| .......Applications information for long play recorders (Document size is 25 KB, 6 printed pages) | |||||||
CHAPTER 1: General troubleshooting procedures
In our experience with long play tape recorders, the vast majority of "problems" can be solved by carefully reviewing this troubleshooting guide. Please be assured that all our tape recorders are 100% tested prior to shipment; although, on very rare occasions, a problem "escapes" us, MOST "problems" are NOT with the recorder. Before calling us, PLEASE READ the instruction manual that came with the recorder and please refer to this troubleshooting and applications information. Of course, if you still experience trouble after reviewing this info, one of our applications engineers is only a phone call or e-mail away. We will now present typical "problems" in a "Question/Answer" format.
Q. The
recorder will not run (nothing moves). What is wrong?
A. Did you plug the
recorder's AC cord in a "live" AC outlet? If you are
not sure whether the AC outlet is "live", try to plug
in a table lamp to make sure. If you are using batteries, are the
batteries FRESH? If you have a battery checker, test the
batteries.
Q. I spoke into the microphone, but when I tried to
listen to the recording, there is NOTHING on the tape---
A. Did you rewind the tape
to the position where you started recording? When you recorded,
did you use the "manual level control" mode, but did
you leave the record level control at the lowest setting, rather
than turning it up to the proper level? Did you start recording
at the very beginning of the tape? On the 10 and 12-hour
recorders, the tape has a blank leader at the start of the tape.
You CANNOT record on this blank portion of tape. For a 10-Hour
recorder, this blank leader is approx. 30 seconds long. Rewind
the tape fully, then put the recorder in the "record"
mode and wait 30 seconds before you start recording. Or, rewind
the tape fully, then reset the counter to 000 and wait until it
reaches 001 before making a recording. The 14 and 16-hour
recorders use leaderless tape and you can start recording right
away.
Q. I
made a voice recording on a 10-hour recorder. When I play it back
on my car stereo, it sounds like "Mickey Mouse, very
high-pitched and very fast. What is going on?
A. Recordings made on long
play recorders run much slower than a regular recorder. You
CANNOT play them back on a normal recorder.
Q. I
use "metal" tape to make recordings on my home tape
deck. When I try one of these in my long play recorder, it sounds
AWFUL. Why is this? These "metal" tapes are supposed to
be much better than regular tapes...
A. Yes, "metal"
tapes are great for making recordings on a regular home cassette
deck. BUT, our long play tape recorders are SPECIFICALLY designed
to obtain the best possible fidelity using REGULAR BIAS tapes.
Q. The tape you supply with the 10-hour
recorder is a C120 tape. If I use a C60 or C90 tape, how long
will they run in a 10-Hour recorder?
A. C60: 2.5 hours per side
for a total of 5 hours. C90: 3.75 hours per side for a total of 7.5
hours.
Q. I
want to make recordings off my scanner or short-wave receiver.
How can I do this?
A. IF your scanner or SW
receiver has an output jack marked "tape out" you can
USUALLY just connect a patchcord with matching plugs between the
"tape out" jack of your receiver and the "AUX"
jack on the long play recorder. For further information see
chapter 2: "Recording from scanners and receivers".
Q. I am
trying to make a recording from a scanner/receiver/telephone/other
external source and I have made what I believe to be the proper
connections, but when I play the tape back I hear a lot of:
distortion/hum/very loud sounds. What is wrong?
A. To determine WHERE the
problem is, just make a test recording by speaking into the
microphone of the recorder. If the playback sounds distorted:
Did you use the proper tape?
If using batteries, are they FRESH?
Is the record/playback head dirty?
Are you using the manual record level mode? Is the Volume Control
turned up too high?
If your test recording sounds OK, the problem is NOT in the recorder. The problem is therefore in the connections between the external audio source and the recorder. UNLESS the external audio source is properly matched to the input of the recorder in terms of LEVEL and IMPEDANCE, you WILL get distortion etc. When recording from an outside audio source and using the manual record level mode, did you turn the record level up too high? If you are using the ALC record mode and your recordings are too loud/distorted, then you are "feeding" the recorder more audio than the ALC can handle.
