Horita PTG Portable SMPTE Time Code Generator With 2

Horita PTG Portable SMPTE Time Code Generator With 2
Horita PTG
Portable SMPTE Time Code Generator
With 2-Line LCD Display
Operating Instructions
For Software Version V2.0
Doc. No. 073138-00 Rev. D
© Copyright 2013, HORITA CO., INC.
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Table of Contents
TITLE
PAGE
1 GENERAL
1.1 FEATURES
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2 CONNECTING THE PTG
2.1 Installing and Removing the Battery
2.2 Connecting Time Code IN
2.3 Connecting Video IN
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3 OPERATING THE PTG
3.1 Basic Operation
3.2 Power ON/OFF
3.3 Liquid Crystal Display (LCD)
3.4 Modes of Operation
3.5 Reader Mode
3.5.1 Reading Time Code
3.5.2 Reading GPS Data
3.6 Generator Modes
3.6.1 Manual Mode
3.6.2 Auto Jam Mode
3.7 Setup Mode
3.8 Main Setup Menu
3.9 Time Code Setup Menu
3.10 User Bits Setup Menu
3.11 System Setup Menu
3.12 LED Operation
3.13 Low Battery
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4 SERVICE AND TROUBLESHOOTING
4.1 Service
4.2 Troubleshooting
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5 SPECIFICATIONS
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1 GENERAL
This document provides instructions for operating the Horita PTG Portable Time Code Generator. Intended
for portable use in the field, the Horita PTG is a low cost, palm-sized, battery operated miniature
SMPTE/EBU longitudinal (or linear) time code (LTC) reader/generator. The PTG has a 2-line LCD display
which shows time code and user bit values, as well as setup information.
When reading time code the PTG automatically determines and displays the frame rate of the incoming
code. When generating time code, the PTG can be configured to automatically “jam sync” to an externally
applied TC signal or to the serial data from a GPS receiver. The PTG can also be used in a manual
“run/stop” mode of operation. LTC is generally referred to simply as time code, abbreviated TC.
1.1 FEATURES
•
Reads and generates SMPTE time code at six frame rates of 23.976FPS, 24FPS, 25FPS, 29.97FPS
DF (Drop Frame), 29.97FPS NDF (Non-Drop Frame) and 30FPS (FPS = frames-per-second).
•
Provides selection of “LINE” or “MIC” output level when generating time code.
•
Time code generator “auto jam” mode presets the generator to TC or to GPS serial data input
values for time and date. Once jammed, generator operation continues and can be stopped only by
powering the PTG off. This prevents accidentally stopping the generator via unintended actuation
of the “run/stop” switch.
•
The low “free run” drift rate of a maximum of one frame per hour over temperature provides close
matching of PTG time with that of the jam source time throughout the day. Actual drift rate is
much better than one frame per hour if the PTG is not subjected to large temperature changes,
such as from being left in the sun or out in freezing conditions.
•
GPS jam mode can auto select and operate from three different GPS NMEA message input
formats.
•
Frame rate of generator output does not have to match that of TC reader jam input (can “cross
jam").
•
Manual generator mode allows user to operate PTG manually using front panel “run/stop” switch.
•
Time code reader mode displays time code, user bits, and frame rate values when reading time
code, or GPS time and date values when reading GPS data.
•
Auto power off after 15 minutes if not reading time code or GPS data when in reader or auto jam
mode. User settable auto power off after 1-to-8 hours of generator operation when generating time
code.
•
Simple to use setup menus for time code, user bits, and system mode are easy to understand.
•
All setup information is retained in non-volatile memory, even if battery removed.
•
2-line x 16 character LCD display shows time code, user bits, frame rate, setup information, lowbattery condition, and provides for “contrast” adjustment.
•
Includes an 18” RCA-to-RCA-cable for time code in and out, a BNC adapter to connect to LINE
level BNC time code I/O’s, and XLR and 1/8” mini phone male adapters for using with those type
microphone inputs.
•
Operates for over 24 hours from a single 9V alkaline battery.
