AEQ PAW 120 Installation instructions

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content
I. Profile
1. what is PAW120?
2. Looking at controls
3. Features
II. Getting started
1. insert battery
2. power on
3. recording
4. playback
5. power off
III. Basic operation
1. recording surface
2. MENU
3. select input device
4. connect with input device
5. compact template
6. PRE REC
7. REC
8. mark in
9. playback
10. search play point
11. delete file
12. move sound file
13. switch to other surface
14. AC power adapor
IV. Recording quality
V. File management
VI. Cutting
VII. System installation
VIII. Intercom connection
IX. Firmware upgrade
Profile 1
1. what is PAW120?
PAW120 is a kind of professional digital recorder. It is smart, easy to use and
extendible. PAW120 allows user do record, playback and cut, support the MUSICAM
format,BWF format and WAVE format. The recorder also can connect with PC via
USB interface, you can upload or download audio files you needed.
1. What is PAW120 ?
2. Looking at controls
3. Features

Record
PAW120 allows user to pre-define some templates with which the journalist doesn’t
have to choose the detailed technical parameters when he/she wants to start a
recording. He/she can only select the template like ‘Voice, stereo, SONY 907’ or
‘Music, PCM, Line In’, whatever. You also can rename the file in File management
modular.
Playback
You can playback in stop status by press PLAY/STOP button. The user can monitor
the sound file with earphone or speaker.
File management
In file management modular, You can do delete, copy, remove operations.
Edit
You can cut the unnecessary part of sound file to release storage space.
OLED display
PAW120 has a large big OLED display, 128*128 you can browse your file clearly
even in the sunlight or dark.
2. looking at controls
EXT MIC extern stereo MIC plug
OLED Highlight display
REC LED rec lights up in recording
SPEAKER inside speaker
OK confirmation or
slip into the PRE REC mode.
CANCEL cancel or
pop out working modular window
LEFT to left or search
RIGHT to right or search
UP to up or
to choose the last recording of previou
s
DOWN to down or
to choose the next recording of previou
s
PLAY/STOP play or stop
CUT cut or delete
A
-B A-B circle

LINE IN unbanlance stereo line-in plug
STOPPLE lid of plug
RECORD slide to start recording
ALC Automatic gain control
HOLD slide to lock the control of panel
EARPHONE stereo earphone plug
LINE OUT unbalance stereo line-out plug
VOLUME+ adjust the volume
VOLUME- adjust the volume
USB PORT USB interface
3. Feature
!Maximum recording time
capacity/bit 8kbps 32kbps 128kbps 384kbps
256MB 71hours 17hours 4 hours 1.5hours
512MB 142hours 35hours 8 hours 2.9hours
1GB 284hours 70hours 17hours 5.9hours
!specification
"Frequency response . . . . . . . . .10Hz to 20kHz, - 0.5dB
"Wow & flutter . . . . . . . . . . . . . . Below measurable limits
"Signal to noise ratio (playback) . . . . > 89dB bandwidth

22Hz to 22kHz
"Dynamic range (line input) . . . . . . . . . . . . . . . . . > 96dB
"Microphone EIN . . . . . . . . . . . . . . . > 122dB A-weighted
"THD & N @ 1kHz ref 0dBFS . . . . . .< 0.02% bandwidth
22Hz to 22kHz
"Ext MIC Filter Select . . . . . . . . . . . . . . . . .22Hz~22kHz /
100Hz~22kHz
"Ext MIC max gain. . . . . . . . . . . . . . . . . . . . . .
"Ext MIC min gain. . . . . . . . . . . . . . . . . . . . . . . .
"Earphone max power . . . 18mW(L) + 18m(W) (16Ohm)
"Line max input level. . . . . . . . . . . . . . . . . . . . .
"Line max output level. . . . . . . . . . . . . . . . . . . .
!Physical feature
"length. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121.4mm
"width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.5mm
"height. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.0mm
"temperature. . . . . . . . . . . . . . . . 0~70℃
"humidity . . . . . . . . . . . . . . . . . . . . 20%-80% . .
!input/output interface
"Inside mono MIC
"Extern stereo MIC 3.5mm stereo plug
"Unbalance line-in 3.5mm stereo plug
"Unbalance line-out 3.5mm stereo plug
"Stereo earphone output,3.5mm stereo plug
"USB1.1 interface
!Voice on record
"Start recording accord input level.
"Two ways for Voice control,pause REC or split track
"Voice control triggering level turnable.
"Mute time delay is turnable.
!Automatic gain control
!Standard Windows FAT16 file system.
!Optional document management.
!Audio file cutting