It is very important to "feed" the recorder properly!!!
Q.I have connected my short-wave receiver that has
a "line out" jack to the "aux" input
of my long play recorder. The recordings are clear and without
distortion, but there is a "hum" in the recording---
A. Your receiver not being
grounded probably causes the hum, Try grounding your receiver.
Q. I
want to use one of those Radio Shack recording devices to make
recordings of my phone calls. These devices will automatically
start a cassette recorder when I pick up the phone, record my
call and stop the recorder when I hang up. But they will NOT work
with the 10-Hour recorder----
I get a lot of HUM and the recorder does not stop running when my
phone is hung up. What is wrong??
A. The Radio Shack (and
similar) automatic recorder activators will work FINE with
normal, consumer-grade cassette recorders, but they are NOT
suitable for use with professional recorders. One of the reasons
is that these activators have one side of the telephone line
connected to the "remote" plug. Therefore, they cannot
be used with recorders that have an AC cord with ground pin. Even
with the recorder used on battery power, these activators will
NOT turn the recorder's motor on and off. For further
information please refer to chapter 3:"Making recordings of
your phone calls.
Q. How
long is your warranty? How do I send you my recorder in case it
needs repairs?
A. One year parts and labor.
See our catalog for warranty information. Call us for a repair
number BEFORE Sending in your recorder for repairs in or out of
warranty
CHAPTER 2:Making recordings from scanners and other receivers
This chapter will provide some basic information on automatic (unattended) recording from scanners, short-wave receivers, AM/FM receivers, etc .Due to the great variety of equipment on the market, we recommend that you thoroughly read the owners manual that comes with your scanner or receiver. The owners manual should discuss connections to tape recorders.
1. Scanners with a "tape recorder " output:
The scanner manual will explain whether to connect this output to
the microphone input or the "aux" (or "line")
input of a recorder. When using a voice-activated recorder, the
recorder will start automatically when the squelch breaks on the
scanner. You will need a patchcord with the proper plugs.
2. Scanners with a "tape recorder" AND "recorder
start" output:
The scanner will start the recorder when the squelch breaks. You
will need a regular long play recorder (not voice-activated) and
patchcords with the proper plugs.
3. Scanners that ONLY have a "speaker" or "
earphone" output:
You CANNOT use a regular patchcord for connection to a recorder.
If you do, there WILL be distortion and/or hum and/or other
assorted disappointments, because a regular patchcord does NOT
provide a proper signal transfer to the recorder. You will need
to make or buy an ATTENUATING patchcord. If you use an
attenuating patchcord, such as our PC1, you need a voice-activated
recorder.
4. Other types of receivers abcd
You can make unattended recordings from other types of receivers
IF:
....A. The receiver has a "tape
recorder" output and a squelch OR
....B. The receiver has a "tape
recorder " and a "recorder start" jack OR
....C. The receiver has a "speaker/earphone"
jack and a squelch.
See above for hardware requirements.
NOTE: Some receivers have a
"timer" output that will start and stop a recorder at a
preprogrammed time. A recorder used with those receivers need not
have the VOX option since the recorder's motor is turned on from
that "timer" output.
Q. I
need to turn on my receiver and recorder between 2 and 5 a.m. to
record a radio show. How can I do this?
A. Purchase an inexpensive
(typically $4.99) plug-in appliance timer at your supermarket or
hardware store. These timers are normally used to turn on an
appliance such as a coffee maker. The timer plugs into a wall
outlet and has an output in which to plug the appliance. Simply
preset your receiver to the proper frequency, connect it to your
recorder, put the recorder in the record mode, plug both receiver
and recorder into the timer, then set the timer to come on and go
off at the desired time.
Q. I
have connected a long play recorder to my
scanner. Everything works fine, but when I play back the
recorded material I can hear a low-pitched hum in the background.
How can I get rid of this?
