Henry Engineering DigiStor II User Manual

HENRY ENGINEERING

503 Key Vista Drive
Sierra Madre, CA 91024
Tel: [phone]
Fax: [phone]

1.0 DESCRIPTION:

DigiStor II is a multi-message digital audio recorder. It can store up to 8 minutes (16 mins. optional) of monaural
audio with a bandwidth of 6.5 kHz. DigiStor II's multiple modes of use make it ideal for numerous applications in
broadcasting, telecommunications, and commercial sound: network news delay, station or translator ID and spot
insert, message-on-hold, news & actuality lines, call-in telephone information, museum exhibits & displays, sound
effects, announcements, etc. DigiStor II can store up to 8 messages which can be played in any order. Multiple
playback modes support one-time or repeat play, plus automatic sequencing and message "stacking". Messages
can be different lengths, and can be selectively recorded (or changed) without having to re-record other messages.
Messages are stored in non-volatile flash memory and are retained even if power is off. (No backup battery
needed.) Recording and playback is via local or remote control. DigiStor II can record from either a mic or line
level source. Line input and output levels are adjustable. An "eom" relay pulse is automatically generated at the
end of message playback. The included telephone coupler allows DigiStor II to be connected to a phone line for
auto-answer message playback. A special "SR" version adds: "Secondary Cue" relay output, 16 minute storage
time, RS-232 control of Record and Play functions, and front-mounted controls.

2.0 INSTALLATION: DigiStor II can be wall or desk mounted. For desk mounting, install the rubber feet included.

2.1 DC POWER: Connect the included power supply via the POWER terminals. Observe polarity.

2.2 AUDIO INPUTS: DigiStor II can record from either a mic or line level source. To record from a mic, use the

1/8" MIC input jack. This input is unbalanced, and will accept any LO-Z mic signal. To record from a line source
(tape deck, audio mixer, editor) use the RCA LINE input jack. This input is unbalanced, and will accept a line level
signal between about -15 and +4 dBv. The input impedance is 10K ohms; termination is not required. NOTE: The
MIC and LINE inputs cannot be used simultaneously. Use either the MIC OR LINE input, but not both at the same
time.

2.3 AUDIO OUTPUTS: DigiStor II provides two audio outputs: one is at -10 dBm, the other is +4 dBm. Select the
output most appropriate for the equipment being driven. The -10 dBm output is via the RCA jack. This output is
balanced and transformer isolated, and will drive a 600 ohm load. It CAN be ground-referenced if necessary.
The +4 dBm output is via the output terminals labeled SPKR. This is an ACTIVE balanced (transformerless)
output. It can drive any load, including a loudspeaker, with a load impedance of 8 ohms or higher. Because this
output is electronically balanced, DO NOT connect either output terminal to ground. DO NOT reference the load to
ground. It is not necessary to terminate either output.

3.0 DESCRIPTION OF CONTROLS AND LEDs: DigiStor II uses top-mounted pushbuttons for local recording and
playback of messages and to indicate system status. They function as follows:
SWITCHES
RECORD SETUP Push to enter/exit the Record Setup mode
START/STOP Push to start or stop Play or Record function.
SELECT Push to select the message to be played or recorded.
LEDs
POWER ON=Power on, system OK. FLASH=memory error. See Sec. 6.0.
OVERDRIVE ON=Audio input level too high. (Turn Input Level CCW)
AUDIO SENSE ON=Audio input signal present. OFF=No audio detected.
RECORD FLASH=Ready to record; ON=Recording in process
MESSAGE #s Indicates which message are active or selected, see text below:
The MESSAGE # LEDs indicate the status of each message. When the system is idle, all LEDs are OFF. Each
time the SELECT button is pressed (to select a message for playback), it cycles through active (recorded)
messages, which are indicated with a FLASHING LED. When a message is playing, it's LED will be ON.

When the Record Setup mode is entered, each time the SELECT button is pressed it will show the status of each
Message #. Active (already recorded) messages will have their LEDs FLASH. Empty Message # LEDs will be ON.
During recording the Message # LED will be ON. When recording is stopped, the LED will go OFF.

4.0 OPERATION DigiStor II can be operated by either local or remote control.

4.1 LOCAL OPERATON: How to record and play messages using the pushbuttons on the unit.

4.1.1 RECORDING A MESSAGE (NOTE: The minimum message length is 2 seconds.)

1. Make necessary audio input and output connections to the system. Set OUTPUT LEVEL fully CW.

2. Push the RECORD SETUP button; Record LED will flash.* 3. Press the SELECT button to select the Message
# to be recorded. Message # LEDs will be ON if nothing has been recorded in that location, but will FLASH if there
is already a message recorded.

4. Feed audio into the DigiStor II while watching the AUDIO SENSE and OVERDRIVE LEDs. The AUDIO SENSE
LED should light to confirm audio is present. If the OVERDRIVE LED flashes, the input level it too high. Turn the
INPUT LEVEL control CCW until it goes out. (Audio signal will be heard through the OUTPUT jacks.)

5. Once audio levels have been set, begin recording by pressing the START/STOP button once. The RECORD
and MESSAGE # LEDs will remain ON during recording.

6. To stop recording, press the START/STOP button again. System will return to idle.
* Record Setup will time-out after 1 minute of inactivity.

4.1.2 PLAYING A MESSAGE: (NOTE: CONFIG switches do NOT affect play via pushbuttons on unit.)

1. Press the SELECT button to select Message # to play. SELECT button will only increment between valid
Message #s and the LEDs will flash.*

2. Press the START/STOP button to begin playback. Message # LED will stay ON during playback. 3. Press the
START/STOP button again to stop playback at any time.
* Playback message selection will time-out after 1 minute of inactivity.

4.2 REMOTE OPERATION: How to record and play messages via wired remote control.

4.2.1 REMOTE CONTROL WIRING : DigiStor II remote control connectors must be wired as follows:

There are 2 connectors used for remote control of DigiStor II. Connector #1 (P1) and Connector #2 (P2). P1 is a
12-position pluggable connector used for remote control of Message Play, Stop, and for access to the PLAY
RELAY contacts. P2 is a 3-position connector used for remote control of the Record function. All Play, Stop, and
Record functions are triggered with contact closures to the "COMMON" (ground) pin, P1-1. Pin-outs are detailed
below:

4.2.2 "NORMAL MODE" RECORDING VIA REMOTE CONTROL (CONFIG Switch #3 UP): To record a
message, first activate the RECORD SETUP mode by providing a maintained contact closure between P2-1
(Record) and P1-1 (Common). The RECORD LED will flash. Next, provide a maintained contact closure between
the Message # to be recorded and Common. For example, to record Message #5, provide a maintained closure
between P1-6 and P1-1. Recording will begin; the RECORD and MESSAGE # LEDs will remain ON during
recording. Observe the AUDIO SENSE and OVERDRIVE LEDs to confirm correct audio levels. To stop recording,
release the Message # closure; release the remote Record input closure to exit the recording mode.

4.2.3 "PRIORITY MODE" RECORDING VIA REMOTE CONTROL (CONFIG Switch #3 DOWN): If Priority mode
is selected, DigiStor II will immediately begin recording Message #1 as soon as the remote Record circuit (P2-1) is