SFM — Seismograph Field Module

Host Port

Serial —

Firmware —

Sample rate —

Record time —

Trigger —

Events —

Project —

Client —

Operator —

IDLE

Battery —

Memory total —

Memory free —

Ready — enter device host and click Connect.

Connect to a device to view its information.

Tran

—

Vert

—

Long

—

MicL

—

PVS

—

No waveform loaded

Recording

Recording Mode

Sample Rate

Histogram Interval

Only active in Histogram / Histogram + Continuous mode

Record Time (seconds)

Waveform capture duration per trigger event

Trigger Level — Geo (in/s)

Recording starts when any geo channel exceeds this level

Alarm Level — Geo (in/s)

Alarm flagged when any geo channel exceeds this level

Maximum Range — Geo

Geophone sensitivity (applies to Tran / Vert / Long channels)

Project Info

Project

Client

Operator

Sensor Location

Notes

Auto Call Home

Enable Auto Call Home

Dial String

Read from device — not writable via this interface

When to Call

After Event Recorded

At Specified Times

Scheduled Call Times

Time Slot 1

Hour (0-23) and minute (0-59). Avoid value 3 (DLE limitation).

Time Slot 2

Hour (0-23) and minute (0-59). Avoid value 3 (DLE limitation).

Retry Settings (read-only)

Number of Retries

Time Between Retries (s)

Wait for Connection (s)

Warm-up Time (s)

Device State

Fast probes — POLL plus one read each, about 2 s. None of these walk the event chain.

Actions

Stop Monitoring

Halts recording. On a unit triggering continuously, this is what breaks the call-home loop.

Disable Auto Call Home

Stored events are left untouched (rescue?erase=false). The unit stops dialing out until ACH is re-enabled.

Erase All Events

⚠ Permanent, and resets the event chain to key 0x01110000. Download anything worth keeping first.

Unresponsive Unit

The escalation ladder from docs/runbooks/wedged_unit_recovery.md, for a unit too busy to answer normal request/response. Prefer Method A — point the modem at an ach_server and answer its call — before racing it with these.

Slow drip (one held session, a stop every 3 s)

Success is bytes_received > 0. A full duration with send_error: null is not success on its own.

Blind stop (fire-and-forget, one attempt)

Event

Waveform

Event

Peaks

Project

Source / files

Review (editable)