won’t notice
the time compression. Hosts who speak very quickly usually sound better with lower
PDM Speed settings.
Quick Exit with Compressed Roll Out
This is faster than using either Compress or Roll Out modes by themselves. It assumes
you’ve already set PDM to Compress mode.
! Talent presses EXIT and stops talking.
! PDM plays out what’s in memory, and subtly speeds up its output. Whatever’s
left in delay memory plays out slightly faster than normal.
! Producer or network listens to PDM’s output. After talent’s final word, press
BYPASS and go to the next program element.
Note that PDM is still recording during Compressed Roll Out, so there’s a possibility
that anything talent says after the segment is “over” might get passed to the transmitter.
Pressing BYPASS instantly switches PDM’s output to real-time and erases PDM’s
memory. That’s why you want to press it right after talent’s last word reaches the out-
put.

25-Seven Program Delay Manager Version 2.3 Manual April 2013 15
Exit by Crashing Out
This instantly switches PDM to real-time mode, and empties its delay
memory.
! Just press the BYPASS button.
Alternate Build Modes
You can choose how PDM will build up its delay, depending on programming needs
and how you like working. This choice can be made or changed at any time by using the
menu on page 22.
The two other modes are Build with Insert, and Build with PreRoll.
Build by Inserting an audio file
Set Build Mode to Insert. Then when you press BUILD, PDM will play a preset audio
file from its internal audio storage. Meanwhile, talent starts talking and the studio signal
is sent to PDM’s delay memory.
When the audio file finishes playing, PDM plays delayed audio. You can now use DUMP
as needed.
You can upload the audio files PDM uses from any computer on your network. See page
42.
PDM can hold multiple Build files. You can have different ones for different programs,
and select which one will get played from PDM’s front panel or a computer. See page
20.
If the selected Build file is exactly as long as the selected Delay Size, PDM will
smoothly join delayed audio at normal speed when the file finishes playing.
! If the file isn’t the same length as the Delay Size, PDM will still join delayed
audio when the file finishes. But it will subtly speed up or slow down the out-
put as needed, to achieve the preset Delay.

16 25-Seven Program Delay Manager Version 2.3 Manual April 2013
Build with PreRoll
You may want to build your delay without changing speed or playing an insert file. Pre-
Roll Mode lets talent start their introduction before the scheduled program time. This is
often done by studios feeding a network, rather than a local transmitter.
! Set Build Mode to PreRoll. Then, you can press BUILD and have talent start
talking earlier than the program is supposed to air. This early start, heard in
the studio only, should be the same number of seconds before airtime as
you’ve chosen for Delay Size.
For example, if you feed network at Noon and use a 10 second delay, you would back-
time and start the PreRoll ten seconds before noon. In other words, talent starts talking
at 11:59:50; PDM then outputs the material starting at exactly 12:00:00.
! The LCD will start to count up with numbers and a bar graph, like this:
Building Speed:10 89
Target Delay: 10.0 {}
Delay 3.4s Menu
While PDM is counting, studio audio is sent to PDM’s delay memory, and its output is
muted.
When the full delay time is reached (and the solid bar fills the screen), PDM starts play-
ing delayed audio to the air chain. If you started the PreRoll at the right time, this
should be exactly the right time to start sending the program to the network.
Delay times, time manipulation, and speed selections
PDM uses advanced time manipulation algorithms that don’t affect pitch and don’t add
harmonic distortion or frequency limitations. They also don’t rely on deleting pauses,
so they can be used on audio with continuous energy, such as musical performances or
background crowds at events. PDM’s algorithms excel at speech, and won’t destroy
your talents’ delivery.

25-Seven Program Delay Manager Version 2.3 Manual April 2013 17
Lower speed numbers cause the least amount of tempo change, and are usually imper-
ceptible. But they take longer to fill the delay memory, or to return to real-time.
Higher speed numbers fill the memory more quickly, but might cause a noticeable
speed change on fast-paced material. The highest numbers might also cause occasional
doubling of fast consonants or drumbeats while the system is building a delay.
Front Panel
Details of the rear panel appear in the Installation section, page 51.
Bypass: extreme right, not shown above.
The Input Level Meter monitors the signal going in to PDM’s processing circuit. At least
one of its LEDs should be flashing whenever there’s audio at any reasonable level. More
details on this meter appear below.
The Cursor buttons let you navigate around the LCD display. In this manual, they’re
shown as ¨, Î, Ò, and $for Up, Down, Left and Right.
The Enter button (shown as in this manual) is used to open menus and confirm
choices. The Cancel button () exits the current menu without making any changes.
The BUILD, EXIT, COUGH, and DUMP buttons are discussed starting on page 7.
The BYPASS button is used for emergencies or when you want to take PDM out of the
signal chain1. It connects PDM’s analog and digital inputs to its outputs, with no proc-
essing or delay. It also clears PDM’s delay memory.
PDM automatically goes into electrical bypass, connecting its XLR inputs to its match-
ing outputs, when power is removed. Analog inputs are passed to their respective ana-
log output; AES/EBU input is passed directly to the AES/EBU output. This is totally
passive and no level adjustment or analog/digital conversion takes place.
1Occasionally, you may need to do software updates or other system-level maintenance (page 55). Put
the unit in Bypass mode, or remove it from the signal chain, before beginning these operations.

