Approved by the Royal Spanish Athletics Federation (RFEA) · IAAF rulesApproved by the RFEA · IAAF rules +34 600 889 809
Cronomach — Timing equipment
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SI91-4/8 · SOFTWARE V10.2

Every chip. Every millisecond.

The SI91 turns a fixed UHF RFID reader into a complete timing system: real-time reading on up to 8 antennas, instant results, automatic backups and checkpoints that run on their own.

Finish, Laps and Mass startInstant TXT resultsUnattended operationRFEA approved
PRICE
3.500 € 4 ant. · 4.500 € 8 ant.
SI91 V10.2 — carrera.txt READER CONNECTED
00:42:17
ANT 1ANT 2ANT 3ANT 4ANT 5ANT 6
NºDORSALANT.TIEMPO
00012810420200:42:09.381
0001273180100:42:05.904
000126770300:41:58.112
00012522100100:41:52.660
000124950400:41:47.027
▶ START ❚❚ PAUSE ■ STOP
8
antennas per reader
33dBm
adjustable power
1ms
time resolution
3
timing modes
4
interface languages
TIMING MODES

One software, any event

Fun runs, lap circuits or mass starts: choose the mode and the SI91 automatically applies the right recording rules.

01

Finish

Each chip is recorded only once. Ideal for finishes and intermediate points.

  • —Debounce to prevent duplicate reads
  • —Net time from the start time
  • —New reads highlighted in green
02

Laps

Records every pass of the runner through the arch after a configurable minimum time.

  • —Minimum time between laps (h:mm:ss)
  • —Optional lap limit per bib
  • —Bib card with the time of every lap
  • —TXT export per lap
03

Mass start

Keeps each bib’s last pass through the start with the time of day.

  • —Clearly visible clock in START mode
  • —Actual passing time for every participant
  • —Consolidated final file on completion
RFID READING

Reliable reading from start to finish

Network connection to the reader, full control of antennas and power, and automatic recovery if anything fails during the race.

01

Up to 8 antennas

On-screen activity indicators for each antenna. Enable or disable any of them individually.

02

Adjustable power

From 3 to 33 dBm, adjustable on the fly without stopping reading. Match the range to the arch or the mat.

03

EPC filters on the reader

Filter your event’s chips by prefix. The reader itself discards chips that aren’t yours before sending them.

04

Automatic chip-to-bib

Configurable conversion of the chip code into a bib number (cronomach and TS modes) and a manual mapping table.

05

Auto-reconnect

If the cable comes loose or the reader restarts, the SI91 reconnects by itself and resumes reading without losing the session.

06

Connection cleanup

Release locked reader sessions with one click, without restarting the computer or the reader.

07

Disconnection alert

A periodic audible alert sounds while the reader is disconnected, so you know even when you’re not watching the screen.

08

Reader test

Quick 4-second test that shows the chips read. Check antennas and power before the start.

DATA AND RESULTS

Your times, always safe

Every read is instantly saved to disk, replicated and uploaded to your server. If anything is corrected, it’s logged.

01

Real-time TXT

Every time record is written instantly to a file compatible with the cronomach system, ready for your results software.

02

Automatic backups

When you start a new event, the previous file is kept as _1, _2… A race is never overwritten.

03

FTP upload

Periodic upload of the TXT to your server, with a button to test the connection and a status indicator for each upload.

04

Second copy

Identical mirror in another folder, network drive or USB, every few seconds and independent of FTP.

05

Time record correction

Search for a bib, edit its time, change the order, delete or lock reads. Add manual time records with their time.

06

Change history

Deleted or locked time records are kept in a history: restore them whenever you want or export them to TXT.

07

Race time

Set the start time or elapsed time, and shift all times at once from a reference time record.

08

Session protection

The program can’t be closed while the clock is running. Resume a previous session with all its time records.

SAMPLE TXT FILE
Nº      PC  DORSAL            ANT  TIEMPO
000001  21  0000000000000094  03   00:00:05.015
000002  21  0000000000001042  01   00:00:07.248
000003  21  0000000000000318  02   00:00:09.733
Nº ordenPC checkpointDORSAL 16 digitsANT antenaTIEMPO HH:mm:ss.fff
REMOTE MODE NEW

Checkpoints that run on their own

Place a unit at an aid station, an intermediate point or the finish and control it with a simple button or from your phone. No keyboard, no mouse and nobody in front of the screen.

  1. 01

    Power on

    The computer boots and the SI91 opens automatically with Windows.

  2. 02

    Press

    One button connects the reader and starts reading right away.

  3. 03

    Read

    Each chip is recorded with the time of day the participant passed.

  4. 04

    Finish

    Hold the button down to close the session. The file is ready.

All with a single button

A push button, a USB joystick or an arcade button panel is all you need to control the whole event.

1 press · Start
Starts a new timing session or resumes paused reading.
2 presses · Pause
Stops reading without closing the session.
Hold 5 s · Finish
Closes the session and leaves the results file finished.

Automatic start with Windows

Enabled with a checkbox, no administrator rights required. The program opens on its own when the computer is switched on.

Joystick or wired push button

Any driverless USB controller, or a push button or relay connected to the COM port. Also works with two buttons or a switch.

Control from your phone

Run the unit from your phone without going near the computer.

Time = time of day

When started with the button, each read records the exact time of passage, perfect for intermediate checkpoints.

Always starts fresh

Each start saves the previous file and opens a new one. No event ever gets mixed up with the last.

Disconnection-proof

If the reader doesn’t respond, it retries on its own. If you unplug the controller, it recovers when you plug it back in.

BUILT FOR THE OUTDOORS

Readable in full sun

The display adapts to your workspace: tent, van, finish table or projected screen.

  • ✓High-contrast mode: black background, white text and large font.
  • ✓Adjustable font size from 10 to 32 px, with a bold option.
  • ✓New reads highlighted in green for a few seconds.
  • ✓Automatic return to the latest records if the operator stops browsing the list.
  • ✓Settings summary at startup to check everything before the start.
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SPECIFICATIONS

Requirements

OPERATING SYSTEM
Windows 7, 8, 10 and 11 (64-bit)
PLATFORM
.NET Framework 4.8 (included in Windows 10 and 11)
READER
Compatible fixed UHF RFID reader, EPC Gen2, network-connected (direct Ethernet or switch), up to 8 antennas
OUTPUT FORMAT
Tab-separated 5-column TXT, compatible with cronomach
RESULTS UPLOAD
Automatic FTP and a second copy to a local, network or USB folder
REMOTE CONTROL
USB joystick or controller (no drivers) or COM port / USB-RS232 adapter with dry contact
LANGUAGES
Spanish, English, French and Portuguese

Time your next event with the SI91

We’ll show you the system in action and help you set it up for your event.