A. Your scanner is quite
probably not equipped with a 3-prong power cord, but is powered
by an AC adapter that plugs into a wall outlet. The scanner is
therefore not grounded, but the recorder, which has a prong cord,
IS grounded. This causes the hum. There are 3 solutions to this:
1. Reverse the scanner's AC adapter in the AC wall outlet.
Note: some AC adapters have
pins of different sizes, so reversing cannot always be done
2. Purchase a 3-prong to 2-prong adapter for
your recorder's power cord. This "ungrounds" the
recorder.
3. The above "tricks" solve 95% of all hum problems. If
hum still persists, try running a wire from the chassis of your
scanner to the screw in the middle of your AC outlet. Plug the
recorder in WITHOUT the 3-prong to 2-prong adaptor.
If none of the above helps, you have a bad connection in the
shielding of the audio cable between the scanner and the recorder.
Re-solder the shield connections or replace the patchcord.
CHAPTER 3: Making recordings of your phone calls
Recording your telephone calls SEEMS to be a simple operation;
just plug a "magic box" into your telephone jack and
plug the other end into a recorder
It is not always as simple as that, so in this applications
document we will try to present some helpful information in a
"question and answer" format.
Note: You can also see a page showing
our telephone interfaces. Hit: (Telephone Interfaces page)
Home telephone installations:
Q: My
home has ONE telephone line (one phone number). There are
telephones on this line everywhere in my house. Can I plug a TA-100 with a VOX recorder into ANY phone
jack and record my calls from ALL my phones?
A: Yes, all calls from all
phones on that line will be automatically recorded.
Q. I am
trying to use a Radio Shack (or similar) telephone-recording
device with my 10-hour recorder. I get hum on the telephone line,
the recorder will not start/stop, etc. Why will this not work?
A: Please understand that
this applications document is NOT "Electronics 101.
The SHORT answer is because these types of devices are not
galvanicaly isolated from the telephone line.
Q: My home has 2 telephone lines (2 phone numbers).
My phones are 2-line types that plug into ONE modular jack (RJ14
jack) What options do I have with regard to recording my calls?
A: 1. To record your calls
on line 1 ONLY: plug a duplex adapter into ANY phone jack. Plug
your 2-line phone into one of the openings: plug the TA-100 into
the other opening
.....2. To record your calls on
either line on a ONE telephone youll need a VOX recorder
and a TC-10.
.....3. To record your calls on line
2 ONLY is a bit trickier. There are four wires involved in
getting your two telephone lines to the jacks you use. The wires
are color-coded. It is customary to use red and green for line
one and use yellow and black for line two. You must take off the
jack's cover, loosen the screws holding the spade tips of the
wires going to the jack, which is part of the cover; and
interchange the spade tips. Interchange the spade tips going to
the red and yellow wires, and then interchange the tips going
from the green and black wires. Reconnect the cover. Now when you
plug in the TA-100, it will be working with the number two line.
Note: If you plug a duplex
adapter into the jack so you can also use a two line telephone
there, you'll notice that the lines are backwards on that
particular telephone- line two is now where line one used to be.
Q: I
use a room in my home as an office. I want to record the calls I
make from the phone in that room ONLY, not all calls made on the
same line from other phones in the house. How?
A: Use a TC-10. It connects between the base and
the handset of a telephone and records all calls made using that
handset, regardless of how many telephone numbers are involved.
Q: When I record my calls with a TA-100 and a
VOX recorder, the recorder sometimes stops when the distant party
speaks very softly. I tried increasing the VOX sensitivity, but
the recorder still stops now and then. What can I do?
A: Is the ALC switch ON? If
the problem still occurs, this means that the ALC cannot
compensate for the very weak audio from your distant party. The
ALC is designed for NORMAL differences in audio levels. It MAY
help to switch to MANUAL level control and turn it up fairly high.
However, this may cause the local voice (your voice) to sound
distorted on the recording. Another disadvantage is that the
recorder may not turn off automatically at the end of your call,
because it may start on normal telephone line background noises
after you hang up. The best solution is to switch the VOX off,
turn the ALC on and manually start the recording process.
