Brandywine TDU-310 User manual

1
MANUAL P/N 900000019 REV G
User Guide
Multi-Channel Time Distribution Unit
Model TDU-310
P/N 018000001
Revision G
November 2018
Brandywine Communications
1153 Warner Avenue
Tustin, CA 92780
[phone]
[phone]
http://www.brandywinecomm.com

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Revision History
REVISION
DATE
COMMENTS
NC
12-08-03
Initial release of TDU-310 user guide.
A
12-06-04
Revision of entire TDU-310 user guide.
B
02-21-06
Customer’s comments incorporated into TDU-310 user guide.
C
02-01-08
Revised input and output configuration tables to reflect correct
factory jumper settings. Outline drawing updated to Rev B,
showing rounded corners on front panel.
D
01-21-2011
Clarified Calibration requirements
E
12-12-2012
Corrected connector voltages
F
07-05-2016
Corrected pin errors in 1.3.1 Inputs.
G
10-30-2018
Corrected timecode inputs, updated outline drawing to Rev D

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Safety Warnings
WARNING:
To prevent fire and electric shock, do not expose this unit to rain or
moisture.
WARNING:
The lightning flash with an arrowhead inside of an equilateral triangle is
intended to alert the user to the presence of un-insulated “dangerous
voltage” within the product’s enclosure. The “dangerous voltage” may be
of sufficient magnitude to constitute as a risk of electrical shock to people.
CAUTION:
The exclamation point inside of an equilateral triangle is intended to alert
the user to the presence of important operation and maintenance
instructions in the user guide.

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Table of Contents
1Introduction .................................................................................................... 5
1.1 Scope of Section .................................................................................... 5
1.2 Purpose of Equipment ............................................................................ 5
1.3 Specification ........................................................................................... 6
1.3.1 Inputs............................................................................................... 6
1.3.2 Outputs............................................................................................ 7
1.4 Controls and Indicators........................................................................... 8
2Installation...................................................................................................... 9
2.1 Scope of Section .................................................................................... 9
2.2 Unpacking and Inspection ...................................................................... 9
2.3 TDU-310 Configuration........................................................................... 9
2.3.1 Internal Jumper Settings ............................................................... 10
2.3.2 Output Jumper Settings................................................................. 11
2.4 Installation and Testing......................................................................... 12
3Operating Instructions.................................................................................. 13
3.1 Scope of Section .................................................................................. 13
3.2 Operation.............................................................................................. 13
3.2.1 Automatic Selection of Signal Sources ......................................... 13
3.2.2 Manual Selection of Reference A as Signal Source...................... 13
3.2.3 Manual Selection of Reference B as Signal Source...................... 13
4Link Locations and Pin Assignments ........................................................... 14
4.1 Scope of Section .................................................................................. 14
4.2 Link Locations....................................................................................... 14
4.3 Pin Assignments................................................................................... 14
4.3.1 Input Connectors ........................................................................... 14
4.3.2 Output Connectors ........................................................................ 14
4.3.3 Pin Assignments............................................................................ 15
5Maintenance and Calibration ....................................................................... 16
5.1 Scope of Section .................................................................................. 16
5.2 Routine Maintenance............................................................................ 16
5.3 Fault Finding......................................................................................... 16
5.4 Calibration............................................................................................. 16
6Drawings...................................................................................................... 17
6.1 Front Panel...................................................................................................................18
6.2 Rear Panel ...................................................................................................................18
6.3 Outline Drawing............................................................................................................19
6.4 Link Location ................................................................................................................ 20

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1 Introduction
1.1 Scope of Section
Section 1 provides a general description of the Brandywine Communications
Multi-Channel Time Distribution Unit (Model TDU-310). The introduction is
divided into three parts, purpose of the equipment, physical and electrical
specification, and an identification of the external controls, indicators, and
connectors.
1.2 Purpose of Equipment
The TDU-310 accepts various inputs from external timing units, chooses
between these input sources, and buffers the outputs of the selected source to
the user. The selection is essentially a 2 x 1 switch for all inputs. The input
chosen is user-programmed to be either user selectable or automatic. Primary to
secondary switching is based on amplitude faults of the 1 PPS input, Time Code
1 input (HaveQuick), Time Code 2 input (50 bit/second BCD), and the state
change of the Time Fault Discrete input.
The TDU-310 is designed to provide dual redundant timing signals for use in
telecommunications, power utilities, and military communication applications.

