Support & User Guide

Everything you need to use Viking Two

A simple, step-by-step guide to the Viking Two app and test device — from connecting your first charging station to sending a finished inspection report. Scroll down, or jump to a topic below.

Getting started

Viking Two is a portable test instrument that lets you safely function-test, troubleshoot and document Mode 3 Type 2 EV charging stations. The device talks to the free mobile app over Bluetooth.

1. Charge the device

Make sure your Viking Two test device is charged. You can check the battery level in the app menu.

2. Install the app

Install the Viking Two app from the App Store (iOS) or Google Play (Android) and allow Bluetooth and Location when asked.

3. Plug into the station

Connect the Viking Two device to the charging station's Type 2 socket, exactly like plugging in a car.

4. Open the app

Turn on the device, open the app, and it will search for your Viking Two automatically.

Permissions The app needs Bluetooth to talk to the device and Location to look up the installation address when you create a report. Location is only used while you are actively creating a report.

Connecting to a Viking Two device

When you open the app it scans for nearby Viking Two devices over Bluetooth.

Select-device screen showing a discovered Viking Two device in a list

1 Pick your device

Any Viking Two devices that are switched on nearby appear in the list (for example Viking_2200634 — the number matches the device's serial). Tap your device to connect.

  • The device name always starts with Viking_.
  • If your device is not listed, make sure it is powered on and within a few metres, then wait a moment for the scan to refresh.
  • Skip this step lets you open the app without connecting — useful if you only want to review or send saved reports.

Good to know The app version is shown at the bottom of this screen.

The live screen

Once connected, the live screen shows real-time information straight from the charging station. This is where you test and troubleshoot.

Live screen with available current gauge, phase indicators, status and cable coding

What you see

Everything updates live while the device is plugged into the station:

L1 · L2 · L3

Phase indicators. A filled circle means that phase is present. This tells you whether the station is single-phase (L1) or three-phase (L1–L3).

Available current

The maximum current the station is offering the car, decoded from the Control Pilot signal — shown together with the duty cycle (%).

Status

The current charging state in plain language, e.g. Vehicle Disconnected, Vehicle Connected or Charging. Tap the ⓘ icon for an explanation.

Cable coding

The cable's rated current and cross-section (e.g. 32 A – 6.0 mm²) read from the plug's coding resistor.

PP signal

The Proximity Pilot signal — shows whether the cable/plug is detected by the station.

Bottom controls

Disconnect, Connect and Charge simulate the car's states. Pilot Fail injects a fault, and the last button switches the simulated cable code.

Frequency page showing the Control Pilot PWM waveform graph

Swipe for the pilot signal graph

Swipe left on the live screen to see the Control Pilot (CP) waveform — a live oscilloscope-style graph of the ±12 V pilot signal and its frequency.

Use it to confirm the station is producing a clean ~1 kHz PWM signal. A distorted shape or an unusual frequency points to a pilot problem.

Tip The small dots below the graph show which page you are on — swipe back to return to the current gauge.

Auto-Test

The AUTO-TEST button runs a guided function test for you — no need to press each control by hand.

Live screen highlighting the Auto-Test button

How it works

Tap AUTO-TEST and the app automatically steps the simulated vehicle through the full sequence:

  • Disconnected → Connected → Charging, just like a real charging session.
  • It watches how quickly the station's contactor closes and which phases go live.
  • It checks the available current the station offers.
  • When done it returns the station to a safe (disconnected) state.

You then get a clear PASS or CHECK INSTALLATION result, with the measured current, number of phases and the time until the phases went live.

Handy If Auto-Test detects three live phases, the app can automatically suggest 3 phases in your report so you don't have to set it manually.

Create an inspection report

The reporting wizard walks you through seven simple steps and then emails a professional PDF report to your customer and/or your own company.

Reporting start screen

Start the wizard

Open Reporting from the menu and tap Start reporting. You can move Next and Previous between steps at any time — your progress is saved automatically as a draft.

Tip You don't need to be connected to a device to fill in or finish a saved report.

Step 1 – performing company details

1 Performing company

Enter your company and technician details: company name, contact person, technician, ZIP, city, phone and email.

Time-saver Turn on Save this info for later and these fields fill in automatically on your next report.

Step 2 – customer details

2 Customer

Enter the customer's details — name, address, ZIP, city, phone and email. The email address here is used if you choose to send the finished report to the customer.

Step 3 – installation address on a map

3 Installation address

Start typing the address and pick it from the suggestions — a map pin confirms the exact location of the charging station. This is stored on the report so the site is clearly documented.

Step 4 – photo of the installation

4 Photo

Take a photo of the charging station or installation, or pick one from your gallery. The photo is included in the PDF report.

Best photo Hold the phone upright (portrait) and make sure the unit and its rating plate are clearly visible.

Step 5 – test measurements

5 Measurements & settings

Record the test details for the installation:

  • Test date, ampere reading and test standard (e.g. Mode 3 – Type 2).
  • Load balancing, grid type (TN/IT/TT) and phases present.
  • Voltage, earth-fault protection, characteristic, surge protection and access control.
  • Optional per-phase voltages (L1/L2/L3) and the measure point.