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2.0 CONNECTING THE PTG
2.1 Installing and Removing the Battery
NOTE:
Be sure to observe battery polarity. If the battery is installed with the polarity reversed, the PTG will not
operate, but no damage will be done.
Slide open and remove the battery compartment cover to install a new 9Volt battery. Install the battery
terminal-end first, pushing the battery against the battery clips and case until the battery snaps into the
compartment. Install the cover.
To remove the battery, remove the cover and use a small screwdriver or other object to pry the battery out
of the compartment, terminal-end first.
Alternatively, tap the PTG against a flat surface until the battery comes out. This can usually be done with a
single, sharp rap.
2.2 Connecting Time Code IN
To read time code or to “jam” the PTG, connect an RCA cable from the time code output of your
camcorder, VCR, or other device, to the PTG TC I/O SERIAL input. The PTG can work with time code
input levels ranging from 0.5 volts P-P (peak-to-peak) to 10 volts P-P. If your system uses BNC or XLR
connectors for the time code, you will have to use BNC-to-RCA or XLR-to-RCA adapters. Some common
adapters are included with the PTG, but others are available from Horita or at most electronic supply stores,
such as Radio Shack, should the need arise.
2.3 Connecting Video IN
The PTG accepts a video reference for the time code generator if it is desired to genlock the time code
output to a video reference. When genlocked, the time code signal does not drift in time or phase relative to
the video signal. Standard 1V P-P NTSC RS-170A composite video will lock up all varieties of 29.97 time
code frame rates, while PAL 625/50 composite video will lock up 25FPS time code. 30FPS black and white
RS170 composite video will lock up 30FPS time code. Connect the output from the video source to the
VIDEO IN BNC on the PTG.
Note that the PTG does not terminate the video input and although the PTG will operate with an unterminated video input, for most reliable operation the video reference should be terminated at the PTG if
not terminated elsewhere. This can be done by using a either a “T” connector and 75 Ohm terminating
resistor or an “inline” type 75 Ohm terminator at the PTG VIDEO IN input.
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3 OPERATING THE PTG
3.1 Basic Operation
A single miniature toggle switch labeled ON (SET) - R/S (SEL) is used to operate the PTG. The PTG TC
I/O SERIAL IN connector is used for both input and output of time code (I/O means Input/Output), as well
as for input of RS232 serial data from a GPS receiver. The basics are that the PTG is powered on, time
code or GPS data is applied to the TC I/O connector (if in reader or auto-jam mode), the PTG jams to the
incoming time code, then the time code input is disconnected and the “TC I/O” output is connected to the
time code input of the destination device.
3.2 Power ON/OFF
Momentary actuation of the toggle switch to the ON position powers up the PTG. To save battery life if
accidentally left on, the PTG automatically powers off after about 15 minutes if no time code is applied or
the generator is not started. When in the generator mode, the PTG can be set to automatically power off
after operating for 1-to-8 hours. The PTG can also be manually turned off by selecting "OFF" in the Main
Setup Menu as described in later paragraphs.
3.3 Liquid Crystal Display (LCD)
The liquid crystal display is organized as 2 lines of 16 characters each. When reading and generating time
code, the first line displays the time code value and the second line displays the frame rate and the user bit
values. When a GPS input is applied, the first line displays the GPS time value and the second line displays
the GPS date value. When in “Setup” mode the LCD displays various setup selections and options.
LCD Display
LINE – 1
LINE – 2
Menu Text
RDR XX:XX:XX:XX
GEN
24UB XX:XX:XX:XX
25
29
30
??
Description
Reader mode, XX:XX:XX:XX = time code or GPS time
Generator mode
Generator = 24FPS, XX:XX:XX:XX = user bit or GPS date
Generator = 25FPS
Generator = 29.97 FPS
Generator = 29.97FPS or 30FPS NDF
Reader FPS rate unknown
3.4 Modes of Operation
There are three basic modes of PTG operation, reader (RDR), generator (GEN), and setup. The actual PTG
mode of operation is selected in the system setup menu described in later sections.
3.5 Reader Mode
In reader mode the PTG reads and displays incoming time code or GPS data.