Step 1 Insert battary
Step 2 Power on
Step 3 Recording
Step 4 Playback
Step 5 Power down
Fig-2-2
Getting started 2
STEP 1 Insert Battary
1. Slip the lid of battery according to arrow. As the Fig-2-1 shown.
2. Insert 2 AA cell battery in right direction,and close the lid.
(1) Replace battery
Battery indicator on the right corner of screen show status of battery, Fig-2-3
Please replace the battery when the indicator show out of battery.Preserve all the
document before your replacement.
(2) Battery life
The charging time may vary depengding on the battery condition.It can continue
recording more than 18 hours with the common alkali dry battery.You’d better use
the High-power alkali dry battery.
NOTE:
Fig-2-1

Fig-2-4 Fig-2-5
STEP 2 Power On
1. Check the HOLD switch not locked
If you can’t start the recorder,make sure the recorder is not locked.If the hold switch
slide up,when you press the power key, the recorder will power down in 3 sec.
2. Press the power key lightly ,as the Fig-2-4 show, about half sec, untill you see the
welcome surface.
You have to press the PLAY/STOP button untill you see the welcome surface,at this
time, the red LED recording indicator light up, Fig-2-5 shown the welcome surface
STEP 3 Recording
1. Slide up the record switch, then the recorder start recording with the default
parameter.The recording indicator flashing while recording.Fig-2-6
Test environment: 48K simpling, 64k bitrate, mono,
MPEG1-LayerII compact format, screen saver on.
Charging time may vary depending the battery condition
and user’s operation.
Please replacing two new battery a time when it is out of
power.
Not recharge the dry battery.
Remove the dry battery from the recorder when it is not to
be used for a long time.
The recorder work with the parameter you
setted, the user has verity selections of input
device and compact template,that can
pefectly connect with different input device
and get high compact quality.INT MIC is the
default input device.BWF format is default
compact setting.
Fig-2-6

2. Keeping press PLAY/STOP button untill finish the progress strip,you enter in the main
surface, as Fig-2-7 shown.

STEP 4 Playback
1. Select file for playback,in stop status.
You can browse all the files of cerrent working directory in stop status. File counter
show the total number files of current directory and current file number.The file to be
played is the latest recorded track.
2. Play sound file by press PLAY/STOP button.
You can adjust the monitor volume by press VOL+ or VOL-, that can turn up or turn
down the volume but it won’t change the file level.
STEP 5 Power Down
Power down by press PLAY/STOP button more than 5 sec. Fig-2-8
Fig-2-7
You have to keep press the PLAY/STOP
button untill finish the progress strip, this
program design for unwanted stop, if you
release your finger before finish the strip,
that means you have given up this operation
Keep on pressing the PLAY/STOP button till the
screen shut.if you move your finger away before
finish the progress strip, that means you give up
power down.
Fig-2-8

Fig-3-1 Fig-3-2
Basic operation 3
1. Record surface
Record sueface is the main surface of PAW120, as the Fig-3-1 and Fig-3-2 shown.
More details in table-3-1
MENU of recording surface
items option description
Set input device All available template Set input device for
recording
Set compress template All available template Set compress template for
recording
Set VOR mode VOR Off
-10dBFS
-20dBFS
-30dBFS
-40dBFS
Set start level of VOR and
turn off VOR, VOR off is
default setting
Set VOR stop mode pause rec
split track
Set vor stop mode,default
option is pause rec
Set VOR stop delay 5 sec
10 sec
15 sec
20 sec
Set delay time of VOR
stop,default option is 10
sec
Set AGC target level -5 dBFS
-8 dBFS
-11.5 dBFS
-14 dBFS
Set AGC target level,default
option is -5 dB
Set pre-rec buff 300 ms
500 ms
1000 ms
1.5 sec
2 sec
3 sec
Set pre-rec buffer time
Set work directory Pop up a window Set working directory
2. MENU
“MENU” is the main design idea of PAW120. We want to make the operation more
easy,Fig—3-3 show the MENU , You can select your object by press UP or DOWN
button, and press OK comfirm your selection.In the MENU, right button equal to OK
button, left button equal to CANCEL button.