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1.3 Specification
1.3.1 Inputs
INPUT
SIGNAL
LEVEL
IMPEDANCE
CONNECTOR
Reference A
Inputs
1 PPS
0 V to +5 VDC or
0 VDC to 10 VDC
and positive on time
50 ohms
J1
Time Code 1
(HaveQuick)
0 V to +5 VDC
50 ohms
J3
Time Code 2
(BCD)
RS232 or RS422
compatible
DS14C232 and
DS8922
J5 Pin 4 (GND)
J5 Pin 8 (–)
J5 Pin 9 (+)
Time Fault
Discrete
5 V logic and fault
active low
74 ACT logic
J5 Pin 1
Isolation
All signal inputs are
optically isolated
Reference B
Inputs
1 PPS
0 V to +5 VDC or
0 VDC to 10 VDC
and positive on time
50 ohms
J2
Time Code 1
(HaveQuick)
0 V to +5 VDC
50 ohms
J4
Time Code 2
(BCD)
RS232 or RS422
compatible
DS14C232 and
DS8922
J6 Pin 4 (GND)
J6 Pin 8 (+)
J6 Pin 9 (-)
Time Fault
Discrete
5 V logic and fault
active low
74 ACT logic
J6 Pin 1
Isolation
All signal inputs are
optically isolated
Power
115/230 VAC
selectable, 47Hz to
70 Hz, and 10 W
IEC-320
receptacle
Size
Width
Standard 19” rack
mounting
Height
1U (1.72”)
Depth
6.15” excluding the
connectors
Weight
Approximately 10 lbs
Table 1 Inputs

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1.3.2 Outputs
OUTPUT
SIGNAL
LEVEL
IMPEDANCE
RISE
TIME
QTY
CONNECTOR
GROUP 1
PULSE
TIME CODE 1 (HQ)
TIME CODE 2 (BCD)
LINK SELECTABLE
0-10 V0-pk
LOW Z OR 50 OHMS
LINK SELECTABLE
PER OUTPUT
< 10 ns
5
J9, J11, J13, J15,
AND J17
GROUP 2
PULSE
TIME CODE 1 (HQ)
TIME CODE 2 (BCD)
LINK SELECTABLE
0-10 V0-pk
LOW Z OR 50 OHMS
LINK SELECTABLE
PER OUTPUT
< 10 ns
5
J19, J21, J23, J25,
AND J27
GROUP 3
PULSE
TIME CODE 1 (HQ)
TIME CODE 2 (BCD)
LINK SELECTABLE
0-05 V0-pk
LOW Z OR 50 OHMS
LINK SELECTABLE
PER OUTPUT
< 10 ns
5
J10, J12, J14, J16,
AND J18
GROUP 4
PULSE
TIME CODE 1 (HQ)
TIME CODE 2 (BCD)
LINK SELECTABLE
0-05 V0-pk
LOW Z OR 50 OHMS
LINK SELECTABLE
PER OUTPUT
< 10 ns
5
J20, J22, J24, J26,
AND J28
GROUP 5
AND
GROUP 6
PULSE
TIME CODE 1 (HQ)
TIME CODE 2 (BCD)
LINK SELECTABLE
PER EIA
RS232
PER EIA RS232
4.5 V/µs
PROP.
DELAY OF
1µs
10
J7
SIGNAL
GROUND
11
13
15
17
28
30
32
44
46
48
12
14
16
-
29
31
33
45
47
49
GROUP 7
AND
GROUP 8
PULSE
TIME CODE 1 (HQ)
TIME CODE 2 (BCD)
LINK SELECTABLE
PER EIA
RS422
PER EIA RS422
< 20 ns
10
J7
+
–
GROUND
1
2
3
4
5
6
7
8
9
10
18
19
20
21
22
23
24
25
26
27
34
35
36
37
38
39
40
41
42
43
1 PPS
PULSE WIDTH
20 µs REGARDLESS OF THE 1 PPS INPUT PULSE WIDTH
Table 2 Outputs

