Nautel FM10011 User manual

Field
Modification
FM10011
Vector-LP:
Adding Standby
Side
Issue 1.0 ...........................08 October 2010
Nautel Limited
10089 Peggy's Cove Road,
Hackett's Cove, NS, Canada B3Z 3J4
T.877 6 nautel (628835) or +1.902.823.2233
F.+1.902.823.3183 [e-mail]
U.S. customers please contact:
Nautel Inc.
201 Target Industrial Circle, Bangor ME 04401
T.877 6 nautel (628835) or +1.207.947.8200
F.+1.207.947.3693 [email protected]
e-mail: [email protected]
www.nautel.com
©Copyright 2010 NAUTEL. All rights reserved.

Vector-LP – Adding Standby Side Page 1
FM10011 Issue 1.0
FM10011 – Vector-LP: Adding Standby Side
FIELD MODIFICATION
1 INTRODUCTION
This document provides instructions for customers to modify the subject equipment in the
field.
1.1 Reason for Modification
Installing the standby side transmitter allows for increased on air time and increased system
availability.
1.2 Equipment Affected
This modification applies to all single side Vector-LP customers who want to add the standby
side option.
1.3 Responsibility for Implementation of Procedure
This modification is written for qualified transmitter maintenance personnel.
1.4 Scheduling
Implement this modification at the convenience of station maintenance personnel. The
transmitter must be turned off during this procedure.
1.5 Manpower Requirements
Implementing this modification will require approximately three (3) hours.
1.5 Special Tools/Test Equipment
Standard and metric hand tools (screwdrivers, wrenches, etc.) are required.
1.6 Materials Required
The parts required for this modification are provided in the field modification kit (see Table 1).
Table 1: Parts List – Vector-LP Standby Side Kit
Nautel Part # 205-1026** (part number suffix may vary, depending on parts provided)
Item Qty Part #, description
2 1 FM10011, Documentation
3 24 HMSP09F, M3, Screw, Pan, Philips, split and flat
4 6 HMSP21F, M4, Screw, Pan, Philips, split and flat
5 1 UA90, SATA cable (contained only in DGPS kit)
A8 1 NAPE70*, RF Synthesizer PWB (contained only in NDB kit)
A9 1 NAPM11*, Interphase PDM Driver PWB
A10 1 NAPE76*/**, Exciter Monitor/Generator PWB
A13 1 NAP35*/**, RF Power Module
U3 1 UG50, Power Supply, 85-264 V ac, 80 W
NOTE
The part number of items shown in Table 1, specifically the nomenclature PWBs/assemblies
(e.g., NAPE70*, NAP35*/**, etc.) may vary depending on specific requirements for that
application (NDB or DGPS).

Page 2 Vector-LP – Adding Standby Side
Issue 1.0 FM10011
1.8 Identification of Modified Assemblies
Identifying modified assemblies will inform future maintainers of the current configuration.
Mark the Vector-LP with “FM10011” using indelible ink to show it has been modified.
1.9 Publications Affected
No changes required.
2 INSTALLING THE STANDBY SIDE OPTION
(a) Turn off the NDB transmitter. Switch off its ac power source (and dc power source, if
applicable).
(b) Ensure the NDB transmitter is “locked out” (e.g., place a lock on the transmitter’s ac
mains and/or dc supply) to ensure it cannot be turned on.
(c) If the transmitter is installed in a Nautel supplied rack, ensure the shipping hardware has
been removed (as per transmitter installation instructions). Extend the transmitter out of
the cabinet on its slides.
2.1 Installing the Standby RF Power Module (A13)
(a) See Figure 1. Remove RF power module B’s cover plate from the top of the transmitter,
noting it is secured using two (2) M4 securing screws. Retain hardware.
(b) See Figure 2. Locate 25-pin D-sub connector P19 noting it is tyrapped to a cableform on
the left-hand side of the transmitter, below the cover plate removed in step (a). Carefully
cut the tyrap(s) that secure P19 to the cableform.
(c) Obtain the RF power module (A13, Nautel Part # NAP35*/**) from the Vector-LP standby
side kit (Nautel Part # 205-1026**).
NOTE
Ensure proper orientation of the RF power module before installing it in the transmitter. The
mating connector at the bottom of the module should face the rear of the transmitter.
(d) Carefully insert the RF power module in the slot in the top of the transmitter. Align the
module with the guides on each side of the transmitter. Slide the module down into the
transmitter and push it firmly into place.
(e) Connect P19 to A1J7 of the RF power module noting A1J7 is located near the top of the RF
power module. Engage the spring latches on either side of the connector.
(f) See Figure 1. Replace the top cover for the RF power module and secure using five M4
screws - two (2) that were retained in step 2.1 (a), the other three (3) (Nautel Part #
HMPSP21F) from Vector-LP Standby side kit.
(g) See Figure 1.If it is desired to install the RF power module shipping hardware, secure the
bottom of the module with two (2) M4 screws (Nautel Part # HMPSP21F) from the
Vector-LP Standby side kit.

