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All trademarks appearing within this PDF are trademarks of their respective owners.
pending. Information in this publication supercedes that in all previously
published material. Specifications and price change privileges reserved.
Printed in the U.S.A.
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TEKTRONIX and TEK are registered trademarks of T ektronix, Inc.
WARRANTY
Tektronix warrants that the products that it manufactures and sells will be free from defects
in materials and workmanship for a period of one (1) year from the date of shipment. If a
product proves defective during this warranty period, Tektronix, at its option, either will
repair the defective product without charge for parts and labor, or will provide a
replacement in exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the
defect before the expiration of the warranty period and make suitable arrangements for the
performance of service. Customer shall be responsible for packaging and shipping the
defective product to the service center designated by Tektronix, with shipping charges
prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to
a location within the country in which the Tektronix service center is located. Customer
shall be responsible for paying all shipping charges, duties, taxes, and any other charges for
products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or
improper or inadequate maintenance and care. Tektronix shall not be obligated to furnish
service under this warranty a) to repair damage resulting from attempts by personnel other
than Tektronix representatives to install, repair or service the product; b) to repair damage
resulting from improper use or connection to incompatible equipment; c) to repair any
damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a
product that has been modified or integrated with other products when the effect of such
modification or integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER
WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS
DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY
TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF
THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE
FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR
HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
Review the following safety precautions to avoid injury and prevent
damage to this product or any products connected to it. T o avoid
potential hazards, use this product only as specified.
Only qualified personnel should perform service procedures.
To Avoid Fire or Personal Injury
Observe All Terminal Ratings. To avoid fire or shock hazard, observe
all ratings and markings on the product. Consult the product manual
for further ratings information before making connections to the
product.
The common terminal is at ground potential. Do not connect the
common terminal to elevated voltages.
Replace Batteries Properly . Replace batteries only with the proper
type and rating specified.
Recharge Batteries Properly . Recharge batteries for the recommended
charge cycle only.
Use Proper AC Adapter. Use only the AC adapter specified for this
product.
Do Not Operate Without Covers. Do not operate this product with
covers or panels removed.
Use Proper Fuse. Use only the fuse type and rating specified for this
product.
Avoid Exposed Circuitry. Do not touch exposed connections and
components when power is present.
Do Not Operate With Suspected Failures. If you suspect there is
damage to this product, have it inspected by qualified service
personnel.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
TSG 95 Pathfinder User Manual
v
Contents
Safety Terms and Symbols
Terms in This Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that
could result in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that
could result in damage to this product or other property.
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you
read the marking.
WARNING indicates an injury hazard not immediately accessible as
you read the marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. These symbols may appear on the product:
CAUTION
Refer to Manual
Double
Insulated
Battery Recycling
This product contains a Nickel Cadmium (NiCd) battery, which must
be recycled or disposed of properly. For the location of a local
battery recycler in the U.S. or Canada, please contact:
Please read the following statements before using your new TSG 95
Pathfinder, then see the rest of the section for tips on supplying power, making preliminary settings, and connecting the instrument.
WARNING. Install or replace batteries only with the instrument
switched OFF and the AC adapter disconnected. Electrical shock or
equipment damage can result.
CAUTION. Do not attempt to operate the TSG 95 with an improper
AC adapter. Damage to the instrument can result.
For best results, use the AC adapter supplied with the instrument. If
the supplied adapter is incorrect for the local AC power supply, contact your nearest T ektronix representative.
The adapter voltage must be 9 to 15 VDC with an open-circuit voltage less than 18 VDC; the adapter connector must have the negative
(–) polarity contact in the center.
NOTE. Internal batteries are recommended when using an external
power adapter. A loose adapter connector can cause the loss of some
user settings and unexpected results the next time the instrument is
powered on.
The battery type, disposable or rechargeable, must be selected using
through the Utility menu (see page 6). Failure to select the proper
battery type can result in damage to the batteries and product.
Replace the batteries only with standard AA batteries (1.2–1.5 V,
nominal), or the T ektronix rechargeable battery pack listed on
page 69.
For more information, please contact your nearest T ektronix representative or field office. In the United States and Canada, you can
also call the T ektronix information number, 1-800-TEK-WIDE
(1-800-835-9433), between 8:00 am and 5:00 pm Pacific time.
TSG 95 Pathfinder User Manual
1
Getting Started
Supplying Power
The TSG 95 is DC powered. You may power it with the standard AC
adapter, the optional 9.6 V NiCad battery pack, eight standard AA
batteries, or a “BP” type battery pack with the correct voltage and
polarity. The external DC power connector is on the left side of the
instrument.
T o install AA batteries or the battery pack, open the battery compartment of the TSG 95 by pressing down on the cover and sliding it in
the direction of the inscribed arrow, as shown above. When the cover
tabs line up with the slots in the case, lift the cover away from the
instrument. Install batteries in alternating directions as indicated by
the graphic molded into the “floor” of the battery compartment. If
using the optional battery pack, take the time to identify both contacts and install the pack properly.
When selecting a power source for your TSG 95, please remember:
H Attempting to use an improper AC adapter can damage the
instrument. See the Caution statement on the previous page.
H There is no need to remove the optional NiCad battery pack for
recharging. The TSG 95 will “trickle charge” the battery pack
whenever the standard AC adapter is used. Recharging the
battery pack fully can take up to 16 hours. Note that charging
will occur only if the adapter supplies at least 12V; make sure
that the adapter you use is appropriate for the local AC supply.
H AA batteries are not included with the instrument; obtain them
locally . Rechargeable AA batteries may be used, but they will
NOT be recharged automatically by the AC adapter. To recharge
2
TSG 95 Pathfinder User Manual
Getting Started
AA batteries, remove them from the instrument and use an
appropriate battery charger. For safety , read and follow the
battery charger instructions. Do NOT attempt to recharge
standard alkaline batteries.
H After a minute with no key-press, the TSG 95 will automatically
switch to lock out mode (as if you had pressed the Lock Out
key); the display back light will shut off to conserve battery
charge. When you want to resume keypad input, press Lock Out to
exit lock out mode.
H T o guard against battery discharge if you forget to turn the
TSG 95 off after use, enable Auto Power Down through the
Utility menu (see page 6).
