Pace Di4001NC

Pace Di4001NC

The Di4001NC was a cost reduced cut down version of the Di4001 series of ntl set top boxes. One of the noticeable differences is the removal of the second card slot, in favour of just a single smartcard slot for the smartcard. The second card slot was originally designed for Mondex cashcards, which never launched.

Another removal was the ethernet port, despite the box still having a built in cable modem, the IEEE1284 port has also been removed, along with the audio output

Pace Di4001NC Rear

From left to right:

  • Power Input
  • RF Out – outputs the RF modulator, does not pass through the cable signal
  • TV & VCR Scart
  • IR Input & IR Output – No official function
  • RS232 – No official function
  • Cable Input

The RF output no longer includes an internal combiner, which means you will no longer be able to tune in cable channel’s via the RF tuner. Instead only the modulated output of the set top box will remain. This was due to the intention of removing the analogue channels, and to prevent the DVB-C channels from being tuned in on modern digital TV sets.

Pace Di4001NC mainboard

Well it looks very similar to the Di4001, but on closer inspection you can see the components removed, also in this model there aren’t any stickers covering the various chips.

Pace Di4001 C-Cube AViA

From left to right;

C-Cube AViA-600L – MPEG2 Decoder

C-Cube AViA-GTX – Graphics Accelerator

C-Cube AViA-iNX – Transport Demodulator

Di4001NC

The removal of the ethernet and IEEE1284 controllers, the ethernet port seems to remain but is not wired internally.

Hitachi HD6417709

A closer look at the Broadcom DAVIC processor and the mysterious Pace chip, of which the sticker covered some of it on the previous model. At the very top you can see the main processor, which is unchanged since the previous model (Hitachi SH3)

Hitachi SH-3 HD6417709

Pace 909 6162800, ORBIT 61628

Broadcom QAMLink BCM3120KTB

Engineer Mode

To access, hold the Up/Down buttons upon bootup, and release when DIAG appears on the front panel display.

Pace Di4001NC diag screen

Default frequency settings, this would carry any software updates the STB would download upon boot up

Pace Di4001NC diag screen

Some version numbers, as well as the Network ID. This box appears to be running CR3.2

Pace Di4001NC diag screen

Further information in relation to the software versions on the STB

Pace Di4001NC diag screen

Since this revision lacks the internal combiner, you cannot control the outputted cable feed

Pace Di4001NC diag screen

Service status of the box, indicated that the signal is OK and the regional information

Pace Di4001NC diag screen

Signal information for the current frequency, this is the same frequency as the default frequency

Pace Di4001NC diag screen

Information relating to the DVB-SI, and the amount of services received

CAT – Encryption systems

PAT – Channel numbers

TDT – Updates the time & date

EIT – Event info, current program

Pace Di4001NC diag screen

Information for the inserted smartcard, the credit amount and the pairing status

Pace Di4001NC diag screen

A log of events generated by the STB

Pace Di4001NC diag screen

Signal strength status, but this time for the DAVIC tuner (also known as DVB_RC)

Pace Di4001NC diag screen

Same as above but for the upstream

Pace Di4001NC diag screen

Browser settings, for the Liberate navigator client

Pace Di4001NC diag screen

Current date and time, this cannot be set, but is retrieved from the network stream, the STB has a built in CMOS battery

Bootloader version and flash information

Pace Di4001NC diag screen

Memory information, according to these values the box has 16Mb, with 4Mb Flash

Pace Di4001NC diag screen

Information relegating to the MPEG decoders. You can also set the remote control configuration here and enabled the rear in or outputs, this has little effect since the software does not support this

Pace Di4001NC diag screen

No PPV events…

Pace Di4001NC diag screen

Flash memory information, the capacity, bad flash sectors and where the image came from.

More Information

NTL CR3 Software – Software this box runs on

Pace Di4001N – Another model/revision of an ntl box

Pace Di4000N – a STB from another ntl platform

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