3. Select Input device
PAW120 provide 10 input device,you can choose your object in MENU.
Use unlimited CANCEL to go back
any numbers of steps,on the left
screen conner shown the new device
name.Fig-3-4
4. Selection of input source
There are 3 types of input supported by PAW120:
INT mono MIC
External stereo MIC
Stereo unbalance line in
Fig-3-3
1. make sure you are in the stop
status.
2. press MENU button
3. high light “input device” by press
up or down button
4. press OK button or right button,
skip into sub MENU
5. select your object
6. confirm your selection by press
OK button
7. press CANCEL button to close
MENU.
Fig-3-4
Fig-3-5 show the inside MIC
position, which there is no
need to connect, when you
use INT MIC for recording, let
the hole in right direction. It’s
better to towards the sound
souce.
When the input source is
LINE IN or External MIC, you
have to remove the cover first
and take good care of it.

When you choose IECM-1 MIC as your input source, please check the plug in
position.
Use 3.5mm stereo plug or conversion patchcord connect with LINE IN MIC.Fig-
3-6 Connect with yourself extern MIC
The conversion patchcord in the pakage is used for connect with 2 mono MIC
in same type.
5. Compact Format
PAW120 recorder provides many compact format and conpact rate.You can select input
source and encording format for various sound quality and medium capacity.
Fig-3-5
Fig-3-6
Fig-3-7
1. enter recording surface
2. in the stop or pre rec statement
3. press MENU button
4. high light “compact template”
5. press OK button or right button,ente
r
sub MENU
6. select device you need by press up
button or down button
7. confirm your selection by press OK
button or right
8. press cancel button to close MENU Fig-3-8

Use unlimited CANCEl to go back to any numbers of step.
6. PRE REC
Right after you enter the PRE REC surface, you can detect the volume effect while
setting the parameter, we have to know that the signal is the sampling of ADC which
show the real digital quatitize quality, but not the compressed quality
You can enter PRE REC status by press OK in stop statue, at this time, the circle on the
right corner of screen turn into hollow circle.
1. check input device
2. check input template
3. check AGC status
4. check VOR status
5. face to the MIC, and speak, you can get the information that whether the input level
out of range by viewing the VU meter.
6. You can adjust the recording level, by press RIGHT / LEFT button, in the VU meter
you can view the level while you speak towards MIC.
If you have finish the setting, you can start recording right now, press PLAY / STOP
button quit recording.
7. Recording
After confirming input device and compact template, push up the RECORD button, then
start recording, as picture 2-6 displayed.
When recording, you can observe the REC LED flash once per second, at the same time
the screen displays circulation flashing between hollow circle and solid circle.
When recording is over, press PLAY/STOP button a little longer, then the stop recording
dialog frame will show up. As picture 2-7 displayed. After finishing dialog frame, decide
the recording.
When the storage space near empty, the system will stop recording automatically, go
back to stop situation.
If the screen saving function was switched on, after start recording, you don’t press any
button in a long time, the system will shut down screen automatically. At this time only the
REC LED was flashing, you will know if the recording was going on by observing REC
LED. Press any button can quit the screen saving situation.
8. Insert mark point
You can insert mark point to one sound file by press OK button while recording. Press left
/right butoon to find markpoint.
9. Playback
Press PLAY / STOP button to play the sound file you selected, press the button again to
stop it.
You can adjust the volume by press VOL+ /VOL-
On the screen you can get information of the current file, include: track ID, progress, total
length, remaining.
10. Search play
You can search the play point by press RIGHT / LEFT point.
11. Delete file
You have 2 ways to delete files, one is in the record surface, the other is in file manage
surface(show in the file management chapter)
In the recording surface, it is convenient to delete a file by press CUT button, a dialog
box like Fig show will confirm your order, high light” delete “, press OK button.
When you record a sound file, system creat a directory in sync, extern name “DIR”. If you
delete this sound file, the ditectory will delete in sync. But the directory won’t be delete,