H The TSG 95 can sense low battery voltage. It will warn you when
the charge is sufficient for approximately ten more minutes of
operation. The instrument will shut itself down when the battery
voltage becomes too low for reliable operation. For proper function of these features, the Battery T ype must be set correctly in
the Utility menu.. Please see “Setting the Battery T ype,” which
follows.
The ON key toggles instrument power On and Off.
Connecting the TSG95
Connect the Pathfinder to your equipment as you would any television test signal generator. Use 75W coaxial cable (for video) and be
sure that the signal path is properly terminated.
TSG 95 Pathfinder User Manual
12
3
Pin 1 = GND
Pin 2 = POS (+)
Pin 3 = NEG (–)
3
Getting Started
You may wish to confirm proper operation of your TSG95—and
gain familiarity with it—by first connecting it directly to a video or
waveform monitor.
A performance verification procedure, which some users may require
for acceptance testing, is included in the optional TSG 95 service
manual (T ek p/n 070-8917-0x). To order a service manual, please
contact your nearest T ektronix representative or field office.
Keypad and Display Conventions
Please see the Instruction card (p/n 070-8915-00) supplied with your
TSG 95 for a “tour” of the keypad and an explanation of the display
symbols. For your convenience, the following panels are taken from
the card.
4
TSG 95 Pathfinder User Manual
Definitions
There are two phrases used in this manual that deserve a little explanation. We at Tektronix sincerely hope that these explanations do
not confuse you further.
Signal Set— The group of signals that can be selected through the
TSG 95 keypad at a given time. In the preprogrammed signal sets, all
of the signals are the same video standard. You may create a “User”
signal set, however, that contains both PAL and NTSC signals assigned to the letter keys of your choice, for easy selection.
Tone Level— One of four predefined audio output amplitudes that
may be selected through the T one menu. The levels (1 through 4) are
“named” –10, 0, +4, and +8 dBu and calibrated to those amplitudes
when the TSG 95 is manufactured. Qualified personnel, with the appropriate equipment, can rename and readjust the levels between –10
and +10 dBu. See page 24 for more discussion; see the Service
manual for instructions.
Preliminary Settings
Once the Pathfinder is up and running, you should choose some settings depending on how you’ll be using the instrument. These settings are made through the Utility menu. Invoke the Utility menu by
holding Lock Out down while pressing the ON key, then follow these
directions to set the Video Standard and Battery Type, and enable
Auto Power Down (if desired).
Getting Started
Choose the Video Standard/Signal Set
1. Use the Y and B keys to scroll to the SELECT STNDRD menu
item.
2. Select, with the A and " keys, the signal standard or “signal set”
that is appropriate to your application. The choices are: PAL;
NTSC; NTSC JAPAN, which includes NTSC signals with 0%
setup; and USER SIG SET, the user-configurable signal set that
can contain up to 26 signals of your choice—see page 20 for
more information.
3. When the name of the desired signal set is displayed, continue to
the Battery T ype, or press any rectangular key to exit the Utility
menu and return to normal operation.
TSG 95 Pathfinder User Manual
5
Getting Started
Set the Battery T ype
1. While still in the Utility menu, use the Y and B keys to scroll to
2. T oggle to the selection that matches the type of battery you have
3. When the correct battery type is displayed, continue to Auto
Enable (Disable) Auto Power Down
“Auto Power Down” will switch the instrument off when ten minutes
have passed without a key press. Enable this feature when you are
using battery power and operating in an environment in which unplanned shutdown of the TSG 95 is permissible.
the BATTERY TYPE item.
installed in your TSG 95 by pressing either
A or ". The choices
are “rechargeable” and “disposable.” Select rechargeable when
using NiCad AA cells or the optional battery pack; choose disposable when you are using common Alkaline AA batteries,
which cannot be recharged.
Power Down, or press any rectangular key to exit the Utility
menu and return to normal operation.
1. While still in the Utility menu, use the
the AUTO PWR DOWN item.
2. Disable/enable Auto Power Down by pressing either
new state will be in effect when you return to normal operation.
Enabled Auto Power Down is indicated by a “rotating line” symbol in the upper-right corner of the Pathfinder display.
3. Use the Y and B keys to access other Utility menu items, or
press any rectangular key to exit the menu and resume normal
operation.
Other Settings
There are other, less important TSG95 settings that are configured
through the Utility menu and its Calibration submenu. See “The
Utility Menu,” beginning on page 17 for more information.
6
Y and B keys to scroll to
A or ". The
TSG 95 Pathfinder User Manual
Operating Basics
T o begin using the instrument as quickly as possible, see “Using your
TSG 95,” below . For even more information on selected topics, turn
to the Reference section of this manual, beginning on page 17.
Using Your TSG95
Here’s what you can do with your TSG95. Instructions for each use
begin on the indicated page.
H Output either PAL or NTSC video test signals (page 9). You
can configure the instrument to generate:
h PAL signals
TSG 95 Pathfinder User Manual
7
Operating Basics
h NTSC signals
h “NTSC JAPAN” signals that have 0 IRE (as opposed to 7.5
h A “User Signal Set” that can contain selections from all three
See page 5 in the Getting Started section for information on
choosing a video standard/signal set. Directions for creating (or
editing) your own User signal set begin on page 20.
H Generate audio tones (page 10). You may:
h Choose one of 13 discrete “factory” frequencies, or select a
h Designate three “User Frequencies” in the same range
h Select a factory-calibrated audio output level of –10, 0, +4, or
IRE, used in North America) setup
lists, as well as VITS and non–VITS versions of the same
signal (permitting you to choose VITS without entering the
Utility menu). If you want, the User signal set can even include both PAL and NTSC signals.
frequency sweep that sweeps repeatedly from 50 Hz to
20 kHz (page 10)
(page 23) and later output one of these frequencies
+8 dBu (page 11)
h Recalibrate the audio output to permit selection of any whole
dB level between –10 and –3 dBu, or 0 through +10 dBu
(qualified service technicians only —page 24)
h Include channel-ID “clicks” in the audio output (page 11)
H Add an ID message to the video signal (pages 11), edit it (page
12), and place it in the vertical interval or position it where
desired in the active video (page 12)
H Store up to eight ID messages for later use (page 13)
H Create a sequence of (up to four) stored ID messages that will
cycle continuously in the output (page 14)
H Save all the current instrument settings as a “Preset” for later
recall (page 15)
8
TSG 95 Pathfinder User Manual
Operating Basics
Á
Á
Á
Á
ÁÁÁ
Á
Outputting T est Signals
1. Connect the TSG 95 to your system and make the appropriate
preliminary settings as described in the Getting Started section of
this manual.