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1.4 Controls and Indicators
All operating controls excluding the power control are located on the front panel
of the TDU-310.
CONTROL
FUNCTION
Reference Select
Manual selection of the input source. Either Reference A,
Reference B, or automatic selection.
Power
Located on the rear panel of the unit.
Table 3 Controls
INDICATOR
DESCRIPTION
A Online
Indicator shows Reference A is the source of the outputs.
A Available
Indicator shows all Reference A signals are present.
B Online
Indicator shows Reference B is the source of the outputs.
B Available
Indicator shows all Reference B signals are present.
Auto
Indicator shows Reference Select is in automatic mode.
Power
Indicator shows power is available.
Table 4 Indicators

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2 Installation
2.1 Scope of Section
Section 2 provides installation instructions for the Brandywine Communications
Multi-Channel Time Distribution Unit (Model TDU-310).
2.2 Unpacking and Inspection
Remove the TDU-310 from its shipping container. Visually inspect the unit for
any damage and loose hardware. If any shipping damage is observed,
immediately notify the carrier and Brandywine Communications.
The TDU-310 occupies 1U (1.75 inches) of vertical cabinet space.
2.3 TDU-310 Configuration
Refer to Figure 6.4 for the locations of the push on jumper links. The TDU-310 is
extremely flexible with respect to the input and output configurations. Setup is
done using the push on jumpers on the main printed circuit board assembly.
WARNING:
Remove the AC power cord before removing the top cover of the TDU-310.
To remove the top cover of the TDU-310, remove the four side screws and the
center front panel screw. This will expose the main printed circuit board
assembly. Install the jumper links as required. Note that the 5/10 V pulse
outputs typically used for the 1 PPS may be configured to be either a 50 ohm
source impedance or a low source impedance. The 50 ohm source impedance
is recommended when driving a 50 ohm terminated coaxial cable for correct
impedance matching to prevent pulse reflections. The load will see a 5 V pulse
in this configuration. When all link installations are correct, replace the top cover
using the five screws. Please note that the factory default settings are
shown in BOLD font.

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2.3.1 Internal Jumper Settings
Jumper
Connector
Printed Circuit Card Jumper
Function
Top or
Left
Bottom
or Right
LK1
NA
No 1PPS Channel A
Std
No 1PPS
LK2
NA
No 1PPS Channel B
Std
No 1PPS
LK3
NA
No Have Quick Channel A
Std
No HQ
LK4
NA
No Have Quick Channel B
Std
No HQ
LK5
NA
RS422 or RS232
RS232
RS422
LK6
NA
No BCD Channel A
Std
No BCD
LK7
NA
RS422 or RS232
RS232
RS422
LK8
NA
No BCD Channel B
Std
No BCD
LK9
NA
No /TFD Channel A
/TFD
No /TFD
LK10
NA
No /TFD Channel B
/TFD
No /TFD
LK11
J9, J11, J13, J15, J17
Ch 1-5: 0-10V 1PPS or HQ
HQ
1PPS
LK12
J9, J11, J13, J15, J17
Ch 1-5: 0-10V BCD
BCD
LK13
J19, J21, J23, J25, J27
Ch 6-10: 0-10V 1PPS or HQ
HQ
1PPS
LK14
J19, J21, J23, J25, J27
Ch 6-10: 0-10V BCD
BCD
LK15
J10, J12, J14, J16, J18
Ch 1-5: 0-5V 1PPS or HQ
HQ
1PPS
LK16
J10, J12, J14, J16, J18
Ch 1-5: 0-5V BCD
BCD
LK17
J20, J22, J24, J26, J28
Ch 6-10: 0-5V 1PPS or HQ
HQ
1PPS
LK18
J20, J22, J24, J26, J28
Ch 6-10: 0-5V BCD
BCD
LK19
J7
Ch 1-5: RS232 1PPS or HQ
HQ
1PPS
LK20
J7
Ch 1-5: RS232 BCD
BCD
LK21
J7
Ch 6-10: RS232 1PPS or HQ
HQ
1PPS
LK22
J7
Ch 6-10: RS232 BCD
BCD
LK23
J7
Ch 1-5: RS422 1PPS or HQ
HQ
1PPS
LK24
J7
Ch 1-5: RS422 BCD
BCD
LK25
J7
Ch 6-10: RS422 1PPS or HQ
HQ
1PPS
LK26
J7
Ch 6-10: RS422 BCD
BCD
Table 5 Internal Jumper Settings

