---
title: "Front and Rear Panel Overview"
slug: "upmax-front-and-rear-panel-overview"
updated: 2024-11-06T07:04:08Z
published: 2024-11-06T07:04:08Z
canonical: "docs.telosalliance.com/upmax-front-and-rear-panel-overview"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.telosalliance.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Front and Rear Panel Overview

A brief overview of the front and rear panel controls and connections.

## UPMAX ISC Front Panel

![Figure1 - UPMAX ISC front panel](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/(19)(2).png?sv=2026-02-06&spr=https&st=2026-11-07T18%3A28%3A38Z&se=2026-11-07T19%3A28%3A38Z&sr=c&sp=r&sig=F3pWXwkECq6Jp5Gb2Tda5U7vXhuVg2LSp7vrqc4%2Fw3c%3D)

Figure1 - UPMAX ISC front panel

UPMAX ISC front panel features include:

- **Reset button** for restarting the unit from the front panel (1A)
- **Four status LEDs** indicating the **status of each power supply** (1B, 1C) the **overall status** of the unit (1D), and **sync** for the reference clock (1E).
- A **color LCD display** to show status and basic configuration parameters (1F)
- A **five-button navigation cluster** with Left, Right, Up, and Down arrows plus a green “OK” button (1G)
- A **USB port** used for software updates (1H)

Basic configuration and status monitoring can be performed using the front panel controls as outlined in the [Installation and Initial Setup Using the Front Panel Interface](/v1/docs/installation-and-initial-setup-using-the-front-panel-interface) section. Connecting to UPMAX ISC via the web-based user interface -covered in the [Remote User Interface](/v1/docs/upmax-remote-user-interface) section - provides easier navigation and full control of the unit.

## UPMAX ISC Rear Panel

![Figure 2 - UPMAX ISC rear panel](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/(9)(4).png?sv=2026-02-06&spr=https&st=2026-11-07T18%3A28%3A38Z&se=2026-11-07T19%3A28%3A38Z&sr=c&sp=r&sig=F3pWXwkECq6Jp5Gb2Tda5U7vXhuVg2LSp7vrqc4%2Fw3c%3D)

Figure 2 - UPMAX ISC rear panel

The rear panel of the UPMAX ISC contains the following connections:

- Two **RJ-45 Gigabit Ethernet connections**, one for network remote control (2A) and one for AES67 I/O (2B)
- Two independent **3Gb/s HD/SD-SDI inputs and outputs** (2C) on female BNC connectors
- **Quad-Link SDI** or **MADI I/O** (2D) - optional
- Five **AES-3 I/O** connections (2E) on female BNC connectors
- Parallel **GPI/O control port** (female DB-15) for five inputs and five outputs (2F)
- Two **IEC power inlets** for the redundant internal universal auto-ranging power supplies (2G)

### SDI I/O

Two sets of 3Gb/S HD/SD-SDI inputs and outputs are included. At this time, however, only the connectors closest to the RJ-45 Ethernet connectors are active. The second SDI connection will be enabled in an upcoming firmware update.

### AES-3 I/O

The top row of AES-3 connectors are inputs. The outputs comprise the bottom row. Connectors are arranged as follows:

- 1/2 = Left/Right (L/R)
- 3/4 = Center/LFE (C/LFE)
- 5/6 = Left Surround/Right Surround (Ls/Rs)
- 7/8 = Left Front Height/Right Front Height (Tfl/Tfr)
- 9/10 = Left Rear Height/Right Rear Height (Tbl/Tbr)

### GPI/O

The active state for GPI is Low and is internally pulled up through a 10K ohm resistor. The active state for GPO is Low and is current-limited through a 33-ohm resistor.

The pinout for the DB-15 sub-connector is as follows:

| **Pin Number** | **Function** | **Comment** |
| --- | --- | --- |
| 1 | +5v |  |
| 2 | GPI In 1 | Active Low |
| 3 | GPI In 2 | Active Low |
| 4 | GPI In 3 | Active Low |
| 5 | GPI In 4 | Active Low |
| 6 | GPI In 5 | Active Low |
| 7 | GND |  |
| 8 | GND |  |
| 9 | +5v |  |
| 10 | GPO Out 1 | Active Low |
| 11 | GPO Out 2 | Active Low |
| 12 | GPO Out 3 | Active Low |
| 13 | GPO Out 4 | Active Low |
| 14 | GPO Out 5 | Active Low |
| 15 | Status OK | Active High |