2. Switch the instrument on or return to normal operation by pressing either the Bars or Other Signals key. By default, the instrument “powers up” with the settings that were in effect when it
was last switched off.
3. Select the desired test signal one of four ways:
h Press the Bars key repeatedly to select among the available
color bars signals. The signal will be output as soon as the
name is displayed on the TSG 95 LCD.
h Press the Other Signals key repeatedly to select among the
“non-bars” signals. Again, the signal will be output as soon as
its name is displayed on the LCD.
h Use the
Y and B keys to scroll through the full list of signals
until you get to the desired signal.
h Press the appropriate letter key (A through U) to “direct-se-
lect” the signal. The available signals and their corresponding
keys are listed in T able 1, below.
Table 1: TSG95 V ideo Test Signals
PAL
ÁÁÁÁ
Signal Set
75% Bars
100% Bars
75% Bars/Red
100% Bars/Red
Convergence
Pluge
Safe Area
Green Field
Blue Field
Red Field
NTSC
БББББ
Signal Set
SMPTE Bars
75% Bars
Convergence
Safe Area
Red Field
50 IRE Flat Field
100 IRE Flat Field
Black Burst
5-Step
Multiburst
NTSC JAPAN
ÁÁÁÁ
Signal Set
SMPTE Bars*
75% Bars*
SNG Bars*
Convergence
Safe Area
Red Field*
50 IRE Flat Field
100 IRE Flat Field
Black Burst*
5-Step
Á
Key
A
B
C
D
E
F
G
H
I
J
TSG 95 Pathfinder User Manual
9
Operating Basics
Table 1: TSG95 V ideo Test Signals (Cont.)
PAL
Signal Set
100% Flat Field
50% Flat Field
0% Flat Field
Multiburst
60% Sweep
5-Step
Mod. 5-Step
Matrix
Field Square Wave
Bounce
—
* These signals differ from those in the NTSC signal set.
NTSC
Signal Set
NTC7 Composite
NTC7 Combination
FCC Composite
Cable Multiburst
Cable Sweep
SIN X/X
Matrix
0 IRE, no Burst
Field Square Wave
Bounce
—
NTSC JAPAN
Signal Set
Multiburst
NTC7 Composite
NTC7 Combination
FCC Composite
Cable Multiburst
Cable Sweep
SIN X/X
Matrix*
0 IRE, no Burst
Field Square Wave
Bounce
Key
K
L
M
N
O
P
Q
R
S
T
U
Outputting Audio T ones
H T oggle the audio output On/Off by pressing the Tone On/Off key.
Selecting the Audio Frequency
1. Enter the T one menu (press Shift, then Tone On/Off). The first menu
item is TONE FREQ.
10
2. Use the A and " keys to select the desired frequency. The
choices are:
50, 63, 125, 250, and 400 Hz;
1, 2, 4, 8, 10, 12.5, 16, and 20 kHz;
USER1, USER2, USER3; and
SWEEP 50–20K (a 50 Hz–20 kHz sweep)
You may specify the USER# frequencies through the Utility/Calibration menu; see page 23. (Note that there is no default value
for USER3; therefore, the USER3 choice will not appear in a
new—or reset—instrument.)
TSG 95 Pathfinder User Manual
Operating Basics
You can pause a sweep at any of its 27 frequency steps (listed in
T able 10 in the Characteristics section) by pressing Enter when in
the TONE FREQ menu item and SWEEP 50–20K is selected.
The message SWEEP PAUSED will appear on the display. You
may find this capability useful for checking a problem noticed at
a particular frequency while sweeping. Press Enter a second time
to resume the frequency sweep.
3. T one frequencies are in effect as soon as they are indicated on the
display. Scroll down to other Audio menu items with the
B key,
or exit the menu by pressing any rectangular key.
Setting the Audio T one Level (Amplitude)
1. In the Audio menu, use the B or Y key to reach the TONE
LEVEL item.
2. Use the A and " keys to select the desired level. When manufactured, the four TSG 95 tone levels are designated as –10, 0, +4,
and +8 dBu and calibrated to those amplitudes. Qualified technicians may rename and recalibrate the tone levels to any integer
value in the ranges of –10 to –3 dBu and 0 to +10 dBu. See page
24 for more information; see the optional Service manual for
instructions.
3. The new tone level will be in effect immediately. Scroll to other
Audio menu items with the
pressing any rectangular key.
Inserting Channel–ID Clicks in the Audio
When click is enabled, the instrument will insert a single click into
channel 1, and a double click into channel 2.
1. In the Audio menu, use the
2. Use the A and " keys to toggle the ID clicks On/Off.
3. Scroll to other Audio menu items with the B or Y key , or exit the
menu by pressing any rectangular key.
Inserting ID Messages
H T oggle the ID message or cycle on and off by pressing the ID
key. The status of the ID—on, off, or cyc (cycle)—is
On/Off
TSG 95 Pathfinder User Manual
B or Y key, or exit the menu by
B or Y key to reach the CLICK item.
11
Operating Basics
indicated on the second line of the TSG 95 display , as shown in
the next illustration.
Editing ID Messages
In the TSG 95, only the current ID message may be edited. The “current” message is the ID that will appear in the output if ID=on. (The
current ID will not appear in the output when ID=off, and may not
appear in the output if ID=cyc, but it can still be edited and saved in
either case.)
1. Press
2. Use the arrow keys to position the blinking underline cursor and
3. Press Enter or one of the rectangular keys to terminate the ID edit;
ID Edit. The current ID message will appear on the LCD.
enter text with the alphanumeric keys.
the new ID will become the current ID. If ID=on, the new ID will
be inserted into the video output. Note that if a stored ID or preset is recalled before new current ID is saved (see “Saving ID
Messages,” page 13), the changes will be overwritten and lost.
Positioning ID Messages
The current ID can be positioned within the safe area of active video,
or the first line can be placed in the vertical interval.