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2.3.2 Output Jumper Settings
Link
Connector
Output 1 Level
(Typical)
Impedance
Link in/out
Link in/out
LK27
J9
10V/5V
LoZ/50Ω
LK28
J11
10V/5V
LoZ/50Ω
LK29
J13
10V/5V
LoZ/50Ω
LK30
J15
10V/5V
LoZ/50Ω
LK31
J17
10V/5V
LoZ/50Ω
LK32
J19
10V/5V
LoZ/50Ω
LK33
J21
10V/5V
LoZ/50Ω
LK34
J23
10V/5V
LoZ/50Ω
LK35
J25
10V/5V
LoZ/50Ω
LK36
J27
10V/5V
LoZ/50Ω
LK38
J10
5V/2.5V
LoZ/50Ω
LK39
J12
5V/2.5V
LoZ/50Ω
LK40
J14
5V/2.5V
LoZ/50Ω
LK41
J16
5V/2.5V
LoZ/50Ω
LK42
J18
5V/2.5V
LoZ/50Ω
LK43
J20
5V/2.5V
LoZ/50Ω
LK44
J22
5V/2.5V
LoZ/50Ω
LK45
J24
5V/2.5V
LoZ/50Ω
LK46
J26
5V/2.5V
LoZ/50Ω
LK47
J28
5V/2.5V
LoZ/50Ω
Table 6 Output Settings

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2.4 Installation and Testing
Install the TDU-310 in the desired cabinet location. Fabricate the input/output
cables and connect them to the TDU-310.
CAUTION:
Verify that the input voltage range selection on the rear panel of the unit is
set to match the local line AC voltage (115/230 VAC).
If the input voltage range selection is incorrect, lift the red cover on the power
entry module and remove the fuse holder. Rotate the fuse holder 180 degrees
and reinstall the fuse holder so that the correct line voltage is shown through the
rear window. Connect the AC power source to the TDU-310. Apply power to the
unit by switching on the power switch located on the rear panel of the unit.

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3 Operating Instructions
3.1 Scope of Section
Section 3 provides operating instructions for the Multi-Channel Time Distribution
Unit (Model TDU-310).
3.2 Operation
To operate the unit, apply power to the unit and the Power indicator should
illuminate.
3.2.1 Automatic Selection of Signal Sources
Set the ‘Reference Select’ switch to ‘Auto’. The following LEDS should
illuminate:
•Reference A Available
•Reference B Available
•Auto
•Reference A Online
In this mode, Reference A is selected unless the TDU-310 detects a missing
signal on ANY of the three reference signal inputs (1 PPS, Time Code 1 (HQ),
and Time Code 2 (BCD)) OR the Time Fault Discrete line is pulled low. If any of
these conditions is met, the TDU-310 will switch ALL outputs to be driven from
the Reference B input. If both Reference A AND Reference B are faulty, the
outputs will be switched to Reference A.
3.2.2 Manual Selection of Reference A as Signal Source
Set the ‘Reference Select’ switch to ‘A’. The following LEDS should illuminate:
•Reference A Available
•Reference B Available
•Reference A Online
3.2.3 Manual Selection of Reference B as Signal Source
Set the ‘Reference Select’ switch to ‘B’. The following LEDS should illuminate:
•Reference A Available
•Reference B Available
•Reference B Online

