1. Pengenalan
The DIRECTV PI21 Power Inserter is an essential component designed to provide power to DIRECTV Single Wire Multiswitch (SWM) Low Noise Block (LNB) converters. This device ensures proper functionality of your SWM system by delivering the necessary voltage through the coaxial cable, eliminating the need for a separate power supply at the LNB location.
Key features include a frequency range of 2000 kHz to 2150 MHz, minimal signal loss of 2 dB, and compatibility with standard 100-120 V AC input. It features F-type ports for easy integration into your existing satellite setup. The PI21 is compatible with DIRECTV Slim Line Dish Antennas and supports SWM8 and SWM16 multiswitches through a coax connection.
2. Maklumat Keselamatan
2.1 Notis Penting
This device is designed exclusively for DIRECTV systems. It is NOT compatible with DISH Network or any other cable provider. Attempting to use it with incompatible systems may cause damage to the power inserter or connected equipment.
2.2 Garis Panduan Keselamatan Am
- Ensure the power inserter is connected to a grounded electrical outlet.
- Jangan dedahkan unit kepada air atau kelembapan berlebihan.
- Avoid placing the unit in areas with extreme temperatures or poor ventilation.
- Jangan cuba membuka atau menservis unit ini sendiri. Rujuk semua servis kepada kakitangan yang berkelayakan.
- Ensure all coaxial cable connections are tight and secure to prevent signal loss or electrical hazards.
3. Persediaan dan Pemasangan
3.1 Kandungan Pakej
- DIRECTV PI21 Power Inserter Unit
- Attached AC Power Cord
3.2 Sambungan Selesaiview
The PI21 Power Inserter features two F-type coaxial ports: 'SIGNAL TO IRD' and 'POWER TO SWM'. These ports are clearly labeled on the unit for correct connection.

Gambar 1: Lebihview of the DIRECTV PI21 Power Inserter.

Rajah 2: Depan view detailing the 'SIGNAL TO IRD' and 'POWER TO SWM' coaxial ports.
3.3 Langkah Pemasangan
- Connect to SWM: Connect a coaxial cable from the 'POWER TO SWM' port on the PI21 to the SWM LNB or SWM multiswitch. This connection delivers power to the SWM system.
- Connect to Receiver (IRD): Connect a coaxial cable from the 'SIGNAL TO IRD' port on the PI21 to your DIRECTV receiver (IRD). This connection carries the satellite signal to your receiver.
- Sambungan Kuasa: Plug the attached AC power cord of the PI21 into a standard 100-120V AC electrical outlet.
- Sahkan Kuasa: Check for the indicator light on the PI21 unit to confirm it is receiving power and operating correctly.
The PI21 is suitable for both indoor and outdoor installation with remote power delivery, offering flexible placement options.
3.4 Arahan Pemasangan Dinding
The PI21 unit can be wall-mounted for secure placement. Follow these steps:
- Orient the power inserter with the coaxial connectors facing downwards.
- Place drywall anchors at the desired mounting hole positions on the wall.
- Mount the power inserter using #8, 1/4-inch slotted hex head screws, 1 inch long, through the flange mounting holes.
- Tighten the two screws until the power inserter is firmly mounted to the wall.

Rajah 3: Belakang view of the PI21, illustrating mounting flanges.
4. Operasi
Once properly connected and powered, the DIRECTV PI21 Power Inserter operates automatically. It continuously supplies the required 21V DC power to the connected SWM LNB or multiswitch, enabling it to function correctly and deliver satellite signals to your DIRECTV receiver(s).
4.1 Lampu Penunjuk
The unit features a small LED indicator light, typically located on the top surface. This light illuminates when the power inserter is receiving AC power and is actively supplying DC power to the SWM system. A lit indicator confirms normal operation.
5. Penyelenggaraan
The DIRECTV PI21 Power Inserter is designed for reliable, low-maintenance operation. To ensure its longevity and optimal performance, consider the following:
- Pembersihan: Periodically wipe the unit with a soft, dry cloth to remove dust and debris. Do not use liquid cleaners or solvents.
- Sambungan: Occasionally check all coaxial cable connections to ensure they remain tight and secure. Loose connections can lead to signal degradation.
- Persekitaran: Ensure the unit is not exposed to direct sunlight, extreme heat, or freezing temperatures. While suitable for outdoor installation, protect it from direct weather exposure where possible.
- Pengudaraan: Pastikan aliran udara yang mencukupi di sekeliling unit untuk mengelakkan terlalu panas.
6. Penyelesaian masalah
If you experience issues with your DIRECTV system that you suspect are related to the PI21 Power Inserter, refer to the following troubleshooting steps:
6.1 No Satellite Signal or Intermittent Signal
- Semak Kuasa: Verify that the PI21's indicator light is illuminated. If not, ensure the power cord is securely plugged into a working electrical outlet.
- Periksa Sambungan: Ensure all coaxial cables are tightly connected to the 'POWER TO SWM' and 'SIGNAL TO IRD' ports on the PI21, as well as to the SWM LNB/multiswitch and the DIRECTV receiver.
- Correct Port Usage: Confirm that the cable going to the SWM LNB/multiswitch is connected to the 'POWER TO SWM' port, and the cable going to the receiver is connected to the 'SIGNAL TO IRD' port. Incorrect wiring can prevent the system from functioning.
- Kitaran Kuasa: Unplug the PI21 from the electrical outlet, wait 10-15 seconds, and then plug it back in. This can reset the unit.
- Tetapan Semula Sistem: If your DIRECTV receiver requires frequent resets, a failing power inserter might be the cause. Consider replacing the unit if other troubleshooting steps fail.
6.2 Unit Tidak Dihidupkan
- Check Outlet: Uji salur keluar elektrik dengan peranti lain untuk memastikan ia berfungsi.
- Kord Kuasa: Ensure the power cord is not damaged and is fully inserted into the unit and the wall outlet.
If troubleshooting steps do not resolve the issue, contact DIRECTV customer support or a qualified technician for further assistance.
7. Spesifikasi Teknikal
| Nombor Model | PI21 (PI21R1-03) |
| Julat Kekerapan | 2000 kHz hingga 2150 MHz |
| Signal Loss (Insertion) | 2 dB |
| Input Voltage | 100 V AC hingga 120 V AC |
| Keluaran Voltage | 21 V DC |
| Arus Keluaran | Maksimum 1.2 |
| Output Kuasa Maks | 25.2 W |
| Pelabuhan | F-type (SIGNAL TO IRD, POWER TO SWM) |
| Dimensi Produk | 3 x 6 x 4 inci |
| Berat Barang | 11.8 auns |
| Pengeluar | DIRECTV |
| Keserasian | DIRECTV SWM LNBs, SWM8 and SWM16 multiswitches |
| Pensijilan | UL Tersenarai |
8. Waranti dan Sokongan
For detailed warranty information, product registration, or technical support, please visit the official DIRECTV weblaman web atau hubungi khidmat pelanggan mereka secara langsung. Adalah disyorkan untuk menyimpan resit pembelian anda sebagai bukti pembelian untuk sebarang tuntutan jaminan.
You can typically find contact information and support resources on the manufacturer's website or within your DIRECTV service documentation.