18 25-Seven Program Delay Manager Version 2.3 Manual April 2013
Input Level Meter
PDM’s four color-coded LEDs indicate audio input level at the processor. They’re con-
nected after the analog-to-digital converter on XLR-equipped PDMs, so they can accu-
rately monitor any input regardless of the Input Sensitivity setting.
! If all four LEDs are dark, the input signal is below
-36 dBFS. This usually represents normal studio
background noise, with no talking or music.
! As the peak input signal increases between -36
dBFS and Full Scale, successive LEDs light up.
All four LEDs will light yellow if PDM is expecting a Livewire input but not seeing a valid
signal. This is usually a configuration problem. All four LEDs will also light yellow in the
unlikely event of internal error, even on XLR (analog and AES/EBU) systems.
PDM’s input meter shows instantaneous peaks as a diagnostic aid. It doesn’t display
RMS voltage or time-integrated level, and isn’t a replacement for the sophisticated
loudness meters found in a modern broadcast facility.
Detailed Operating Instructions
When PDM is first powered up, transport buttons will light, and the unit will be in By-
pass mode. After about 10 seconds, the LCD displays this initialization screen for a few
moments:
Welcome to
25 Seven Systems
PDM
Please wait...
Once the hardware is successfully initialized, the screen will update; the level meters
will show activity if there is a valid audio input. PDM stays in Bypass mode1, and a
screen like this appears:
PDM is in Bypass
10:32:00a
Menu
This says the current time is 10:32 AM. PDM can display time in 12 or 24
hour modes; see page 24.
Press to enter the configuration menus.
After you turn off Bypass mode, the “ready” screen appears. This screen also appears
after you exit a delay.
1You may also see a brief Waiting for audio stream message while PDM initializes its audio hard-
ware.

25-Seven Program Delay Manager Version 2.3 Manual April 2013 19
!!!!!"#$!%&!'()*+!
!!!!!!,-./0.--)!!!
!
#(1)+!-2-!!!!!!$(34
!
This says PDM is processing audio, and delaying it by whatever amount is
displayed on the bottom line of this screen.
• When you first enter '()*+ mode, PDM has no delay. This makes the
audio transition seamless.
• If you press BUILD, PDM starts to add delay and this number counts up.
If you press the BUILD button while the main screen is showing, PDM will start building
a delay.
General menu procedures
A few elements are common to many of PDM’s screens:
 $(34means press !to see a deeper menu. See PDM’s Menus, below.
 56means press !to apply a parameter change, and return to the next higher
menu. But it won’t be saved permanently within PDM. See Confirming
Changes, below.
 7879means press to return to the next higher menu without making any
additional changes. If you’re on the Master menu, pressing exits the menu
system and takes you to either the Main operating screen or the Confirmation
screen (next section).
 :;!7<=!>)14( means use ?!or @to change the value highlighted on this
screen
 AB!7<=!C%(1* appears when a screen has more than one value that can be
changed. Use Dor Eto select which value is changed by the ?!or @
buttons. The active field will be flashing on PDM’s screen.
 $FG(: and $FG(; mean use ?!or @to see more menu options in this category
Confirming Changes
If you’ve made any parameter changes while in the menu system, you’ll see a Confirma-
tion screen like this before you return to the Master menu1:
!!!7F3C%=4G)H%F3!
!!!!<)&!7<)3=(*!
!!!!!!!I)>(J!!!!KLI
!
!!!!!!!!!!!!!!!!85!
!
Press to permanently save these changes
Press to erase these changes and restore PDM’s former settings
If you don’t press either button, the Confirmation screen times out after three minutes.
Any changes you just made in the menu system are cancelled, and PDM returns to its
normal operating screen.
1Depending on which menu you’re in, you may need to press a few times to see the Confirmation
screen.!

20 25-Seven Program Delay Manager Version 2.3 Manual April 2013
PDM$s Front Panel Menus
These menus can be activated from PDM’s front panel, or via its secure Web interface.
For this part of the manual we’ll show the LCD versions.
If you’re controlling PDM from a Web browser, most of the GUI versions of the menus
will be virtually identical. The Web interface also includes extra configuration options
that aren’t available from the front panel. These start on page 31.
Master menu
If you press while !"#$is displayed, the screen will change to look like this1. Here
you can choose to adjust:
%&$'()*
*+)#,-)./*
*01/,"!*
*2",3)-4******5)-"6
*
Press to enter the Audio menu
…or use 7and 8to point to other menus on this screen
“More” means keep pressing 8to scroll to additional options (shown in
this manual under the double dotted line).
*9:;<*********5)-"=
*
*;#>)-!?,()#*
Press 7to see previous options (shown above).
Audio menu
%&$'()*;#@$,*
*&$'()*<$,@$,*
*;#@$,*0"#/A*
*<$,@$,*B"C".*
Select analog or digital inputs1
Select AES/EBU or s/pdif digital output. Analog output is always on1.
Adjust the analog input level to match your studio’s “0 VU”
Adjust the output gain to match studio’s “0 VU”
Audio menu options
 &$'()*(#@$,* Choose &#?.)D, digital &E0FEGH, or digital /F@'(> (all input
formats are stereo). Only one of these formats is available at a time.
 I(D(,?.*)$,* Choose &E0FEGH or /F@'(>. This affects both the data for-
mat and the electrical specification of the digital audio output connector
(page 52). The digital output is always active, even if you’ve chosen an analog
input.
 ;#@$, 0"#/A*(Sensitivity) The LCD will look like this:
;#@$,*0"#/A*
JKL'G$MNIGO0*
=6*+PD*Q?.$"*****<R
*
BS-TN**US-TN****+2+B
*
Current value is +14 dBu: this should be the absolute loudest analog
signal PDM will see in your installation.
Press 7or 8to change the input sensitivity.
Band Ushow the resulting digital levels for analog signals coming into
PDM. You can use these readings with an external test tone, to verify
Sensitivity settings.
1Some adjustment options don’t appear in specific hardware versions. Axia Source and Destination
menus don’t apply to PDM-XLR versions. Audio connections and levels aren’t used on the PDM-Livewire
version.