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MOBILE COMMUNICATIONS MEASURING INSTRUMENTS

DIGITAL MOBILE RADIO TRANSMITTER TESTER

GPIB Ethernet

MS8608A

OPTION

9 kHz to 7.8 GHz

Measures Wide-Band Signals up to 20 MHz

The MS8608A is a transmitter tester equipped with an internal spec-trum analyzer, a modulation analyzer and a power meter. One tester covers the development to manufacturing of base stations, mobile stations and devices. The spectrum analyzer has resolution bandwidths up to 20 MHz, meaning that it can readily support measurement of a wide-band sig- nal. The modulation analyzer realizes all Vector Signal Analysis (VSA) functions through high-speed DSP processing. The power sensor can perform highly accurate power measurements of ±0.4 dB by using an amorphous power sensor. Up to three dedicated measurement software options (such as W- CDMA and GSM/EDGE) can be installed simultaneously. Input signals can be selected from either RF or I/Q inputs. For I/Q signals, balanced or unbalanced input can also be selected. It is equipped with GPIB, RS232C and 10 Base-T (optional) inter- faces for remote measurement. High-speed GPIB data transmission of 120 kbyte/s enables high-speed measurement on the manufactur- ing line. The monitor uses an easy-to-see 6.5 type TFT color LCD.

Feature ?

Broadband signal support (up to IMT-2000 2 Mbit/s)

Specifications?

MS8608A

Frequency range9 kHz to 7.8 GHz, 9 kHz to 7.9 GHz (with option 35) Max. input levelHigh-power input: +40 dBm (10 W), Low-power input: +20 dBm (100 mW) High-power input50 Ω , VSWR: ≤ 1.2 ( ≤ 3 GHz)/ ≤ 1.3 (>3 GHz)Input impedanceLow-power inputPower meter: 50 Ω , VSWR: ≤ 1.3 ( ≤ 3 GHz)Except power meter: 50 Ω , VSWR: ≤ 1.5 ( ≤ 3 GHz)/ ≤ 2.0 (>3 GHz)

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Input attenuator: ≥ 4 dB Input connectorN-type (high-power input), SMA-type (low-power input), BNC-type (I/Q input) Input: Balanced, unbalancedInput impedance: 1M Ω (parallel capacitance: <100 pF), 50 Ω I/Q inputBalanced inputDifferential Voltage: 0.1 to 1 V(p-p), In-phase voltage ±2.5 VUnbalanced input: 0.1 to 1 V(p-p), AC/DC switchable Frequency: 10 MHz Starting characteristics: ≤ 5 x 10
–8 (compared to frequency after 24 hour warm-up characteristics after 10 minute warm-up)Reference oscillatorAging rate: ≤ 2 x 10
–8 /day, ≤ 1 x 10
–7 /year (compared to frequency after 24 hour warm-up)Temperature characteristics: ≤ 5 x 10
–8 (0 to +50ËšC, compared to frequency at 25ËšC) Frequency range: 30 MHz to 3 GHzPower meterLevel range: 0 to +40 dBm (high-power input), –20 to +20 dBm (low-power input)Measurement accuracy (after zero calibration): ±10% Continued on next page

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