1. Press Shift, then ID Edit. The LCD will look something like this:
2. Change the horizontal (H) position with the A / " keys and the
vertical (V) position with the Y / B keys.
The H position can range from ØØ (left edge of safe area) to
69–3n, where n is the number (1–16) of the right-most character
position occupied by the message. Note that, when editing a short
message (n<16) that has been placed as far to the right as pos-
12
TSG 95 Pathfinder User Manual
Operating Basics
sible, the end character positions will be occupied by
symbols.
You will not be able to put characters in those positions until the
message is repositioned to the left.
The V setting can range from ØØ (top of safe area) to 41 (bottom). The vertical interval is indicated by V=vert; it is one
Y
key-press above V=ØØ. Only the first ID message line will fit
into the vertical interval.
3. When the ID message is in the desired position, press any rectangular key to resume normal operation. Note that the position of
an ID message is part of its definition. You must save the ID message (see below) to save its new location. If a stored ID or preset
is recalled before the current ID (in its new location) is saved, the
new location will be lost.
Saving ID Messages
The contents and position of the current ID can be stored in one of
eight ID# locations for later recall or inclusion in an ID cycle.
1. Press Shift, then Recall. The display will change to resemble this
illustration:
The first line of the current message will occupy the bottom half
of the display. You may scroll between the first and second lines
of the message with the B and Y keys.
2. Use the A and " keys to select the ID# location (1 through 8) in
which the current message is to be stored. Note that the previous
contents of that location will be overwritten.
3. When the desired storage number is displayed, press Enter to save
the message; press any rectangular key to abort the operation and
return the instrument to normal operation.
Recall the message later with the
TSG 95 Pathfinder User Manual
Recall key, as described next.
13
Operating Basics
Recalling ID Messages
1. Press the Recall key.
2. Use the A and " keys to select one of the ID message numbers,
ID# 1 through ID# 8. The first line of the message will appear on
the second display line; press the
the message. For example, if the saved ID# 1 is “TEKTRONIX
TSG95 PAL/NTSC,” the display will first look like this:
Pressing the B key will change it to this:
Note that an empty character position will show as a black space
in the video, while the symbol indicates a “Blank.” Underlying
video will show through a Blank.
B key to see the second line of
14
3. Press Enter to recall the ID message.
4. Press any rectangular key to exit the Recall menu and resume
normal operation.
Setting up an ID Cycle
An ID cycle is a sequence of up to four stored ID messages. Once
you set up a cycle, it will be inserted in the video output if: ID is
toggled On with the ID On/Off key, and the ID CYCLE item of the ID
menu is set to “on.” When those two conditions are met, the TSG 95
display will indicate ID=cyc during normal operation.
1. Edit and save the ID messages that you want to cycle (see
“Editing ID messages,” page 12). Note the numbers of the IDs,
and the order in which they should appear.
2. Enter the ID menu by pressing Shift, then ID On/Off.
3. Press
B twice to reach the CYCLE SETUP item, then press Enter.
The display will resemble the following illustration.
TSG 95 Pathfinder User Manual
Operating Basics
4. Use the A / " keys to move the underline cursor to one of the
four sequence “time intervals.” The IDs will appear in the order
that their numbers appear—from left to right—on the display.
5. Use the Y / B keys to select the number of the ID to appear
during each interval. Choose the hyphen (it’s below #1) to
eliminate the interval. If you want a blank interval (that is, a time
gap between ID messages), you must create an all-blank ID to put
in that interval.
6. When the correct ID numbers occupy all four time interval positions, press a rectangular key to exit the ID menu. The cycle sequence information will be written to the instrument’s memory.
Note that the TSG 95 “remembers” the ID#, not the actual
message. Therefore, if you save a new message as ID# 1, the new
message will appear the next time an ID cycle comes to a time
interval in which ID# 1 is displayed.
7. To set the duration of each cycle time interval, re-enter the ID
menu (by pressing
reach the CYCLE TIME menu item. Use the horizontal arrow
keys to select the duration between one and nine seconds.
8. To insert the ID cycle instead of the current ID, scroll up the ID
menu to the ID CYCLE (on/off) selection. Press
the selection. The cycle will appear in the picture if toggled on
with the ID On/Off key.
Saving (Storing) Presets
1. Press Shift and then Recall.
2. Scroll through the “STORE ID” (#1 through #8) and “STO PRESET” (#1 through #4) locations with the A / " keys. The first line
of the current ID will be displayed on the second line of the LCD.
3. When the desired storage number is displayed, press Enter to save
the current instrument settings. Remember that storing the current
TSG 95 Pathfinder User Manual
Shift, then ID On/Off), then press the B key to
A or " to toggle
15
Operating Basics
settings will overwrite the contents of the selected PRESET#
location.
4. Press any rectangular key to exit the Store function.
A preset includes most of the instrument settings in effect when the
preset is saved.. The settings not stored in a preset are: Standard/signal set; auto power down status; user tone frequencies; and battery
type. While the current tone level (one of four possible; see page 5)
becomes part of the preset, its name and actual amplitude—both set
through the Calibration menu—are not.
Note also that while the current ID is saved, the particular messages
used in a saved cycle are not stored. Thus, if the cycle stored with a
preset “remembers” to display ID# 4 (for example), the latest message in ID# 4 will appear whenever that preset is recalled. Remember, editing an ID message can have an affect on what you get when
you recall a preset.
Recalling Presets
1. Press Recall.
2. Scroll through the “RECALL ID” (#1 through #8) and “RCL
PRESET” (#1 through #4) locations with the A / " keys. The first
line of the preset’s “current” ID message will occupy the bottom
line of the display; use the B key to see the second line.
16
3. When the desired storage number is displayed, press Enter to
recall the preset. The video and audio output of the TSG 95 will
return to the signal and tone that was selected when the preset
was stored.
4. Press any rectangular key to exit the Recall menu.
TSG 95 Pathfinder User Manual
Reference
This section discusses several aspects of the TSG 95 that are manipulated or configured through the Utility menu. Important topics that
are not discussed elsewhere in this manual include:
H Editing the User signal set, page 20
H Selecting User tone frequencies, page 23
H Audio T one Level CAUTIONs, page 24
H Factory Reset, page 26
The Utility Menu
To enter the Utility menu, hold the Lock Out button down while
pressing the ON button. T o exit the Utility menu and resume normal
operation, press any of the rectangular buttons at the top of the keypad, or scroll to the EXIT MENU item and press
The Utility menu items are listed below. Use the up (Y) and down
(B) arrow keys to scroll up and down the list. Note that there are two
submenus: Calibration (CALIB) and Diagnostic (DIAGN). These
submenus are discussed in separate sections, below.
