Campbell Scientific TX320 Transmitter - Manual (Page 24)

TX320 Transmitter
Transmit Power: 5.6 W for 300 bps, 11.2 W for 1200 bps
Frequency Range: 401.701 MHz to 402.1 MHz
Frequency Stability
Initial
Accuracy:
Short-Term Drift:
Aging:
Vcc + Temperature:
±20 Hz disciplined to GPS
±0.04 Hz/s
±0.1 PPM/year
±0.1 PPM
Channel Bandwidth: 1.5 kHz (300 bps); 3 kHz (1200 bps)
Time Keeping: Initial setting accuracy: ± 100 µs
synchronized to GPS; Drift ± 10 ms/day
over operating temperature range; GPS
scheduled updates are one at power up and
once per day there after. Once every 28
days required for continual operation.
GPS Antenna: 3.3 V active; SMA female connector
RS-232 Serial Port
Signal
Levels:
Connector:
DCE
Command protocols:
RS-232C
DB9F
ASCII, binary, field diagnostics,
dataloggers with RS-232 port
USB Port
Connector:
Command
protocols:
Type B
ASCII, binary, field diagnostics
CS I/O Port
Signal
Levels:
Command Protocol:
TTL, Connector DB9M
Campbell Scientific Synchronous Device
Communication, address 4, Binary
Command, Campbell Scientific
Dataloggers
Environmental: Operating: –40 ° to 60°C; Storage –55º to
70ºC; 0 to 99% RH, non-condensing
Dimensions (with connectors): 17.0 H x 24.9 L x 5.3 W cm
(6.7 in x 10.6 in x 2.1 in)
Dimensions (without
connectors):
15.8 H x 24.9 L x 5.3 W cm
(6.2 in x 9.8 in x 2.1 in)
Weight: 1.02 kg (2.25 lb)
Emission Designators
@ 300 bps:
@
1200 bps:
300HG1D
1K20G1D
Current Drain @12 Vdc
Idle or Sleep:
Transmission:
GPS
Fix:
5 mA
2.6 A
80 mA to 15 mA per day
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