产品名称：通讯变压器测试仪

产品参数

General

Line side termination: 50, 75, 100, 120, 135, 600, 900 Ω
Equipment side termination: Customer is required to supply centre tapped 1% resistor

Insertion Loss

 Return Loss

Transverse balance (analogue voiceband)

Drive level: 0 dBm (0.775 V rms)
Frequency range: 200 Hz to 10 kHz
Basic Accuracy: to 80 dB ±1 dB

Transverse balance (digital)

Drive level: 0 dBm (0.316 V rms)
Frequency range: 10 kHz to 3 MHz
Basic Accuracy:
to 55 dB ±1dB (≤1.55 MHz)
to 45 dB ±1dB (>1.55 MHz)
45 dB to 55 dB ±3 dB (>1.55 MHz)

Longitudinal balance (analogue voiceband)

Drive level: 1 V rms
Frequency range: 200 Hz to 10 kHz
Basic accuracy: to 80 dB ±1 dB

Longitudinal balance (digital)

Drive Level: 0 dBm
Frequency Range: 10 kHz to 3 MHz
Basic Accuracy:
to 55 dB ±1 dB (10 kHz to 1.1 MHz)
to 45 dB ±1 dB (>1.1 MHz)
45 dB to 55 dB ±3 dB (>1.1 MHz)

Total Harmonic Distortion

Maximum drive level: 6 V rms (±2%) at the DUT
Drive level units: Vrms, Vp-p, dBm
Frequencies: 150, 300, 500, 600, 5k, 10k, 15k, 20k, 25k, 30k, 40k, 50k, 100k, 150k and 200 kHz

DC bias current

Output current: 1 to 200 mA
Step size: 0.1 mA (1 to 20mA), 1mA (20 to 200 mA)
Basic accuracy: ±1% ±1 µA (1 to 20 mA), ±1% ±10µA (20 to 200 mA)
Compliance voltage: 22.5 V (into line side termination)

Power Supply

Input voltage: 115 V AC ±10% or 230 V AC ±10% (selectable)
Frequency: 50/60 Hz

Environmental

Installation category: II (in accordance with IEC664)
Temperature range: Storage -40°C to 70°C,
Operating 0°C to 40°C.
Full accuracy 15°C to 35°C.
Relative humidity: up to 80% non-condensing
Pollution degree: 2 (mainly non-conductive)
Altitude: up to 2000 m

Safety

Complies with the requirements of EN61010-1

EMC

Immunity: EN61326-1
Emissions: EN55022 Class A

Mechanical

Height: 150 mm (6″)
Width: 440 mm (17 3/8″)
Depth: 520 mm (20 1/2″)
Weight: 14 kg

Order codes and options