Auto-fill The app pre-fills the ampere reading from the live test, and can suggest 3 phases when the device has detected them.

Step 6 – inspection checklist

6 Inspection checklist

Work through the yes/no checklist covering the physical inspection — surge protection, earth-fault protection, protection against the environment, visible damage, labelling, socket condition, cable hook, distance from EX zones, continuity and NEK 400 compliance.

Step 6 – a checklist item switched off, revealing a comment field

6 Noting a deviation

If something is not OK, switch that item off. A comment box appears where you describe the deviation (for example "Small damage to chassis, but not important"). All comments are included in the report so nothing is lost.

Step 7 – sending options

7 Send the report

Choose where the finished PDF should go:

  • Send report to customer — emails the report to the customer address.
  • Send copy to performing company — keeps a copy for your own records.
  • Add charging station to this report — reuse the company, customer and address details to quickly document another charger at the same site.

Tap Finish and the report is generated and emailed automatically.

No signal? If you're out of coverage when you tap Finish, the report is saved and queued. It sends itself automatically as soon as you're back online — you never lose a report.

The Viking Two device

A quick guide to the hardware itself — what it does and how to look after it.

What it is

A portable tester that safely mimics an electric vehicle to a Mode 3 Type 2 charging station, so you can function-test without a real car.

How it connects

Plug it into the station's Type 2 socket, then pair it with the app over Bluetooth.

What it reads

Control Pilot duty & frequency (available current), phase presence (L1/L2/L3), cable coding and the proximity (PP) signal.

What it simulates

Vehicle states (disconnected / connected / charging), a pilot fault, and different cable coding values.

Battery

Rechargeable. Check the level in the app menu and recharge when low so it's ready in the field.

Firmware

The version is shown in the app menu. Keep it updated for the latest features and fixes.

Important Viking Two is a function tester: it verifies that the charging station behaves correctly and documents the installation. It does not replace calibrated instruments for formal electrical safety measurements (such as RCD trip tests or insulation resistance) — use your dedicated test equipment for those.

Frequently asked questions

Quick answers to the most common questions. Tap a question to expand it.

Using the app
My device doesn't appear in the list. What do I do?
  • Make sure the device is switched on and its battery isn't flat.
  • Stay within a few metres of the device.
  • Check that Bluetooth is enabled on your phone and that the app has Bluetooth permission.
  • Close and reopen the app to restart the scan, or toggle the device off and on again.
Why does the app ask for Location permission?
Location is used to look up the installation address on the map when you create a report, and is required by the operating system for Bluetooth scanning. It is only accessed while you use the app — it is not tracked in the background.
What does "Available current" mean?
It is the maximum current the charging station is offering to the car. The station signals this through the Control Pilot duty cycle, and the app decodes it into amps. It is not a measurement of the current actually flowing.
What's the difference between Disconnect, Connect and Charge?
These buttons make the device pretend to be a car in different states:
  • Disconnect — no vehicle connected (safe state).
  • Connect — vehicle plugged in but not charging.
  • Charge — vehicle ready and requesting power, so the station closes its contactor.
Auto-Test runs through all of these for you.
What does the Auto-Test result tell me?
Auto-Test runs the full charging sequence and shows PASS when the station brings phases live and offers current within the expected time, or Check installation if it doesn't. It also lists the measured current, the number of phases and how long the phases took to go live.
Do I need to be online to fill in a report?
No. Reports are saved as drafts on your phone, so you can complete them offline. When you send a report without coverage it is queued and delivered automatically once you're back online.
Can I document several chargers at the same site?
Yes. On the final step, turn on Add charging station to this report. When you finish, the company, customer and address details are reused so you can quickly test and document the next charger.
Who receives the finished report?
Whoever you choose on the last step — the customer email, your own company email, or both. The report is generated as a PDF and emailed automatically.
How do I change the language?
Open the menu (☰) and choose Language. English, Norwegian, Swedish and Danish are available, and the app and your reports follow the selected language.
The device
How do I connect the Viking Two device to a charging station?
Plug it into the station's Type 2 socket exactly like you would plug in a car. Then open the app and select the device to pair over Bluetooth.
How do I check the battery and firmware?
Connect to the device and open the menu (☰). The serial number, battery level and firmware version are shown at the top.
What does "Cable coding" show?
Every Type 2 cable includes a coding resistor that tells the station its maximum current rating. Viking Two reads this and shows the rated current and cross-section, e.g. 32 A – 6.0 mm².
What is the PP signal?
PP stands for Proximity Pilot. It's the signal a charging station uses to detect that a cable/plug is connected. Not detected simply means no cable is currently sensed.
Is Viking Two a replacement for a calibrated safety tester?
No. Viking Two is a function tester and documentation tool. It confirms the charging station operates correctly and records the installation, but formal electrical safety measurements (such as RCD trip tests and insulation resistance) should still be done with your calibrated instruments.
How do I look after the device?
  • Recharge it before it goes flat so it's ready in the field.
  • Keep it dry and store it in its case.
  • Keep the firmware updated via the app for the latest improvements.

Still need help?

Can't find what you're looking for? Our team is happy to help.

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