12. Move sound file
A file folder named RECORD is the default working directory. All the sound file will put in
this file folder. The user can change this setting in MENU in stop status.
High light the current working directory, As the Fig-3-10 shown,press right button or OK
button, then enter the sub MENU. You can enter any directory by press OK button.
Press CANCEL backward the last step.
You can use unlimited CANCEL to back to any numner steps.
13. Switch surface
PAW120 provides 3 modulars as the Fig-3-11shown, they are:
recording surface
file management
system installation
Only two modulars will be shown in the frame, when you press CANCEL button, at this
time, you keep on press RIGHT button, you can find the “system installation” indicator.
1. make sure you are in stop status
2. make sure there is any MENU or dialog box pop up.
3. press CANCEL button
4. select your object by LEFT / RIGHT button.
5. Confirm your selection by press OK button, else by CANCEl.
14. AC power adaper
Using AC power supplid is reccomended for recording. The AC power adapor is MINI
USB interface.first you have to plug it to a wall outlet, then connect it with recorder, a
selection windows will pop up, choose USB power supply.
The AC power adaper only used for PAW120 recorder, it can’t be used for other
equipment’s power supply. The input voltage between 110v and 240v.

RECORDING QUALITY
4
1. The reason that influenced recording quality
PAW120 can improve the recording quality, but the establishment is not right, it can
influence recording quality. The reason is as follows:
◎whether input equipment gian (front gain and boost gain) does match.
◎whether input equipment electricity power provising does match.
◎Whether the filter choice of input device does match
◎the level of recording device whether high or low.
◎Whether the compact algorithm does conform to the requirement
◎whether the compact parameter is (sampling frequency, compact position
rate, stereo sound condition) correct
Different input device should match different gians, we should establish the right gain
according to operating instruction of choosen device. Too little gain may cause lower
recording volume and the recording detail loss. Too high gain can increase the
background noise and enviroment noise, decrease the big signal wave, even can cause
the self-impovising phenomenon. The five kinds input device gain that PAW120
supported, see the table-4-1.
Input device parameter
type Analog gain BOOST
Power
supply
filter
INT MIC 06dB ――― ―――― ――――
EXT MIC 024dB 19/34dB ON/OFF
20-20kHz
100-20kHz
LINE IN 024dB ――― ―――― ――――
LINE HI 0dB ――― ―――― ――――
LINE LO 24dB ――― ―――― ――――
·establishment about outside MIC
Self-power MIC doesn’t need power supply,  MIC and condencer MIC need power
supply(concrete power supply requirement, follow the MIC’s factory instruction). Open
power supply to the MIC that don’t need it may cause input without signal.
·About line input device
line input device can use customer connected console or kinds like MD, when the
establishment is the common line input device, customer can adjust the front simulation
gain freely. When the establishment is high level, the device can accept undistortion
signal input of maximum +17dBu. When the establishment is low level, the device can
accept undistortion signal input of maximum-7dBu. But in both style, customer can not
adjust front gain.
·about display and establish range of recording level
Recording level can be established according to real recording condition.

When equipment type of the template establishes as inner MIC or outer MIC, recording
level demonstrate as SPL level, the adjustable scope is 144Bspl-84dBspl.
When equipment type of the template establishes as the ordinary line input dev ice, the
recording level demonstrate as the gain control value, the adjustable scope is 0dB -
60dB.
When equipment type of the template establishes as the high line input device, the
recording level demonstrate as the maximum output level of outside connected input
device, the adjustable scope is+21dBu- -8dBu.
When equipment type of the template establishes as the low line input device, the
recording level demonstrate as the maximum output level of outside connected input
device, the adjustable scope is+16dBu- -44dBu.
Sound repeat quality decided by compact algorithm,16bit WAVE is the highest algorithm
of fidelity, it doesn’t need any compression, but the production document volume is huge.
MPEG1-LayerII is the broadcasting compact algorithm, 192k compact ratio come close to
CD quality. See establishment scope of All kinds algorithm in table -4-3
Input device default setting
name type
Analog
gain
BOOST
Power
supply
Filter
DYN EXT MIC +6dB 34dB OFF 20-20kHz
IECM-1 EXT MIC +9dB 19dB ON 100-20kHz
COND EXT MIC 9dB 19dB OFF 100-20KHz
INT INT MIC 0dB ――― ――― ―――
LINEH LINE HI 0dB ――― ――― ―――
LINEL LINE LO 24dB ―― ――― ―――
Compress algorithm parameter
algorithm
Sampling
frenquency
Compress bit
16bit WAVE
48kHz
44.1kHz
32kHz
24kHz
22.05kHz
16kHz
768kbps mono,1536kbps
stereo,
705kbps mono,1411kbps
stereo,
512kbps mono,1024kbps
stereo,
384kbps mono,768kbps stereo,

