Sokkia GSR2700 IS, Operation Manuals, Page: 70 / 87

Appendix A
GSR2700 IS Operations Manual 59
Serial EIA/TIA-232-E
Baud Rate • COM 1: 4800, 9600 (default), 19200, 38400,
57600, 115200, 230400, 460800, 921600
• COM2: 4800, 9600 (default), 19200, 38400,
57600, 115200, 230400
Serial signals
supported TX, RX, RTS, CTS
Wireless interface Bluetooth v1.1
USB USB version v1.1
Input/Output Strobes
PPS Output
i
A one-pulse-per-second time synchronization
output. This is a normally high, active low pulse (1
ms ± 50 ns) where the falling edge is the reference.
Mark Input
j
An input mark (negative pulse
>
55 ns), time tags
output log data to the time of the falling edge of the
mark input pulse.
The electrical specifications of the strobe signals are as follows:
Output • Voltage: Standard TTL levels
• Sink Current: 64 mA
• Source Current: 15 mA
Input • Voltage: Standard TTL levels
• Current:
≤
5 mA
Classifications
FCC and CE Complies with the radiated and conducted emission
limits for a Class B digital device, for both CISPR
and Part 15 of the FCC Rules. For full details, see
GSR2700 IS FCC and CE Notice , page ii.
a. Shock specifications based on receiver without cables attached.
b. Typical value. No almanac or ephemeris and no approximate position or time.
c.
Typical value. Almanac saved and approximate position and time entered. No recent
ephemeris.
d. Typical value. Almanac and recent ephemeris saved and approximate position and
time entered.
e. Accuracy depends on number of satellites used, obstructions, satellite geometry
(DOP), occupation time, multipath effects, atmospheric conditions, baseline length,
survey procedures, and data quality. 95% confidence level. Baseline not exceeding 10
km (except for Static survey type).
f. 1 sigma.
g. Time accuracy does not include biases due to RF or antenna delay.
Table 17: GSR2700 IS Technical Specifications (continued)