3.5.1 Reading Time Code
When reading time code, the PTG reads at play speed in forward direction and the LED flashes at the frame
rate. The time code value is displayed on line-1, the user bits are displayed on line-2. The frame rate of the
time code input is also displayed on line-2. Either 24, 25, 29, or 30 is displayed for the frame rate. These
numbers mean Frames-Per-Second (FPS). "24" is displayed when reading either 23.976FPS or 24FPS code.
When reading standard SMPTE time code, “29” is displayed (meaning 29.97 FPS) if reading drop-frame
code, “30” is displayed if reading either 29.97FPS or 30FPS non-drop frame code.
When reading time code, the LED flashes at the frame rate.
3.5.2 Reading GPS Data
The PTG can read and automatically select between three different standard NMEA GPS “sentences”:
$GPGGA, $GPRMC, and $GPZDA. The time information is UTC (Greenwich Mean Time), not local time.
The “GGA” message does not have date information, RMC and ZDA do have the date. If you are jamming
the PTG using a GPS input, make sure to setup your GPS receiver to output either ZDA or RMC data if
you want the date in the user bits. If you can only get GGA data, then you can manually preset the user bits
to the date and then set the jam mode to cause the PTG to jam using these “manual” user bits.
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When reading GPS data, line-1 displays the GPS hours, minutes, and seconds time value as
“HR:MN:SC:00”, where HR is the hours, MN the minutes, SC the seconds. Since this is for time code, 00
is the frames value which is set to 00.
Line-2 displays the GPS date value as 00:YR:MO:DY. This Yr/Mo/Dy format for the date is an
international format. If there is no date information in the GPS serial input, then line-2 is set to all zeros.
Usually the GPS data is input as bursts of data, once each second. When reading and displaying GPS data,
the PTG LED flashes as GPS data is received, then stays steady on. This repeats once each second.
3.6 Generator Modes
There are two generator modes; manual “run/stop” (R/S) mode and “auto-jam” mode. In either mode a
video reference may be applied to ensure frame accurate time code. In manual generator mode, the PTG
generates time code according to the time code and user bit setup menu selections. These selections define
the time code frame rate as well as any preset values for the time code or user bit fields.
3.6.1 Manual Mode
When in manual R/S mode, the time code generator is alternately started and stopped by alternately
“clicking” the toggle switch to the R/S position.
3.6.2 Auto-Jam Mode
In auto-jam mode, the PTG jams, or presets, the time code generator to an externally applied time code or
GPS signal. Once jammed, the PTG outputs time code according to the data input in the time code and user
bit setup menus. Once the auto jam mode has been selected and the PTG has been jammed, the mode of
operation cannot be changed until the PTG is powered off and then on again. Note that the frame rate can
be changed after the PTG has jammed. The PTG always jams on frame 00 to maintain best accuracy.
If multiple PTGs are to be jammed to GPS time it’s more accurate to first jam one of them to the GPS,
then, after it starts generating time code, use its time code output as the jam source for the other PTGs. This
way they will all be set to exactly the same time relative to each other. Otherwise, because the GPS time
data is not always output at the same time relative to the start of each new GPS second, their times would
not match as close if they were each individually jammed to the GPS data.
3.7 SETUP Mode
The SETUP mode allows the user to change operation of the PTG between reader and generator modes,
change the generator frame rate, etc.
3.8 Main Setup Menu
The Main Setup Menu allows selection of various sub-menus in order to configure operation of the PTG
according to meet a specific application or user preference. To enter the Main Setup Menu, hold the toggle
switch in the ON position for approximately 2 seconds or until the Main Setup Menu is displayed along
with a flashing black cursor on one of the selectable menu options.
After the Main Setup Menu is displayed, momentarily actuating the switch to the ON position moves the
cursor to highlight a different menu selection. Actuation of the switch to the SEL position then selects the
highlighted option. The following selections are available on the Main Setup Menu:
LCD Display
LINE-1
LINE-2
Menu Text
OFF:N TC UB SYS
EXIT:N
Menu Selection
OFF
TC
UB
SYS
Menu Selection
Description
Powers the PTG OFF
Enters the Time Code Setup Menu
Enters the User Bits Setup Menu
Enters the System Setup Menu
Description
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Menu Selection
EXIT
Description (cont.)
