Impedance stabilization networks (ISN, or with CISPR 16-1-2 called AAN: asymmetric artificial network) are defined for measuring of conducted common mode disturbances at information technology equipment (ITE) as required in CISPR 22 and CISPR 32. The ISN is placed between the equipment under test (EUT) and auxiliary equipment (AE) or load which are necessary for the operation of the EUT. The ISN establishes the common-mode termination impedance for the EUT’s telecommunications port during measurement and emulates the unsymmetrical contribution (longitudinal conversion loss, LCL) of the connected line. Different ISNs are available in relation to the line category, line numbers and pin-arrangement. The ISN T8-Cat6 is designed for measurements on up to four unscreened single balanced pairs with cable category cat. 6. It can also be used as CDN for immunity testing according IEC/EN 61000-4-6 up to 80 MHz. The ISN T8-Cat6 is designed for measurements on up to four unscreened single balanced pairs with cable category cat. 6. It can also be used as CDN for immunity testing according IEC/EN 61000-4-6 up to 80 MHz.

阻抗穩定網路（ISN），在 CISPR 16-1-2 中亦稱為 AAN（非對稱人工網路），用於測量資訊技術設備（ITE）在 CISPR 22 和 CISPR 32 規範下的傳導共模干擾。

ISN 置於**受測設備（EUT）與輔助設備（AE）**或負載之間，以確保受測設備在測試期間的電信端口具有適當的共模終端阻抗，並模擬連接線纜的非對稱特性（縱向轉換損耗，LCL）。

針對不同的線纜類別、線數及針腳排列，提供不同類型的 ISN。

ISN T8-Cat6 設計用於測試最多四條非屏蔽單平衡雙絞線（Cat. 6 類別線纜），並可作為 CDN（耦合/去耦網路），用於 IEC/EN 61000-4-6 標準下的抗擾性測試，頻率範圍可達 80 MHz。

技術參數：

頻率範圍: 150 kHz ～ 80 MHz
線路參數: 1 ～ 4 對
額定功率 (EUT和 AE埠)
最大交流電壓 (線對地): 63 V
最大直流電壓 (線對地): 100 V
最大電流 : 400 mA (線), 800 mA (對)
測試電壓: 200 VDC, 2 sec
共模阻抗 (EUT 埠)
150 kHz ～ 30 MHz: 150 Ω ±20 Ω
30 MHz ～ 80 MHz: 150 Ω +60 Ω /-45 Ω
相位角 (EUT 埠) 150 kHz ～ 30 MHz: 0° ±20°
耦合路徑(In/Out-埠/EUT)
接頭: BNC 50 Ω
RF 電壓: <15 V
頻率範圍: 150 kHz ～ 80 MHz
分壓係數 (RF 輸入 EUT 埠)
150 kHz ～ 30 MHz: 9.5 dB ±1 dB
30 MHz ～ 80 MHz: 9.5 dB ±2 dB
傳輸寬頻* (有用信號) EUT/AE: B3 dB 250 MHz sin. typical
LCL* (EUT)
Cat. 6 150 kHz ～ 2 MHz: 75 dB ～ 74.4 dB ±3 dB
Cat. 6 2 MHz ～ 30 MHz: 74.4 dB ～ 59.3 dB +6/-3 dB
共模干擾抑制 (EUT / AE)
150 kHz ～ 1.5 MHz: ≥35 dB ～ ≥55 dB
1.5 MHz ～ 30 MHz: ≥55 dB
串擾* (PSELFEXT) (EUT / AE) 1 MHz ～ 250 MHz: ≥61 dB ～ ≥15 dB
*) 所有平衡參數都相對於100 Ω對稱阻抗

• For use with one, two, three, or four unscreened balanced pairs
• Refers schematic circuit example in CISPR 22/32 Figure D.3/G.3
• Intended for connection to cable category 6
• 1000BaseT and PoE application
• Can be used as CDN for IEC/EN 61000-4-6 immunity tests

• 適用於單一、雙、三或四組非屏蔽平衡雙絞線
• 參考 CISPR 22/32 圖 D.3/G.3 示意電路
• 適用於連接至 6 類纜線
• 適用於 1000Base-T 及 PoE 應用
• 可用於 IEC/EN 61000-4-6 抗擾度測試的傳導性擾動網路 (CDN)

• IEC / EN Basic Standards : IEC 61000-4-6
• CISPR Standards : CISPR 15 CISPR 16-1-2 CISPR 16-2-1 CISPR 22 CISPR 24 CISPR 32
• IEC / EN Generic Standards : EN 61000-6-1 EN 61000-6-2 EN 61000-6-3 EN 61000-6-4
• IEC / EN Product Standards : IEC 60533 IEC 60601-1-2 IEC 61326