352kbps mono,705kbps stereo,
256kbps mono,512kbps stereo,
MPEG1 LayerII
48kHz
44.1kHz
32kHz
32kbps mono,
48kbps mono,
56kbps mono,
64kbps mono,64kbps stereo,
80kbps mono,80kbps stereo,
96kbps mono,96kbps stereo,
112kbps mono,112kbps stereo,
128kbps mono,128kbps stereo,
160kbps mono,160bps,stereo,
192kbps mono,192kbps stereo,
224kbps stereo,
256kbps stereo,
320kbps stereo,
384kbps,stereo
CCITT a law
48kHz
44.1kHz
32kHz
24kHz
22.05kHz
16kHz
12kHz
11.025kHz
8kHz
384kbps mono,768kbps stereo
352kbps mono,705kbps stereo
256kbps mono,512kbps stereo
192kbps mono,384kbps stereo
176kbps mono,352kbps stereo
128kbps mono,352kbps stereo,
96kbps mono,192kbps stereo,
88kbps mono,176kbps stereo
64kbps mono,128kbps stereo
CCITT u law
Same with
CCITT a law
Same with CCITT a law
G.729.a 8kHz 8kbps
Compress template default setting
name File format Sampling Bitrate Extern

algorithm frequency name
HI QUA
WAV format
16bitPCM
48000Hz
1536kbps
stereo
WAV
MUSIC
BWF format
MP1L2
48000Hz
256kbps
stereo
WAV
SPEECH
BWFformat
MP1L2
48000Hz
64kbps
mono
WAV
STENO
WAVformat
G.729.a
8000Hz
8kbps
mono
WAV
2. The function of template
Works who engage in audiofrequency should do their best to increase recording level, to
get higher signal to noise ratio and control the maximum level precisely, keeping the
lowest distortion. It’s need lots of professional knowledges and richful work experience to
achieve that goal..
We want to make the operation easy, PAW120 introduce the conception of template, put
complex technical parameter into two kinds template establishments that input device
template and compact parameter template. Before recording, only if choose the right
template you can get satisfied recording effect. In PAW120 ,the template which
often been used is alway put inside it, to fit different external devices and effect
requirements customers can also modify the template by themselves.
3. Set input device template
Enter the system setting surface, select “manage input device”item,then you can see all
the 10 input device template, choose the template that you want to modify,Fig- show
modify surface, in this surface preserve the modified result and quit,press OK, to give up
modify and quit,press cancel.
NAME: input the template’ name, press VOL+/- button to modify the name, press
LEFT/RIGHT button to choose next character, press UP/DOWN button to choose next
items, in this clause you can input maximum 6 characters, character’s scope is “A”---“Z”,
“0”---“9”, “-”, and space. Name’s ending space will eliminated automaticly.
TYPE: input device type is devided into
NONE:vacuity device. After choosing this device type, in put device’s parameters can not
be modified,the template of this type will not show up in recording surface’s “input device
choosing”
INT-MIC:after choosing this type, only gain can be established the scope is 0---6dB.
EXT-MIC: external MIC
LINE:common line input device, after choosing this type, only gain can be established the
scope is 0---24dB.
LINE HI: high level input device after choosing this type, input device’s other parameters
all can not be modified.
LINE LO: low level input device after choosing this type, input device’s other parameters
all can not be modified.
GAIN: device’s front simulation gain
BST: device’s front Boost gain establishment,adjust scope of corresponding ,see table
PWR: device’s power supply choosing only when device type choose id EXT-MIC, this
clause is effective