Enter.
Y
B
A"
1. Standard/Signal Set select; use the A or " key to select the desired set of signals. The choices are: PAL, NTSC, NTSC JAPAN
(which includes NTSC signals with 0% Setup), and USER SIG
SET .
Y
B
2. This item permits construction or editing of a custom “User Signal Set” that can contain up to 26 signals chosen from a list of all
the signals that the TSG 95 can generate. Thus you can create a
User signal set that has both PAL and NTSC signals. Or you can
TSG 95 Pathfinder User Manual
17
Reference
make a signal set that contains only the signals that you use regularly and “bind” them to letter keys that are easy for you to remember. For example, you can assign the Bounce signal to
Matrix without VITS to M, a Matrix with VITS to N, and the Red
Field to
R. (Note that control of VITS insertion through the next
Utility menu item is disabled when the User signal set is active.)
Instructions for editing the Use signal set—with a list of all
available signals—begin on page 20.
Y
B
3VITS SIGNALS
VITS SIGNALS A"
3. VITS (Vertical Interval Test Signals); use the A or " key to
toggle between VITS SIGNALS and NO VITS SIGS. When
VITS SIGNALS is selected, the listed signals will include VITS
(see T ables 4 and 8 in the Characteristics section) whenever they
are output.. This utility is disabled when the User signal set is
selected.
Signals that can include VITS
PAL 100% FLD
PAL 50% FLD
PAL 0% FIELD
PAL MATRIX
NTSC 100 IRE
NTSC 50 IRE
NTSC BLK BRST
NTSC MATRIX
JPN 100 IRE
JPN 50 IRE
JPN BLCK BRST
JPN MATRIX
B, a
18
Y
B
4 AUTO POWR DOWN
disable A"
4. Auto power down; use the left (A ) or right (") arrow key to
toggle between enabled and disabled.
TSG 95 Pathfinder User Manual
Reference
The Auto Power Down function shuts the TSG 95 off to conserve
battery charge when there has been no key press for approximately 10 minutes. The Auto Power Down symbol (a rotating line)
appears in the upper-right corner of the display when the function
is enabled.
Y
5BATTERY TYPE
B
disposable A"
5. Battery type; use the A or " key to toggle between disposable
(Alkaline AA cells) or rechargeable (NiCad cells or the optional
battery pack). For best results when operating the TSG 95 under
battery power, this setting must match the installed type of battery.
Y
B
6CALIB SUBMENU
Press Enter
6. Press Enter to “drop into” the Calibration submenu. This submenu
includes items for specifying the User tone frequencies, choosing
and calibrating audio tone amplitudes, and performing a “Factory
Reset.” Please see the Calibration Submenu section, which begins
immediately after this discussion of top level items.
Y
B
7DIAGN SUBMENU
Press Enter
7. Press Enter to “drop into” the Diagnostic submenu. The Diagnostic submenu functions are intended for use when the instrument is
manufactured or serviced. Please see the optional Service manual
(Tektronix p/n 070-8917-0
Y
B
EXIT MENU
Press Enter
8. To exit the Utility menu, scroll to this item and press Enter. The
instrument will resume normal operation (notice that changes
made through the Utility menu items and submenus will take effect immediately).
TSG 95 Pathfinder User Manual
X) for more information.
19
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БББББББББББББББ
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Reference
БББББББББББББББ
БББББББББББББББ
БББББББББББББББ
БББББББББББББББ
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БББББББББББББББ
БББББББББББББББ
БББББББББББББББ
Creating/Editing the User Signal Set
1. When in the top level of the Utility menu, use the Y / B keys to
scroll the the SEL USER SIGS item.
Y
B
2. Press Enter to edit the User signal set. The display will become:
A"
Y
B
3. Select a letter key from A to Z with the A and " keys, or simply
press the letter key itself.
4. Use the Y and B keys to choose the signal (PAL, NTSC, or
NTSC JAPAN) to be “associated” with the letter key. The available signals are listed in order below. Signals that include a VITS
are indicated by an asterisk (*). The “No Signal” selections that
separate the PAL, NTSC, and JPN portions of the list may be
used to designate a letter key as “undefined.”
The specified signal will become part of the User signal set. You
can select it (when the User signal set is active) with normal signal selection techniques: see the Operating Basics section of this
manual or the TSG 95 Instruction card for details.
5. Add more signals to the User set by selecting additional letter
keys (step 3) and choosing new signals for them (step 4). When
you’re done, press
Enter to exit the “SEL USER SIGS” item.
Signals available for the User Signal Set
PAL 75% BARS
PAL 100% BARS
PAL 75% / RED
PAL 100% / RED
PAL CONVERGENCE
PAL PLUGE
PAL SAFE AREA
PAL GREEN FIELD
20
TSG 95 Pathfinder User Manual
Signals available for the User Signal Set (Cont.)
PAL BLUE FIELD
PAL RED FIELD
PAL 100% FIELD
PAL 100% FLD VT*
PAL 50% FIELD
PAL 50% FLD VT*
PAL 0% FIELD
PAL 0% FIELD VT*
PAL MULTIBURST
PAL 60% SWEEP
PAL 5-STEP
PAL MOD 5-STEP
PAL MATRIX
PAL MATRIX VTS*
PAL FLD SQ WAVE
PAL BOUNCE
NO SIGNAL
NTSC SMPTE BARS
NTSC 75% BARS
NTSC CONVERGENCE
NTSC SAFE AREA
NTSC RED FIELD
NTSC 100 IRE
NTSC 100 IRE VT*
NTSC 50 IRE
NTSC 50 IRE VT*
NTSC BLK BURST
NTSC BLK BRST V*
NTSC 5-STEP
NTSC MULTIBURST
NTSC NTC7 CMPST
NTSC NTC7 COMB.
