EVENTOUTCONTROL

Control Event-Out properties

Platform:

OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, SPAN CPT7

Firmware Stream:     

This command configures up to seven Event-Out output strobes. The event strobes toggle between 3.3 V and 0 V. The pulse consists of two periods: one active period followed by a not active period. The start of the active period is synchronized with the top of the GNSS time second and the signal polarity determines whether the active level is 3.3 V or 0 V. The not active period immediately follows the active period and has the alternate voltage.

The outputs that are available vary according to the platform.

A 100 MHz clock is used internally to create these output signals. As a result, all period values are limited to 10 ns steps.

The EVENTOUT outputs cannot synchronize with GPS time until the receiver reaches FINESTEERING time status. As the receiver transitions to GPS time, there may be additional, unexpected pulses on the EVENTOUT signals.

Message ID: 1636

Abbreviated ASCII Syntax:

EVENTOUTCONTROL mark switch [polarity] [active_period] [non_active_period]

ASCII Example:

EVENTOUTCONTROL MARK3 ENABLE

Field

Field Type

ASCII Value

Binary Value

Description

Format

Binary Bytes

Binary Offset

1

EVENTOUT
CONTROL header

-

-

Command header. See Messages for more information.

-

H

0

2

mark

MARK1

0

Choose which Event-Out Mark to change. This value must be specified.

Note: On OEM719 and OEM729 receivers, only MARK1 is available.

Note: On OEM7600, OEM7700 and OEM7720 receivers, only MARK1 through MARK4 are available.

Enum

4

H

MARK2

1

MARK3

2

MARK4

3

MARK5

4

MARK6

5

MARK7

6

3

switch

DISABLE

0

Disables the Event output

Enum

4

H+4

ENABLE

1

Enables the Event output

4

polarity

NEGATIVE

0

Negative polarity (active = 0V)
(default)

Enum

4

H+8

POSITIVE

1

Positive polarity (active = 3.3V)

5

active_period

default: 500,000,000
minimum: 10
maximum: 999,999,990

Active period of the Event Out signal in nanoseconds.

10ns steps must be used.

Note: If the value entered is not a multiple of 10, it will be rounded down to the nearest 10 ns.

Ulong

4

H+12

6

non_active_
period

default: 500,000,000
minimum: 10
maximum: 999,999,990

Non-active period of the Event Out signal in nanoseconds.

10 ns steps must be used.

Note: If the value entered is not a multiple of 10, it will be rounded down to the nearest 10 ns.

Ulong

4

H+16

The sum of the active period and inactive period should total 1,000,000,000 ns. If the total exceeds one full second, the active period duration will be as given and the inactive period will be the remainder of the second.

Alternately, the sum of the active and inactive periods may be less than 1,000,000,000 ns, but should divide evenly into 1,000,000,000 ns. For example, if the active period is 150,000,000 and the inactive period is 50,000,000, the sum of the periods is 200,000,000 ns which divides evenly into one full second.

If the sum is less than one full second and not an even multiple, the last active or inactive period is stretched or truncated to equal one full second.

A 100 MHz clock is used internally to create these output signals. As a result, all period values are limited to 10 ns steps.

 

OM-20000167 v12

July 2019

Email comments to NovAtel_TPUBS@NovAtel.com

7.07.01 / OM7MR0701RN0000
PP7 07.07.00 / EP7PR0700RN0000
7.06.02 / OA7CR0602RN0000