Vector-LP – Adding Standby Side Page 3
FM10011 Issue 1.0
Figure 1: RF power module B cover plate
Figure 2: Location of D-sub connector P19
TOP COVERS: Remove two M4
screws from top Power module B
cover. Reinstall using five sets of
this hardware after module installed
SHIPPING SCREWS: Remove two M4
screws from bottom for each RF power
module. NOTE: Shipping screws may have
been removed during installation. They are
not required after module replacement.
P19

Page 4 Vector-LP – Adding Standby Side
Issue 1.0 FM10011
2.2 Installing the Standby Ac-Dc Power Supply (U3)
(a) See Figure 3. Remove the transmitter’s rear cover, noting it is secured with 12 sets of M3
hardware. Retain hardware.
Figure 3: Rear View of Vector-LP transmitter
(b) See Figure 4. Locate connectors P4 and P6, noting they are tyrapped to a cableform in the
rear of the transmitter, behind the removed rear panel. Carefully cut the tyraps securing P4
and P6 to the cableform.
Figure 4: Ac-Dc Power Supply Installation
U10
(installed only
with optional dc)
U2 P4
U3
Mounting
P6

Vector-LP – Adding Standby Side Page 5
FM10011 Issue 1.0
(c) Obtain the standby ac-dc power supply (U3, Nautel Part # UG50 from the Vector-LP
standby side kit.
(d) Use four (4) M3 screws (Nautel Part # HMPSP09F) from the Vector-LP standby side kit to
secure the ac-dc power supply to the four pillars to the right of U2. Position U3 in the
same orientation as U2 (see Figure 4).
(e) Connect P4 to the multi-pin header on the top of U3.
(f) Connect P6 to the multi-pin header on the bottom of U3.
(g) Secure the rear cover removed in step 2.2 (a) using retained hardware.
2.3 Installing the Standby Interphase PDM Driver PWB (A9)
(a) Open the transmitter’s front door by opening the door latch using a flat-head screw driver.
(b) Remove and retain the seven (7) M3 screws securing the interphase PDM driver cover.
See Figure 5.
Figure 5: Interphase PDM Driver PWB and Cover
(c) Obtain the interphase PDM driver PWB (A9, Nautel Part # NAPM11*) from the Vector-LP
standby side kit.
(d) Connect the interphase PDM driver PWB’s D-sub connector P1 to J10 of the exciter
interface PWB. See Figure 6.
(e) Secure the interphase PDM driver PWB to the four M3 pillars using four (4) M3 screws
(Nautel Part # HMPSP09F) from the Vector-LP standby side kit.
NOTE
Adjustments to the PWB may be required later in the procedure. Do not install the interphase
driver PWB cover until the end of this field modification.
Interphase
PDM driver
cover

Page 6 Vector-LP – Adding Standby Side
Issue 1.0 FM10011
Figure 6: Exciter front panel
A8
RF Synthesizer
PWB
A10
Exciter Monitor/
Generator PWB
A9
Interphase PDM
Driver PWB
Exciter
Interface
PWB

Vector-LP – Adding Standby Side Page 7
FM10011 Issue 1.0
2.4 Installing the Standby Exciter Monitor/Generator PWB (A10)
(a) Locate 25-pin D-sub connector P10, noting it is tyrapped to the cableform in the top right-
hand side of the transmitter (near A7). Carefully cut the tyrap(s) securing P10 to the
cableform. See Figure 6.
(b) Locate 20-pin ribbon connector W6P2, noting it is located near A7. Carefully cut the
tyrap(s) securing W6P2. See Figure 6.
(c) Obtain the exciter monitor/generator PWB (A10, Nautel Part # NAPE76*/**) from the
Vector-LP standby side kit.
(d) Verify that (or set) jumpers E1 through E3 are set to the same positions as the side A
exciter monitor/generator PWB (A7).
(e) Use four (4) M3 screws (Nautel Part # HMPSP09F) from the Vector-LP standby side kit,
secure the exciter monitor/generator PWB to the four M3 pillars located to the right of
side A exciter monitor/generator PWB. See Figure 6.
(f) Connect P10 to J1 of the exciter monitor/generator PWB.
(g) Connect W6P2 to J4 of the exciter monitor/generator PWB.
2.5 Installing the Standby RF Synthesizer PWB (A8) (NDB only)
(a) Obtain the RF synthesizer PWB (A8, Nautel Part # NAPE70*) from the Vector-LP
standby side kit.
(b) Connect the RF synthesizer PWB’s D-sub connector J1 to J6 of the exciter interface
PWB. See Figure 6.
(c) Secure the RF synthesizer PWB to the six (6) M3 pillars using six (6) M3 screws (Nautel
Part # HMPSP09F) from the Vector-LP standby side kit.
(d) Ensure that frequency select switches S1 through S5 are set to the desired carrier
frequency.
(e) Verify that (or set) jumpers E1 through E6 are set to the same positions as the side A RF
synthesizer PWB.
2.6 Installing the UA90 SATA Cable (DGPS only)
(a) Obtain the SATA cable (Nautel Part # UA90) from the Vector-LP standby side kit.
(b) Terminate one end of the SATA cable to J4 of the exciter interface (A2) and the other end
to J3 of the exciter monitor/generator PWB (A10) installed in paragraph 2.4.