Exits SETUP Mode, saves setup info and
returns to the time code/user bit display
3.9 Time Code Setup Menu
The Time Code Setup Menu allows the user to preset the time code generator starting value (when in
manual generator mode) and to select the frame rate of the time code generator output.
To enter the Time Code Setup Menu, select TC from the Main Menu. Momentary actuation of the toggle
switch to the SET position moves the cursor from one time code field to the next; clicking the switch to the
SEL position modifies the data in the currently highlighted field. After cycling through the time code fields,
the FPS (frames per second) field is active. Clicking SEL cycles through the available frame rates of
23.976, 24, 25, 29 DF (drop frame), 29.97NDF (non-drop frame), and 30 NDF (non- drop frame) frames
per second. The Time Code Setup Menu is described below:
LCD Display
LINE-1
LINE-2
Menu Text
PRE=XX:XX:XX:XX
GEN FPS=XX
Menu Selection
Description
PRE=XX:XX:XX:XX Allows preset of time code values from 00:00:00:00 to 23:59:59:29
GEN FPS=XX
Allows selection of frame rate of time code output
23.976
23.973 FPS
24
24FPS
25
25FPS
29.97 DF
29.97FPS drop frame
29.97NDF
29.976FPS non-drop frame
30 NDF
30FPS non-drop frame
DF = Drop-Frame, NDF = Non Drop-Frame
To return to the main menu while in the FPS field, click the switch to the SET position.
3.10 User Bits Setup Menu
The User Bits Setup Menu allows the user to preset the user bits or select how the user bit data is handled
in the different generator modes of operation. More specifically, this menu allows the user to define the
user bits output when the generator is jammed.
To enter the User Bit Setup Menu, select UB in the Main Menu. The user may individually set each user bit
to any number in the range of “00” to hexadecimal “FF”. To preset the user bit data, click the switch to the
SET position to highlight the desired field; click the switch to the SEL position to enter or modify data in
the active field. If desired, an ID number in the range of “00” to hexidecimal “FF” can be assigned to user
bits 8 and 7 to positively identify footage from multi- camera productions. The User Bits Setup Menu is
described below:
LCD Display
LINE 1
LINE 2
Menu Text
UB=XX:XX:XX:XX
ID=XX
Menu Selection
UB=XX:XX:XX:XX
All 00
ID + XX:XX:XX
RDR
ID + RDR
ID=XX
Description
Allows user to manually preset user bits = 00:00:00:00 to FF:FF:FF:FF
Sets all PTG user bits to “00”
Sets PTG user bits 8, 7 to ID, rest of user bits to preset value
Sets PTG user bits to same value as TC reader user bits
Sets PTC user bits 8, 7 to ID, rest of user bits to TC reader value
Allows user to preset an ID number from 00 to FF (hex)
Click the switch to the SET position to exit the ID field and return to the main menu.
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3.11 System Setup Menu
The System Setup Menu allows the user to configure the PTG’s mode of operation. To enter the System
Setup Menu, select SYS from the Main Menu. Actuating the switch to the SEL position cycles through the
various operating modes and allows the user to set the generator automatic power off timer, adjust the
contrast of the LCD, and select the output level. The System Setup Menu is described below:
LCD Display
LINE-1
LINE-2
Menu Text
MODE:RDR
AUT OFF:N CONT:5
Menu Selection
MODE:
RDR
GEN AUTOJAM
Description
GEN MAN R/S
AUT OFF:N
Reads and displays incoming TC or GPS data
“Jamsyncs” generator to incoming TC or GPS data, outputs TC and UB values
according to the time code and user bits setup menus selections.
Manual Run/Stop mode. Uses the preset time code and user bit values.
Actuation of switch to R/S alternately starts/ stops the time code generator.
Automatic power off after 1-to-8 hours of generator operation. N=No,
1,2,3,4,5,6,7,8 = number of hours until generator automatic power off. This is to
help conserve battery life.
