TIMTER™ Multi-mode Digital Telemetry Transmitter
75
Quasonix, Inc.
5.
Use a Spectrum Analyzer to determine whether there is a stick at the desired frequency. If there is, go on to
Part 2.
6.
If there is no output, check the state of the RF On/Off pin.
•
If the pin appears to be in the correct state to enable the output, check the RF On/Off pin polarity using
the
RZ
command.
•
If the polarity is incorrect, change it.
•
RZ 1
sets the transmitter output to turn ON when the RF On/Off pin is high (3.3 VDC).
•
RZ 0
sets the transmitter output to turn ON when the RF On/Off pin is low.
7.
Is the output present now? If so, go on to Part 2 below. If not, call Quasonix for technical support.
Part 2: Verifying modulation output on frequency with internal data
1.
Turn on the transmitter.
2.
Set the mode to one of the available modes on your unit. For example,
MO 0
for PCM/FM,
MO 1
for
SOQPSK, etc.
3.
Set transmitter to the desired frequency using the
FR
command. For example,
FR 2200.5
.
•
To see the allowed frequencies on your unit, type
FR ?
.
4.
Turn the soft RF control ON with
RF 1
.
5.
Enable the internal clock source with
CS 1
.
6.
Enable the internal data source with
DS 1
.
7.
Set the internal clock rate to 5 Mbps with
IC 5
.
8.
Set the internal data pattern to PN15 with
ID PN15
.
9.
Use a spectrum analyzer to verify the desired waveform on the RF output at the desired frequency.
10.
If the waveform is NOT present, check the state of the RF On/Off pin. Use the
RZ
command to check the
current polarity of the RF On/Off pin.
•
RZ 1
sets the transmitter output to turn ON when the RF On/Off pin is high (3.3 VDC).
•
RZ 0
sets the transmitter output to turn ON when the RF On/Off pin is low.
11.
Change either the RF On/Off pin or the polarity to turn the RF output ON.
12.
Check for the RF output on the spectrum analyzer.
•
Is the output present now? If so, go on to Part 3.
•
If not, call Quasonix for technical support.
Part 3: Verifying modulation output on frequency with user data
1.
Turn on the transmitter.
2.
Set the mode to one of the available modes on your unit. For example,
MO 0
for PCM/FM,
MO 1
for
SOQPSK, etc.
3.
Set transmitter to the desired frequency using the
FR
command. For example,
FR 2200.5
.
•
To see the allowed frequencies on your unit, type
FR ?
.
Содержание TIMTER QSX-V Series
Страница 39: ...TIMTER Multi mode Digital Telemetry Transmitter 31 Quasonix Inc Figure 22 Baseband Signal Timing ...
Страница 101: ...TIMTER Multi mode Digital Telemetry Transmitter 93 Quasonix Inc Figure 41 Shock Pulse X axis Negative ...
Страница 109: ...TIMTER Multi mode Digital Telemetry Transmitter 101 Quasonix Inc Figure 42 Transmitter Clock and Data Logic ...