NTSC FCC CMPST
NTSC CABLE MB
Only the “SET USR# TONE” items of this menu are intended for use
by the typical TSG 95 user. Be sure you know what you are doing
before using or changing any of the other submenu items.
Y
1CALIBRATION
B
UNLOCKED A"
1. Toggle calibration from UNLOCKED to LOCKED with the A or
" key. When calibration is locked, only this and the EXIT SUB-
MENU menu items will be visible; when unlocked, all items in
the calibration submenu will be available.
Y
2SET USR1 TONE
B
10395 HzA"
2. Set the “USER1” tone frequency with either the A and " keys, or
through direct input from the keypad. The keypad is automatically shifted when in this menu item, and only the number keys
(0–9) are active. The selection range is 50 through 20000 Hz; the
factory default is 10395 Hz.
Reference
Y
3SET USR2 TONE
B
7867 HzA"
3. Set the “USER2” tone frequency, again with either the A and "
keys, or through direct input from the keypad. Factory default is
7867 Hz.
Y
4SET USR3 TONE
B
- HzA"
4. Set the “USER3” tone frequency, again with either the A and "
keys, or through direct input from the keypad. Disable the User
tone by pressing “–” (D). Factory default is no selection/disabled,
as illustrated.
TSG 95 Pathfinder User Manual
23
Reference
Y
5TONE MIN LEVL
B
ADJUST POT
5. Used during manufacture to set tone level DC offset. See the
TSG 95 Service manual for more information.
Y
6NAME TONE LV1
B
-10dBu A"
6. Name tone level 1: combined with the next menu item, this permits qualified users with the appropriate equipment to change
tone level 1 from the factory default value of –10 dBu to a value
of their choice. The possible selections are –10 to –3 dBu and 0
to +10 dBu. This item only changes the name of the level as it
appears in the T one menu.
CAUTION. Changing a tone level name (menu items 6, 8, A, and C)
without recalibrating the amplitude through the following menu item
is not recommended. Please see the Service manual (Tektronix p/n
070-8917-0
X) for more information. A FACTORY RESET will NOT
restore the tone level names to their original values.
24
Y
7CAL TONE LV1
B
-10dB: Low 17 A"
7. Calibrate tone level 1: this item is used during manufacture to
calibrate the first tone level to –10 dBu. Qualified users may also
use it to readjust the tone amplitude to accurately reflect the level
name chosen in the previous menu item. The range of adjustment
is Low 00 to Hgh (high) 99.
CAUTION. Changing the “CAL TONE LV#” settings (menu items 7, 9,
B, and D) will affect the audio tone amplitude and can give unexpected or inaccurate results. A FACTORY RESET will NOT restore
these settings to their original values. These settings should be
changed by Qualified Service Personnel ONLY. Please see the
TSG 95 Service manual (p/n 070-8917-0
X) for more information.
TSG 95 Pathfinder User Manual
Reference
To ensure your ability to restore the original factory tone
calibration settings in the case of inadvertent changes, please
record the following information:
TSG 95 serial number:
Original –10 dB setting: (e.g., Low 17)
Also take the time to record the settings for the remaining tone
levels in menu (list) items 9, B (11), and D (13).
Y
8NAME TONE LV2
B
0dBu A"
8. Name tone level 2: use this—and the next menu item—to change
tone level 2 from the factory default value of 0 dBu to a value of
your choice. See menu/list item 6, above.
Y
9CAL TONE LV2
B
0dB: Hgh 00 A"
9. Calibrate tone level 2: please see menu/list item 7, above.
Original 0 dB setting: (e.g., Low 99)
Y
ANAME TONE LV3
B
+4dBu A"
10. Name tone level 3: use this—with the next menu item—to
change tone level 3 from the factory default value of +4 dBu to a
value of your choice. See menu/list item 6, above.
Y
BCAL TONE LV3
B
+4dB: Hgh 25 A"
11. Calibrate tone level 3: please see menu/list item 7, above.
Original +4 dB setting: (e.g., Hgh 25)
TSG 95 Pathfinder User Manual
25
Reference
Y
CNAME TONE LV4
B
+8dBu A"
12. Name tone level 4: combined with the next menu item, this permits qualified users with the appropriate equipment to change
tone level 4 from the factory default value of +8 dBu to a value
of their choice. See menu/list item 6, above.
Y
DCAL TONE LV4
B
+8dB: Hgh 65 A"
13. Calibrate tone level 4: please see menu/list item 7, above.
Original +8 dB setting: (e.g., Hgh 65)
Y
EVIDEO CAL SIG
B
NORMAL SIGA"
14. This item selects special output signals used during manufacture.
Y
FFACTORY RESET
B
26
15. Press Enter to restore most of the original “as manufactured”
instrument settings. WARNING: All user selections, ID Mes-sages, and Presets will be lost. A factory reset may be appropriate when you wish to “erase” the User signal set, all ID messages,
or all Presets. Factory Reset will not restore the original audio
tone level names or calibration.
Y
B
EXIT SUBMENU
Press Enter
16. To exit the Calibration submenu, scroll to this item and press
Enter. The instrument will return to the “CALIB SUBMENU”
item in the Utility menu. T o exit the entire Utility menu from this
point, and resume normal instrument operation, press any rectangular key.
TSG 95 Pathfinder User Manual
Appendix A: Characteristics
The information in this section is included for the convenience of the
TSG 95 operator. It is not intended as a complete list of guaranteed
specifications. The waveform illustrations represent properly decoded output. For a full list of instrument specifications, as well as
performance verification and adjustment procedures, please see the
TSG 95 Service Manual (T ektronix p/n 070-8917-0
NOTE. Shielded cables were used in the EMI certification of this
instrument; therefore, it is recommended that shielded cables be used
when operating. (EC 92)
Safety Standard Compliance
The following safety standards apply to the TSG 95:
H ANSI S82 — Safety Standard for Electrical and Electronic T est,
Measuring, Controlling, and Related Equipment, 1988.
H CAN/CSA C22.2 No. 231 M89 — CSA Safety Requirements for
Electrical and Electronic Measuring and T est Equipment.
X).
H IEC1010-1 — Safety Requirements for Electrical Equipment for
Measurement, Control, and Laboratory Use (1990).
H UL1244 — Standard for Electrical and Electronic Measuring and
T esting Equipment, Second Edition (1980).