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4 Link Locations and Pin Assignments
4.1 Scope of Section
Section 4 provides the link locations and the input/output pin assignments for the
TDU-310.
4.2 Link Locations
Refer to Figure 6.4 for the locations of the push on jumper links.
4.3 Pin Assignments
4.3.1 Input Connectors
CONNECTOR
SIGNAL
CONNECTOR TYPE
J1
Reference A 1 PPS In
BNC
J2
Reference B 1 PPS In
BNC
J3
Reference A TC1 (HaveQuick)
BNC
J4
Reference B TC1 (HaveQuick)
BNC
J5
Reference A TC2 (BCD)
Multi-Pin
Reference A Time Fault Discrete
Multi-Pin
J6
Reference B TC2 (BCD)
Multi-Pin
Reference B Time Fault Discrete
Multi-Pin
Table 7 Input Connectors
4.3.2 Output Connectors
CONNECTOR
SIGNAL
CONNECTOR TYPE
J9 – J28
5/10 V Pulse and Logic Level
BNC
J7
RS232 and RS422
Multi-Pin
Table 8 Output Connectors

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4.3.3 Pin Assignments
CONNECTOR
REFERENCE
CONNECTOR
TYPE
CONNECTOR
PIN
SIGNAL
J5
DB-9 MALE
1
REFERENCE A TIME FAULT DISCRETE
2
GROUND
3
N/C
4
GROUND
5
TIME CODE 2 INPUT RS232
6
N/C
7
N/C
8
TIME CODE 2 INPUT RS422 (–)
9
TIME CODE 2 INPUT RS422 (+)
J6
DB-9 MALE
1
REFERENCE B TIME FAULT DISCRETE
2
GROUND
3
N/C
4
GROUND
5
TIME CODE 2 INPUT RS232
6
N/C
7
N/C
8
TIME CODE 2 INPUT RS422 (+)
9
TIME CODE 2 INPUT RS422 (–)
J7
DB-50 FEMALE
1
RS422 01 +
2
RS422 02 +
3
RS422 03 +
4
RS422 04 +
5
RS422 05 +
6
RS422 06 +
7
RS422 07 +
8
RS422 08 +
9
RS422 09 +
10
RS422 10 +
11
RS232 1
12
GROUND
13
RS232 2
14
GROUND
15
RS232 3
16
GROUND
17
RS232 4
18
RS422 01 -
19
RS422 02 -
20
RS422 03 -
21
RS422 04 -
22
RS422 05 -
23
RS422 06 -
24
RS422 07 -
25
RS422 08 -
26
RS422 09 -
27
RS422 10 -
28
RS232 5
29
GROUND
30
RS232 6
31
GROUND
32
RS232 7
33
GROUND
34
GROUND
35
GROUND
36
GROUND
37
GROUND
38
GROUND
39
GROUND
40
GROUND
41
GROUND
42
GROUND
43
GROUND
44
RS232 8
45
GROUND
46
RS232 9
47
GROUND
48
RS232 10
49
GROUND
50
N/C
Table 9 Pin Assignments

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5 Maintenance and Calibration
5.1 Scope of Section
Section 5 describes the recommended maintenance checks for the TDU-310 and
outlines a general approach to fault finding and repair.
5.2 Routine Maintenance
During normal operation the TDU-310 functions automatically and does not
require continuous manual intervention. Preventative maintenance can therefore
be restricted to a regular inspection of the status indicators.
WARNING:
Before removing the TDU-310 cover make sure that the power cord has
been detached from the rear panel of the unit.
5.3 Fault Finding
CAUTION:
In case of equipment malfunction or failure, Brandywine Communications
strongly recommends that the TDU-310 be returned to the factory for
repair. If this is not practical, fault finding and repair must only be
undertaken by a qualified test engineer. Brandywine Communications will
not accept any liability for injury or damage caused during fault finding and
repair by the user.
5.4 Calibration
The Model TDU310 has no calibration requirements.

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6 Drawings
FIGURE
DESCRIPTION
6.1
TDU-310 Front Panel
6.2
TDU-310 Rear Panel
6.3
TDU-310 Mechanical Outline
6.4
TDU-310 Link Location
Table 10 TDU-310 Drawings

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Front Panel
Rear Panel

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Figure 6.3 Outline Drawing

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Figure 6.4 - Link Locations
Note: “Std.” labels of LK1 to LK4 of 003000285 RevD (or older) were opposite than they’re shown.