DTS E376 Installation And Operation Manual
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DTS Timecode Preamplifier
Model E376
Installation and Operation Manual
October 25, 2001
(Manual P/N 9301E37600A)
www.dtsonline.com
DTS Europe Digital Theater Systems, Inc. DTS Japan
Digital Theater Systems (UK) Ltd. 5171 Clareton Drove AT Communications KK
Unit 5, Tavistock Industrial Estate Agoura Hills, CA 91301 USA 2-14-4 Shinonome, Koto-ku
Ruscombe Lane, Twyford Tel: (818) 706-3525 or (800) 959-4109 135-0062 Tokyo, Japan
Berkshire RG10 9NJ UK Fax: (818) 706-1868 Tel: +81(0)3 5564 7156
Tel: +44 1189 349199 Email: cinematech@dtsonline.com Fax: +81(0)3 3520 1022
Fax: +44 1189 349198
Email: dtsinfo@dtsonline.co.uk
Email: asano@dtsterch.com
(Liaison Office)
DTS Timecode Preamplifier DTS Model E376
DTS Timecode Preamplifier
Model E376
TABLE OF CONTENTS
Section
INTRODUCTION ………………………………………………………………………….. 2
DTS 16MM ………………………………………………………………………………… 2
SPECIFICATIONS ………………………………………………………………………… 2
FRONT PANEL ……………………………………………………………………………. 3
REAR PANEL …………………………………………………………………………….. 4
(Internal) CIRCUIT BOARD, E326 ……………………………………………………… 5
PHYSICAL DIMENSIONS ………………………………………………………………. 6
INSTALLATION PROCEDURE …………………………………………………………. 6
INSTALLATION DIAGRAMS …………………………………………………………… 7
SYSTEM TEST ……………………………………………………………………………. 12
OPERATION ………………………………………………………………………………. 13
TROUBLESHOOTING ……………………………………………………………………. 13
DTS TECHNICAL SUPPORT …………………………………………………………… 13
REPLACEMENT PARTS LIST ……………………………………………………..…… 14
APPENDIX A: BLINKING DTS TIMECODE READER LED ……..………………. 15
Page
TC2 Signal Routing …………………………………………………………………………….. 4
Internal Jumpers ………………………………………………………………………………... 5
Diagram of Checking DTS Timecode With an Oscilloscope …………...……………………… 17
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DTS Timecode Preamplifier DTS Model E376
INTRODUCTION
The E376 is an accessory to the DTS system and is designed to optimize the readability of DTS
timecode that is not recorded in the standard manner. Typically, DTS timecode is recorded with
a DTS exposure head and printed on either 35mm or 70mm film. These tracks are easily read
with the standard DTS timecode reader head (
TCRH
). However, when DTS timecode is
recorded on videotape or any other media, there is potential for readability problems such a loss
of low frequency or incorrect level. The E376 is able to optimize any DTS timecode source for
flawless playback in a DTS digital system when the use of a DTS timecode reader is impractical.
DTS 16MM
When using the DTS system with 16mm film, the standard optical sound track is not printed on
the film. Instead, DTS timecode is printed in the optical sound track area and read by the
projector’s standard optical head. Just like DTS 35mm film, the soundtrack is contained on DTS
CD-ROM
s and played on a DTS player. For DTS 16mm film, the E376 is standard equipment
and is designed to be a permanent install. The E376 allows you to change between standard
16mm optical and DTS digital playback.
Generally, the audio output of the projector is sent directly to the cinema processor for
distribution in the auditorium. The E376 is installed between the projector’s sound optics and
the DTS player. For DTS playback, the E376 is switched into the Active Mode. This mode
“conditions” the timecode from the 16mm optical sound head and routes it to the DTS player.
“Conditioning” of the timecode includes adding a low frequency boost, if needed, and ensuring
an output of 4-volts peak to peak. When the E376 is switched into the Bypass Mode, the
standard optical signal is routed directly to the cinema processor without any loading on the
audio line.
SPECIFICATIONS
J1 and J2 source inputs are typically from the projector’s sound head at either cell or line level.
There are dedicated connectors for up to two projectors (or sources). JP2 & JP3 jumpers on the
E326 board must be set for the input level (“
CELL IN
y Cell input is from 7mV to 200mV RMS.
y Line level input is from 240mV RMS to 7.74V RMS
” or “
LINE IN
”).
Power input is 5V DC and comes in at J4 when connected to the DTS digital player’s
TIMECODE connector(s). Pin-outs for the timecode cable is shown on D477 (page 14).