FLT:device’s filiter choosing only when device type choose id EXT-MIC, this clause is
effective
4. Setting compact template
Enter the system setting surface, select “manage input device”item,then you can see all
the 10 input device template, choose the template that you want to modify,Fig- show
modify surface, in this surface preserve the modified result and quit,press OK, to give up
modify and quit,press cancel.
NAME: input the template’ name, press VOL+/- button to modify the name, press
LEFT/RIGHT button to choose next character, press UP/DOWN button to choose next
items, in this clause you can input maximum 6 characters, character’s scope is “A”---“Z”,
“0”---“9”, “-”, and space. Name’s ending space will eliminated automaticly.
Core: compact algorithm and file format
NONE:vacuity device. After choosing this device type, in put device’s parameters can not
be modified,the template of this type will not show up in recording surface’s “input device
choosing”
RAW-MP1L2: no file format’s MP1L2 algorithm
WAV-PCM16:WAVE file is MICROSOFT standard RIFF source changing format,compact
format is 16 bitrate quantized PCM cord
WAV-G729a: WAVE file is MICROSOFT standard RIFF source changing format, compact
algotithm is G.729.a regulated by AT&T.
WAV-aLaw: WAVE file is MICROSOFT standard RIFF source changing format, compact
algotithm is aLaw regulated by CCITT.
WAV-uLaw: WAVE file is MICROSOFT standard RIFF source changing format,compact
algorithm is uLaw regulated by CCITT.
BWF-MP1L2: Accord with GY/T 168-2001 broadcasting audiofrequency date file format
standard’s BWF file format, compact algorithm is MP1L2
WAV-PCM16: Accord with GY/T 168-2001 broadcasting audiofrequency date file format
standard’s BWF file format, compact algorithm is 16 bitrate quantized PCM cord.
S.R: Audio sampling frequency,Fig- show defferent compact algorithn range.
B.R: Audio compact frequency, Fig- show defferent compact algorithn range.
EXT: Externtion name of recording file, in order to improve file system’s efficiency
recommending set less than 3 charaters’ file externtion name.
5. AGC function
AGC modular provide automatically gain control while recording, it can keep the
recording level in set value,let you get satisfied signal to noise rate.
Slide up the AGC switch, you can get the set value of AGC on the recording surface, and
also can change the value in MENU, you have 4 choices for AGC level, they are -5dBFS,
-8dBFS, -11.5dBFS, -14dBFS.
AGC actuating time accord with sampling frequency, the ATTACK time of AGC is 485
sample point,and the DECAY time is 4410 sample point. Fig show classic sample
frequency of ATTACK time and DECAY time.
Attack time and decay time
Sample frequency ATTACK TIME DECAY TIME
48kbps 10ms 92ms
32kbps 15ms 137ms
8kbps 61ms 551ms
6.PRE REC buffer time
PAW120 reserve a buffer area in PRE recording modular, if you have set the buffer time.
you won’t miss any important sound file, even in the emergency situation.
7.VOR function
VOR is short for ‘voice on record’,that means recording depend on voice.The recorder
can detect the input level after you slide up the VOR switch, if the recorder detect the
input level lower than the set value, the recording file will paused or closed, on the other
hand, it will recovery or start a new file.

File management 5
Switch to the file manage modular, system will enter the default working directory, you
can manage all the files and contents in this modular.
name description
play Switch to the manager surface, highlight the file which
is able to be played
delete You can delete directory and all files in it, a window will
pop up for comfirmation
edit Only availiable for editable file
wipe Pop up a progress window for wiping files that have
been cutted
Copy to … Copy the file to the other directory, a window pop up to
make a confirmation
Move to … Move the file to other directory,a window pop up to
make a confirmation
Make dir Set a new file folder
rename Rename current file or directory
You can browse all the files in current working directory,and get your object with UP or
DOWN button, you can get the information of file format, real time, and record time in
preview frame. Play the file by press PLAY/STOP button, adjust the volume by press
VOL+ / VOL-.
You can enter the edit surface,if the file you selected is able to edited.