EMI Compliance
The following electromagnetic interference (EMI) standard applies
to the TSG 95:
H 47 CFR, Chapter 1 (FCC Rules), Part 15, Class A.
Refer to the compliance statement at the front of this manual for
other standards.
TSG 95 Pathfinder User Manual
27
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Appendix A: Characteristics
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Specification Tables
Table 2: General PAL Test Signal Characteristics
Characteristic
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Luminance Amplitude
Accuracy
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Chrominance-to-Luminance Gain
Blanking Level
Rise Time Accuracy
Burst Amplitude
Sync Amplitude
Sync Rise Time
Output Impedance
Return Loss
Subcarrier Stability
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Signal-to-Noise Ratio
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Chrominance-to-luminance
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Delay
SCH Phase
Frequency Response
to 4.8 MHz
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to 5.8 MHz
Field Tilt
Line Tilt
5-Step Linerarity Error
Differential Gain
Differential Phase
2T Pulse K-Factor
Performance
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Requirements
± 1% of 700 mV
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± 2% of 700 mV
0 V ± 50 mV
± 10%
300 mV ± 2% of 700 mV
300 mV± 2% of 700 mV
250 ns
and 800 Hz; then 1, 1.25, 1.6, 2, 2.5, 3.15, 4, 5, 6.3, 8, 10,
ББББББББББББ
12.4, 16, and 20 kHz.
≤ 1% (20 kHz bandwidth)
Channel 1, 1 click
Channel 2, 2 clicks
ББББББББББББ
Channel clicks are offset for positive channel identifica-
ББББББББББББ
tion.
40
TSG 95 Pathfinder User Manual
Table 11: Power Supply
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CharacteristicInformation
Altitude
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Operating
Storage
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DC Input Range
Fuse
Power Limit
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without adapter
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with adapter
Power Consumption
Audio and Back light
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off
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Audio and Back light
on
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Peak Inrush Current
ББББББББББББББ
to 15,000 feet (4572 m); IEC 1010-1 compliance to 2000 m
to 50,000 feet (15420 m)
ББББББББББББББ
9 to 15 VDC
2 A, 32 V min
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3.25 W
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5.25 W
Typical (not charging):
2.0 W
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2.5 W
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ББББББББББББББ
1.95 A @230 VAC, Environment E2
Appendix A: Characteristics
Table 12: Physical Characteristics
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Characteristic
Height
Width
Depth
Performance Information
5.6 cm (2.2 in)
9.1 cm (3.6 in)
19.1 cm (7.5 in)
Net Weight
TSG 95
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TSG with battery pack
Shipping Weight
TSG 95 Pathfinder User Manual
0.48 kg (1.06 lb)
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0.68 kg (1.5 lb)
1.50 kg (3.31 lb) with AC adapter
41
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Appendix A: Characteristics
Á
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Table 13: Environmental Characteristics
CharacteristicInformation
Temperature
Operating
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Storage
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0° C to +50° C (32 to +122° F); IEC 1010-1 compliance to
БББББББББББББ
+40° C
–30° C to +65° C (–22 to +149° F)
БББББББББББББ
Altitude
Operating
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Storage
Equipment Type
Equipment Class
Installation Category
to 15,000 feet (4572 m); IEC 1010-1 compliance to 2000 m
БББББББББББББ
to 50,000 feet (15420 m)
Test
Class III (as defined in IEC 1010-1, Annex H)
Category II (as definded in IEC 1010-1, Annex J)
Note: Rated for indoor use only.
Pollution Degree
Transportation
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Pollution Degree 2 (as defined in IEC 1010-1)
Meets the requirements of NTSB Test Procedure 1A, category
БББББББББББББ
II (24 inch drop)
42
TSG 95 Pathfinder User Manual
PAL Waveform Diagrams
NOTE. Time references in the following waveform diagrams apply to
the signal’s half-amplitude points or pulse peaks, unless indicated
otherwise.
Figure 1: PAL 75% Color Bars
Appendix A: Characteristics
Figure 2: PAL 100% Color Bars
TSG 95 Pathfinder User Manual
43
Appendix A: Characteristics
Figure 3: PAL 75% Red and Red Field
Figure 4: PAL 100% Red
44
TSG 95 Pathfinder User Manual
Figure 5: PAL Convergence (vertical lines)
Appendix A: Characteristics
Figure 6: PAL Convergence (horizontal lines)
TSG 95 Pathfinder User Manual
45
Appendix A: Characteristics
Figure 7: PAL Pluge
Figure 8: PAL Green Field
46
TSG 95 Pathfinder User Manual
Appendix A: Characteristics
Figure 9: PAL Safe Area
TSG 95 Pathfinder User Manual
47
Appendix A: Characteristics
Figure 10: PAL Blue Field
Figure 11: PAL 100% Flat Field and Bounce (High)
48
TSG 95 Pathfinder User Manual
Figure 12: PAL 50% Flat Field
Appendix A: Characteristics
Figure 13: PAL 0% Flat Field and Bounce (Low)
Figure 14: PAL Multiburst
TSG 95 Pathfinder User Manual
49
Appendix A: Characteristics
Figure 15: PAL Reduced Sweep
Figure 16: PAL 5-Step (Gray Scale)
50
TSG 95 Pathfinder User Manual
Figure 17: PAL Modulated 5-Step
Appendix A: Characteristics
Figure 18: PAL Matrix Signal — CCIR 17
TSG 95 Pathfinder User Manual
51
Appendix A: Characteristics
Figure 19: P AL Matrix Signal — CCIR Line 330
Figure 20: PAL Matrix Signal — CCIR Line 331
52
TSG 95 Pathfinder User Manual
Figure 21: P AL Matrix Signal — CCIR 18
Appendix A: Characteristics
Figure 22: PAL Matrix Signal — Sin(x)/x
TSG 95 Pathfinder User Manual
53
Appendix A: Characteristics
Figure 23: P AL Matrix Signal — 15 kHz Square Wave
Figure 24: PAL Matrix Signal — Shallow Ramp
54