Page 8 Vector-LP – Adding Standby Side
Issue 1.0 FM10011
3 Turning On the standby side
3.1 NDB Applications
(a) Remove any ac power “lock out” devices and apply ac power (and dc power source, if
applicable) to the transmitter.
(b) Terminate the transmitter’s RF output in a suitable 50 ohm dummy load.
(c) In the Changeover Control menu, set Monitor mode to BYPASS and Main side to A.
NOTE
When a replacement exciter monitor/generator PWB has been installed, all audio settings
must be re-entered so the values are written into the PWB’s RAM.
(d) In the Peripherals -> Keyer Settings -> Audio Levels menu, decrease the Keying Pot
value by 1 and press Done. Then increase the Keying pot value to its original value and
press Done.
(e) In the Peripherals -> Keyer Settings -> Keyer Modulation menu, toggle the tone
frequency. Toggle the Tone Frequency again so it returns to the original setting. Also
toggle Modulation, Keyer and Tone Generator OFF and then ON.
(f) Record all the settings in the Peripherals -> Keyer Settings -> Keyer Sequence menu,
including Frame Sequence, Keyed String, Frame Format and Frame Timing.
(g) Record all the settings in the Peripherals -> Keyer Settings -> Standby Code 1 and
Standby Code 2 menus.
(h) Set the transmitter RF output power to 0 W (press Power Increase and Decrease
buttons at the same time).
(i) Press RF On and increase the RF output power to 25 W.
(j) Record the modulation depth (Mod %) from the GUI’s Meters screen.
(k) Connect an oscilloscope or frequency counter to the RF synthesizer PWB’s output
(A5TP7) and verify the transmitter is operating at the correct carrier frequency.
(l) In the Changeover Control menu, set the Main side to B so that the transmitter switches
to operate on side B.
(m) Verify the transmitter RF output power is 25 W. If the transmitter power is not 25 W,
adjust GAIN TRIM potentiometer R31 on the side B interphase PDM driver PWB (A9)
until the output power is 25 W.
(n) Again measure the modulation depth (Mod %) from the GUI’s Meters screen. If the
modulation depth is not the same as measured in step 3 (j) change the Side B Scale
value (in the Peripherals -> Keyer Settings -> Audio Levels menu) until the modulation
level is the same as it was in 3 (j). Ensure the Side A Keying Pot value is restored to its
initial value (see 3.6.13.1 in the Vector-LP manual).

Vector-LP – Adding Standby Side Page 8
FM10011 Issue 1.0
(o) Verify the settings in the Peripherals -> Keyer Settings -> Keyer Sequence, Standby
Code 1 and Standby Code 2 menus are the same as recorded in steps 3 (f) and (g).
(p) In the Changeover Control menu, set the Main side to A so that the transmitter switches
to operate on side A.
(q) Set transmitter to operate at desired output power and modulation level.
(r) In the Changeover Control menu, set the Main side to B so that the transmitter switches
to operate on side B.
(s) Verify the modulation and power level are the same as side A operation. If not adjust
power level using the GAIN TRIM potentiometer R31 on the side B interphase PDM
driver PWB (A9) and modulation depth using the Side B Scale value in the Peripherals ->
Keyer Settings -> Audio Levels menu.
(t) Compute the power and mod % thresholds as detailed in paragraph 3.6.7 of the
Vector-LP manual.
3.2 DGPS Applications
(a) Remove any ac power “lock out” devices and apply ac power (and dc power source, if
applicable) to the transmitter.
(b) Terminate the transmitter’s RF output in a suitable 50 ohm dummy load.
(c) In the Changeover Control menu, set Monitor mode to BYPASS and Main side to A.
(d) Set the transmitter RF output power to 0 W (press Power Increase and Decrease
buttons at the same time).
(e) Press RF On and increase the RF output power to 25 W.
(f) In the Changeover Control menu, set the Main side to B so that the transmitter switches
to operate on side B.
(g) Verify the transmitter RF output power is 25 W. If the transmitter power is not 25 W,
adjust GAIN TRIM potentiometer R31 on the side B interphase PDM driver PWB (A9)
until the output power is 25 W.
(h) In the Changeover Control menu, set the Main side to A so that the transmitter switches
to operate on side A.
(i) Set transmitter to operate at desired output power level.
(j) In the Changeover Control menu, set the Main side to B so that the transmitter switches
to operate on side B.
(k) Verify the power level is the same as side A operation. If not adjust power level using the
GAIN TRIM potentiometer R31 on the side B interphase PDM driver PWB (A9).
(l) Compute the power and mod % thresholds as detailed in paragraph 3.6.7 of the
Vector-LP manual.

Page 9 Vector-LP – Adding Standby Side
Issue 1.0 FM10011
4 COMPLETION OF STANDBY SIDE INSTALLATION
(a) In the Changeover Control menu, set Monitor mode to NORMAL and Main side to A.
(b) Wait one (1) minute and verify the transmitter does not change over.
(c) Install the interphase PDM driver cover which was removed in step 2.3 (b).
(d) The transmitter modification is now complete.