Acutime 2000, Gps antenna for precise timing and synchronization – Trimble Outdoors ACUTIME 2000 User Manual

Page 2

Acutime 2000

GPS Antenna for Precise Timing and Synchronization

External Event Capture

Interface:

RS-422/485 or RS-232

Resolution:

320 nanoseconds

Minimum Pulse Width:

1 microsecond, rising edge on-time

Reporting Mechanism:

TSIP Packet

ELECTRICAL SPECIFICATIONS

Prime Power:

+8 Vdc to +36 Vdc, reverse polarity protection

Power Consumption:

110mA @ 12 volts, 1.2 watts (typical), <1.5 watts max

SERIAL PROTOCOLS

Port Interface Protocols Defaults

TxB (primary)

RS-422/485 or RS-232 TSIP, NMEA TSIP @ 9600, 8-odd-1

RxB (primary)

RS-422/485 or RS-232 TSIP, RTCM TSIP @ 9600, 8-odd-1

TxA (secondary)

RS-422/485 or RS-232 TSIP TSIP @ 9600, 8-odd-1

All ports support baud rates of 300–38,400; 7 or 8 data bits; even, odd, no parity

NMEA messages (default):

ZDA

Available messages:

GGA, GLL, VTG, GSV, GSA, ZDA, RMC

ORDERING INFORMATION

Acutime 2000 GPS Smart Antenna

8-channel, RS-422
12-channel, RS-422

8-channel, RS-232
12-channel, RS-232

Acutime 2000 Starter Kit

(includes 8-channel RS-422 Acutime 2000,
100

interface cable, RS-422/232 converter,

Acutime Monitor software (Win 9x/2000/NT) User Guide

Acutime 2000 User Guide

Acutime 2000 interface cables

(12 conductors, 6 twisted pairs, shielded)

(15m)

100

(30m)

200

(60m)

400

(120m)

For additional information, please visit Trimble’s website at www.trimble.com
and the Acutime 2000 product page for updates, additional tools and
current part numbers.

rimble logo with T

rimble is a trademark of T

rimble Navi

gation Limited registered in the United States Patent and T

rademark Office.

Acutime is a trademark of T

rimble Navigation Limited. All other marks are the property of their respective owners. TID11820-PDF

(1/00)

PHYSICAL CHARACTERISTICS

Dimensions:

6.12" D, 5.0" H (155.5mm x 127.0mm)

Weight:

12.8 oz (363 g)

Connector:

12-pin round, waterproof

Mounting:

1"-14 straight thread

Mechanical Drawing:

ENVIRONMENTAL SPECIFICATIONS

Operating temp:

– 4 0 to +85° C

Storage temp:

–55 to +105° C

Vibration:

0.008 g

/Hz 5 Hz to 20 Hz

0.05 g

/Hz 20 Hz to 100 Hz

–3dB/octave 100 Hz to 900 Hz

Operating Humidity:

95% RH, non-condensing @ 60° C

EMC:

CE, FCC Class B

PERFORMANCE SPECIFICATIONS

General:

L1 frequency, C/A code (SPS), continuous tracking
receiver. Available in 8-channel or 12-channel.

Update Rate:

1Hz

Accuracy:

Dynamic SPS (with S/A) Dynamic DGPS

Position

40m CEP 1.5m CEP

Velocity

0.25 m/s CEP 0.05 m/s CEP

Time to First Fix
(no stored position):

8-channel typical cold start: < 120 seconds
12-channel typical cold start: < 110 seconds

Time to First PPS
(stationary with stored
position, e.g., recovery
after power outage):

<60 seconds

Re-acquisition after
60-second signal loss:

<2 seconds (90%)

Dynamics:

Velocity:

500 m/sec maximum

Acceleration:

4g (39.2 m/sec

)

Jerk:

20 m/sec

PPS output

Physical Interface:

RS-422

Width:

10 microseconds (default). User-programmable
from 10 microseconds to 500 milliseconds.

On-Time Edge:

Rising edge on-time (default). User-programmable
rising or falling.

Resolution:

80 nanoseconds (quantization error reported
through TSIP)

Accuracy (one sigma):

UTC ±60 nanoseconds (static, without S/A)
UTC ±100 nanoseconds (static)
UTC ±300 nanoseconds (dynamic, TDOP

≤

Trimble Navigation Limited
Corporate Headquarters
645 North Mary Avenue
Sunnyvale, CA 94086
+1-408-481-8940
+1-408-481-2202 Fax
www.trimble.com

Trimble Navigation

Singapore PTE Limited

79 Anson Road
#05-02
Singapore 079906
+65-325-5668
+65-225-9989 Fax

Trimble Navigation Europe Limited
Trimble House
Meridian Office Park
Osborne Way
Hook, Hampshire RG27 9HX U.K.
+44-1256-760-150
+44-1256-760-148 Fax

Trimble Navigation

Australia Pty Ltd.

Level 1/123 Gotha Street
Fortitude Valley, QLD 4006
+61-7-3216-0044
+61-7-3216-0088 Fax

5.0" (127.0 mm)

6.12"

(155.5 mm)

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