TSG 95 Pathfinder User Manual
Figure 25: P AL Matrix Signal — UK ITS 1
Appendix A: Characteristics
Figure 26: PAL Matrix Signal — UK ITS 2
TSG 95 Pathfinder User Manual
55
Appendix A: Characteristics
NTSC Waveform Diagrams
Figure 27: NTSC 75% Color Bars
Figure 28: NTSC Convergence Components
56
TSG 95 Pathfinder User Manual
Appendix A: Characteristics
Figure 29: SMPTE (NTSC) Color Bar Components
TSG 95 Pathfinder User Manual
57
Appendix A: Characteristics
Figure 30: NTSC Safe Area Signal Components
58
TSG 95 Pathfinder User Manual
Appendix A: Characteristics
Figure 30 (cont.): NTSC Safe Area Signal Components
TSG 95 Pathfinder User Manual
59
Appendix A: Characteristics
Figure 31: NTSC Red Field
Figure 32: NTSC 30 IRE and 50 IRE Flat Fields
60
TSG 95 Pathfinder User Manual
Appendix A: Characteristics
Figure 33: NTSC 100 IRE Flat Field, Field Square Wave, and Bounce (High)
Figure 34: NTSC Black Burst
TSG 95 Pathfinder User Manual
61
Appendix A: Characteristics
Figure 35: NTSC 5-Step Staircase (Gray Scale)
Figure 36: NTSC Multiburst
62
TSG 95 Pathfinder User Manual
Figure 37: NTC7 (NTSC) Composite
Appendix A: Characteristics
Figure 38: NTC7 (NTSC) Combination
TSG 95 Pathfinder User Manual
63
Appendix A: Characteristics
Figure 39: FCC (NTSC) Composite
Figure 40: NTSC Cable Multiburst
64
TSG 95 Pathfinder User Manual
Figure 41: NTSC Cable Sweep
Appendix A: Characteristics
Figure 42: NTSC SIN(X)/X
TSG 95 Pathfinder User Manual
65
Appendix A: Characteristics
Figure 43: NTSC Matrix
Figure 44: NTSC 0 IRE No Burst
Figure 45: NTSC Bounce (Low)
66
TSG 95 Pathfinder User Manual
Appendix A: Characteristics
NTSC JAPAN (No Setup) Waveform Diagrams
Figure 46: SMPTE (NTSC) Color Bars, No Setup
TSG 95 Pathfinder User Manual
67
Appendix A: Characteristics
Figure 47: NTSC 75% Color Bars, No Setup
Figure 48: NTSC Red Field, No Setup
Figure 49: NTSC Black Burst, No Setup
68
TSG 95 Pathfinder User Manual
Appendix B: Replaceable Parts
The following replaceable parts for the TSG 95 Pathfinder are available through your local T ektronix, Inc. field office or representative.
It is important when ordering parts to include the following information in your order: Part number; instrument type and number; instrument serial number; and modification number, if applicable.
DescriptionTektronix Part No.
Instructions (card)070-8915-xx
Service Manual (Optional accessory)070-8917-xx
Rechargeable Battery Pack (Optional accessory)119-4488-00
Carrying Pouch016-1229-00
AC Adapter119-4538-01*
Case Assembly, Top614-0925-00
Case Assembly, Bottom614-0913-00
Stand, Black Vinyl Plastic386-6787-01
Battery Door200-4075-00
LCD Display119-5566-00
Rear Panel Assembly 333-4065-00
Fuse 2.0A, 125V, Slow Blow159-0378-00
* The U.S. standard adapter. See your Tektronix representative for
other adapters.
TSG 95 Pathfinder User Manual
69
70
TSG 95 Pathfinder User Manual
Appendix C: User Service
Battery Hints
For optimal battery life and capacity, use the rechargeable NiCad
battery pack (T ektronix p/n 119-4488-00) in full charge/discharge
cycles. In other words, fully discharge the battery pack before recharging, and then charge the battery pack until fully charged,
approximately 16 hours. A new battery pack will take a few charge/
discharge cycles to reach full capacity.
WARNING. Install or replace batteries only with the instrument
switched OFF and the AC adapter disconnected.
Replace the batteries only with standard AA batteries (1.2–1.5 V,
nominal), or with the optional rechargeable battery pack.
Setting the Auto Power Down (page 18) and Battery T ype (page 19)
functions in the diagnostic menu also have an impact on battery life.
The battery types are disposable (Alkaline) or rechargeable (NiCad).
Setting the battery type changes the voltage thresholds for both the
BATTERY LOW display message and low-battery shutdown.
The BA TTERY LOW Message
The warning “BATTERY LOW” will appear on the second line of
the TSG 95 display when the battery voltage drops below a predetermined level. The level depends on the Battery T ype set in the Diagnostic menu (see page 19). The TSG will operate for approximately
ten minutes after the message first appears. For best results, replace
or recharge the batteries when you first see this warning.
Low Battery Shutdown
To prevent erratic operation at very low power levels, the TSG95
will shut itself down if the battery voltage drops below a second,
lower threshold that also depends on the Battery T ype setting.
Low-battery shutdown can happen with little or no warning if, for
instance, the instrument has been left on by mistake with Auto Power
TSG 95 Pathfinder User Manual
71
Appendix C: User Service
Down disabled. In such cases, the TSG 95 is likely to shut itself
down almost immediately the next time you switch it on. If this happens:
h Install fresh batteries or operate the instrument with the AC
adapter, and
h Confirm that the Utility menu Battery T ype setting is ap-
propriate.
The shutdown threshold is higher for rechargeable batteries than for
disposable. Therefore, you will receive a false BATTERY LOW
message and may experience premature shutdown if using Alkaline
batteries when the Battery T ype is set to “rechargeable.” On the other hand, NiCad batteries may be damaged—they can lose their “rechargeability”—if they are discharged to the TSG95 threshold for
disposable batteries. Be sure to select the correct Battery T ype.
Preventive Maintenance
Under average conditions, the TSG 95 should receive preventive
maintenance every 2000 hours. This is approximately one year of
operation. Preventive maintenance includes cleaning, visual inspection, a performance check and, if necessary, calibration. See the Service manual for performance verification and adjustment procedures.
72
CAUTION. The TSG 95 case is made of molded plastic. Do not allow
water to get inside any enclosed assembly or component. Do not
clean any plastic materials with organic cleaning solvents—benzene,
toluene, xylene, acetone, or similar compounds—because they may
damage the plastic.
TSG 95 Pathfinder User Manual
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