J1 and J2 signal outputs are typically connected to the cinema processor. When in “BYPASS”
the J1 & J2 source inputs are routed directly to this output. When “ACTIVE”, there is no output
at these connectors (to ensure that timecode signal is not heard in the auditorium).
Timecode signal output connects to the timecode input of the DTS player. When in “BYPASS”,
the TCRH input(s) is sent directly to this output. When “
ACTIVE
”, the conditioned timecode
signal from J1 & J2 is sent to the DTS player.
Physical Dimensions
y Height: 1.75” = one rack unit (
y Depth: 6” (
15.24cm
) y Weight: 1.70 Lbs. (
) y Width: 19” (
4.45cm
48.26cm
) rack mount
)
0.77kg
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DTS Timecode Preamplifier DTS Model E376
FRONT PANEL
TIMECODE Illuminates green when good timecode is detected.
SIGNAL SOURCE Illuminates yellow when timecode signal is detected and
1 - 2 displays which projector is delivering the signal.
LOW Push-button switch.
FREQUENCY y Press “IN” when a low frequency boost is required to read timecode
COMPENSATION y Press
“OUT
” when a boost is not needed to read good timecode
The use of this switch greatly depends on the frequency range of the
output signal from optical sound preamplifier (if used). If the signal is
rolled off below 200Hz, a low frequency boost is required for good
timecode to be read.
PREAMP “
(
s) “
L.E.D.
ACTIVE
BYPASS
” illuminates blue when the E376 preamplifier is active.
” illuminates green when the E376 preamplifier is bypassed.
PREAMP Push-button switch.
(switch) y Press in to select “
ACTIVE
”. Activates the E376 preamplifier and the
input signal(s) from J1 & J2 are “conditioned” and sent to the TC out
connector(s).
y Press out to select
“BYPASS”.
When in Bypass mode, the input signals
are connected directly to the J1 & J2 outputs.
Page 3 of 18
DTS Timecode Preamplifier DTS Model E376
REAR PANEL
CELL/LINE I/O
These in/out terminals provide a balanced input connector for DTS timecode
(J1 & J2) sources. They also provide loop through output to a cinema processor or mixing
board. JP2
level (“
CELL IN
y Cell input is from 7mV to 200mV RMS.
y Line level input is from 240mV RMS to 7.74V RMS
JP3 jumpers on the E326 board must be set for the correct input
&
” or “
LINE IN
”).
TCRH 1/1&2 This input is dedicated to DTS timecode reader heads, which are installed on
(J3)
.
35mm & 70mm film projectors. When two projectors are being used for changeovers, a “Y” cable must be used to feed both signals to this input. When the
E326 is in “
BYPASS
TC1/1&2 OUT.
”, this signal is routed directly to the DTS player via the
TC 1/1&2 OUT This output connects directly to a DTS player when using (1) a single projector
(J4) -or- (1&2) two projectors using a timecode “Y” cable. When two projectors
TCRH 2
(
change-over
pin 1 and Proj2 TC IN must be on pin 2 of the player’s “
This input is dedicated to DTS timecode at a second projector when not using a
) are being used with DTS-6/-6D players, Proj1 TC IN must be on
TIMECODE
” connector.
(J5) “Y” cable. It allows the timecode signal from the reader to pass through the
E376 to the DTS-6AD when the “
PREAMP
” switch is set to “
BYPASS
”.
TC2 OUT This output is dedicated to DTS timecode at a second projector and connects
(J6) directly to a DTS-6AD “
own dedicated timecode reader and cable – the DTS “Y” cable cannot be used
The DTS-6AD needs to see TC for Proj2 on pin 1 of “
and TC for Proj1 on pin 1 of “
PROJ 2 TC
” input. It is used when each projector has it’s
” connector
PROJ 1 TC
PROJ 2 TC
” connector.
“TC2 SIGNAL ROUNTING” jumper selections
“TC OUT TO”
“J4” Routes Proj2 source signal to DTS-6/-6D player “
“J6” Routes Proj2 source signal to DTS-6AD “
PROJ 2 TC
TIMECODE
” input on pin 1
” input on pin 2
“TCRH IN FROM”
“J3” Takes TCRH #2 input signal at J3 (
“J5” Takes TCRH #2 input at J5 (
from single timecode cable
from timecode “Y” cable
) on pin 2 (
) on pin 1 (
for DTS-6/-6D
for DTS-6AD)
)
.
Page 4 of 18
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