NOTE:
The auto off timer is active only in the generator mode of PTG operation. It is
turned off each time the PTG is powered off and needs to be reset each time the
PTG is powered up if it is desired to be used. This is to prevent the PTG from
unexpectedly powering off while actively being used because of a prior forgotten
or unknown setting of the timer.
CONT:5
LEVEL OUT = LINE
LEVEL OUT = MIC
Adjusts contrast of LCD – 0 to 9.
Selects line level time code output of approximately 2.5V P-P, -2dBV.
Selects microphone level time code output of approximately -35dBV. As
compared to the output from a typical microphone, this MIC level is rather
“hot”. This is because it is output as an unbalanced signal in a relatively
noisy environment. However, it is still well within the range of either automatic
or manual microphone input level adjustment and therefore will not “swamp”
microphone input circuits as an un-attenuated LINE level signal does.
Click the switch to the SET position to exit the contrast field and select the 2nd SYS setup menu, which is
for selecting the MIC/LINE output level.
3.12 LED Operation
The red LED on the PTG indicates power on as well as the operational status of the PTG when reading or
generating time code. This is summarized in the following table:
LED State
OFF
Steady ON
Rapid flashing
Slow flashing
1PPS flash
Long 1PPS
Double 1 PPS
Random flash
+
Meaning
Power off
Power on, not reading or generating time code
Reading time code if in reader mode, Generating time code if “running” in
generator manual mode
“stopped” while in manual generator mode
1 pulse-per-second flash means generator “jammed” and running
1 PPS extra long flash occurs at the start of each minute
Double 1PPS flash at each minute indicates also video genlock
Indicates activity on TC/SERIAL input
3.13 Low Battery
When there are only a few hours of battery life remaining, line-2 of the LCD display alternates between
displaying the message “BATT” and the FPS rate.
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4 SERVICE AND TROUBLESHOOTING
4.1 Service
Do not attempt to disassemble your unit to service it. There are no user-serviceable parts inside. You can
return your unit to HORITA for service or repair. Please contact HORITA first before returning your unit.
4.2 Troubleshooting
The following provides a list of the most common items to check if you are having trouble with your unit.
a.
b.
c.
Check for a dead battery
Check all cables in signal paths for opens or shorts.
If using XLR-to-RCA adapters, apply the time code from the RCA connector to an audio monitor
and listen for the “raspy” time code sound. If no time code is present, it may be necessary to
disassemble the XLR adapter and switch the wiring between pins 2 and 3.
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5 SPECIFICATIONS
Battery
9Volt, NEDA/ANSI 1604A
Switches and Indicators
POWER
ON (SET)
R/S (SEL)
Momentary ON-OFF-ON toggle switch
LED
LCD
Red, indicates power ON and flashes when reading or generating time code
Displays 2 lines of 16 characters each
Time Code
Format
Input Level
Impedance
Output Level
Connector
Generator Drift
SMPTE time code format running at frame rates of 23.976, 24, 25, 29.97DF,
29.97/30 NDF, or 30FPS
0.5 to 10 volts p-p (-20dBV to +8dBu)
10K Ohms (approx)
LINE level - approximately 2.5 V P-P (-2dBV/0.22dBu) square wave
MIC level - approximately -35dBV/-33dBu (50mV P-P) square wave, 10K load
approximately -38dBV/-36dBu (35mV P-P) square wave, 1K load
RCA
Not more than +/-1-frame per hour over temperature range
GPS
Input Level
Format
Baud/bits
RS-232
NMEA $GPGGA, $GPRMC, or $GPZDA
4800, 8 bits, no parity
Video
Input Level
RS170A composite NTSC video or equivalent 625/50 PAL video, 0.5 to 2 volts p-p
NOTE: Not terminated by PTG
Environment
Operating
Storage
5-to-40 degrees C (41-to104 degrees F)
-10-to-60 degrees C (14-to-140 degrees F)
Dimensions
1” H, 2.4” W, 4.75” D
Weight
5 Oz, including battery.
Specifications subject to change without notice
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