SeekTech SR-20
Operating Environment
Temperature................-4°F to 122°F (-20°C to 50°C)
Humidity ......................5% to 95% RH
Storage Temperature .....-4°F to 140°F (-20°C to 60°C)
Default Settings
The default settings for the locator are:
• Measured Depth units = Feet & Inches,
• Volume = 2 (two settings above mute),
• Proximity Threshold = 30 feet (10m)(Trace)
• 33 kHz (Active Line Trace Mode)
Standard Equipment
Catalog
No.
Description
21893
SR-20 Locator
12543
Markers and Mast Holder
—
Operator's Manual
—
4 C-cell batteries (alkaline)
—
Training Video (DVD)
Optional Equipment
Catalog
No.
Description
12543
Additional Pole/Sonde Markers
21898
ST-305 Transmitter
21903
ST-510 Transmitter
20973
Inductive Clamp (4.75")
16728
Remote Sonde
19788
Float Sonde (package of 2)
4
Frequencies
The following table shows the frequencies available in the
SR-20. The default frequencies shown are in Checked-
Active status in the instrument as shipped. Optional fre-
quencies may be added to the activated set as described
on page 25.
Default Frequencies
Active Line Trace.......128Hz, 1kHz, 8kHz, 33kHz
Power Line Trace ......60Hz (9th), <4kHz
Radio Frequencies ....Low (4-15kHz),
Radio Frequencies
Optional Frequencies
Sonde ........................16Hz, 512Hz, 640Hz,850Hz
Passive Line Trace.....50Hz, 50 Hz (5th), 50Hz (9th)
...................................60Hz, 60Hz (5th), 100Hz,
...................................120Hz
Exact Frequency Values (SR-20)
Sonde
Active Line
Trace
Passive Line
Trace
Ridge Tool Company
....High (>15kHz)
8kHz,16kHz, 33kHz
16 Hz
16.0
512 kHz
512.0
640 Hz
640.0
850 Hz
850.0
8 kHz
8192
16 kHz
16384
33 kHz
32768
128 Hz
128.0
1 kHz
1,024.0
8 kHz
8,192.0
33 kHz
32,768.0
50 Hz
50
50 Hz (5th)
250
50 Hz (9th)
540
60 Hz
60
60 Hz (5th)
300
60 Hz (9th)
540