Controls and Indicators
11
Parallel Port: DB-37 Connector
Be sure to configure the
AM-4 Digital Audio
Machine for contact
closures or voltage
inputs before
connecting any wires.
Note: The Fault output
relay will be active
(closed) immediately
after power-up
indicating that power
was lost. The first valid
command causes the
relay to open.
This connector provides all of the signals needed to interface to the AM-4 Digital
Audio Machine. Files numbered 1 through 15 of the AM-4 Digital Audio Machine
may be played, paused or stopped using eight parallel inputs located on the rear
connector. These inputs may be either contact closures such as momentary buttons,
or voltage inputs from a controller such as a PLC. The DIP switch located on the side
of the unit next to the connector selects between the two input types. More
information on these inputs may be found in the section entitled Parallel Control.
Two dry-contact relay outputs provide Fault and Playing status (closed when active).
A current-limited (100mA max.) 5VDC output can be used to light external LED
indicators, and an extra power supply input exists so that the 37-pin connector can be
used to supply power instead of the barrel jack. Any of the ground connections may
be used for the return.
The pinout of the Control Connector is shown below:
Pin
Function
Pin
Function
1
Mute
20
Ground
2
Pause (see Note 1)
21
Ground
3
Stop
22
Ground
4
Loop (see Note 2)
23
Ground
5
File Select 1
24
Ground
6
File Select 2
25
Ground
7
File Select 4
26
Ground
8
File Select 8
27
Ground
9
Playing Output (contact 1)
28
Playing Output (contact 2)
10
Fault Output (contact 1)
29
Fault Output (contact 2)
11
Mute (voltage input)
30
5 VDC output, 100 mA max.
12
Pause (voltage input)
31
Ground
13
Stop (voltage input)
32
Ground
14
Loop (voltage input)
33
Ground
15
File Select 1 (voltage input)
34
Ground
16
File Select 2 (voltage input)
35
Ground
17
File Select 4 (voltage input)
36
Ground
18
File Select 8 (voltage input)
37
Ground
19
Extra Power Supply Input
Note 1
: If the Pause input is activated on power-up the Play Next mode is activated
(Please refer to Parallel Control chapter for details).
Note 2
: If the Loop input is activated on power-up the Playlist & Volume
Increment/Decrement mode is activated (Please refer to Parallel Control Chapter for
details).
Содержание AM-4
Страница 1: ...AM 4 Digital Audio Machine Hardware and Software Reference Manual ...
Страница 2: ...ii Welcome PLACE HOLDER FOR THE BACK OF THE FRONT COVER DO NOT PRINT ...
Страница 3: ...Welcome iii Digital Audio Machine User s Guide Alcorn McBride Inc ...
Страница 6: ......
Страница 10: ...4 Quick Start Guide ...
Страница 32: ...26 Controlling the AM 4 ...
Страница 58: ...52 GPS Operation GPS Operation ...
Страница 70: ...64 Troubleshooting Guide FAQ ...
Страница 71: ...Mechanical Information 65 Mechanical Information Mechanical Dimensions Surface Mounting ...
Страница 74: ...68 Mechanical Information Rack Mount Kit 2 Unit Part Number 302 100704 ...