Q. I
often make calls with soft-spoken distant parties or where
telephone connections are poor and I need to make recordings
AUTOMATICALLY even under such conditions. What are my options?
A: We recommend the TA-2000. This telephone interface has
audio compression which keeps the signal level much more constant.
Business telephone systemsdefg
There are many different business telephone systems on the market, each with its own unique "challenges". Plugging a TA-100 into a modular jack will not work.
Q: I
have a system with 6 incoming lines and 20 extensions .I need to
record lines 1, 2, 3, and 4 only. What do I do?
A: You need a TA-100 and a
recorder with VOX for EACH line.
Q: On
my desk, I have a phone with 6 lines. I want to record ALL my
calls from this phone, no matter what line I am using. How?
A: Use a TC-10 and a VOX
recorder.
Q: I
only want to record only certain important phone calls. I dont
want to record each and every call automatically. How can I
manually start the recorder?
A: If the recorder is on
your desk and you are using a TA-100 or a TC-10 in conjunction
with a VOX recorder, you can turn the VOX off and push the record
button whenever you wish to record a call.
IMPORTANT NOTICEfghi
Under Federal law, you may record a phone conversation if you
are one of the parties to the conversation, or where one party
has given prior consent to recording.
State laws may require 2-party consent. (See
page showing which States require it.)
Surreptitious recording of telephone conversations is unlawful
everywhere. If you are in doubt as to how Federal and State laws
may apply to your particular situation, we suggest you consult
with your attorney.
CHAPTER 4: Operation and troubleshooting of the voice activation feature (VOX)
It is IMPORTANT that you realize that the voice activation is OFF when its knob has been turned fully COUNTERCLOCKWISE, past the click. When the VOX is off, the recorder will run continuously in both the "record" and the "playback" mode. When you put the recorder in the "record" mode and you turn the VOX on (by turning the knob CLOCKWISE past the click) the recorder will START and record when a voice (or other sound) is present. The recorder will STOP approximately 5 seconds after the voice (or sound) stops.
TURN THE VOX OFF WHEN YOU WANT TO PLAY BACK A TAPE.
The SENSITIVITY of the VOX (how MUCH sound is needed to start
the recorder) is determined by the setting of the VOX control.
The VOX is at MAXIMUM sensitivity when the knob is turned JUST
past the click. As you turn the knob further CLOCWISE, the
sensitivity will become LESS. When the knob is fully CLOCKWISE
the VOX sensitivity is at its MINIMUM. If you set the sensitivity
TOO high, the recorder may very well start on background noises (when
you record a meeting, for example) or it may start on background
hum or noise from an external source (when you record from a
telephone, scanner or receiver).
It is generally advisable to use the ALC record mode when
using the VOX
What to do when it seems that the VOX is not operating properly: 01
BEFORE you decide that the VOX is not working properly (does
not start, does not stop, etc.) when recording from an outside
source of audio, such as a scanner or receiver, or TA-100
telephone interface, please perform the following simple test:
1. Unplug the cable from your external audio source to the
recorder.
2. Put the recorder into the "record" mode, with the
ALC "on"
3. Speak into the microphone, and visually verify that the tape
is running and the red LED
is flashing.
4. WHILE SPEAKING, turn the VOX knob FULLY clockwise.
5. After 6 seconds, the tape will stop.
6. Speak into the microphone, and WHILE SPEAKING, turn the VOX
knob slowly COUNTERCLOCKWISE. You will see the tape start.
If everything works as described above, the VOX is OK.
The problem is therefore with the outside audio source, such as the receiver or scanner. Excessive hum or background noise from a scanner may prevent the VOX from turning off. You can easily verify this by playing back the tape. If there is a lot of background noise or hum on the tape, it may prevent the VOX from turning off. See chapter 2 for information on how to solve "hum" problems.
Another typical problem is:
My recorder will do NOTHING! When I press the "play"
button, the tape will not move.
When I press the "cue" and "review" buttons,
NOTHING happens, NOTHING moves
The answer is
The VOX MUST
be OFF for playback