Agilent Technologies 8935 series e6380a Power level. To avoid damage to the ANT in port, enter an

	Overview of theTest Set’s Built-In Tools
	Using the RF Tools Program
	Damage may result if the power input to the Test Set’s ANT IN port
CAUTION
	exceeds 60 mW (which is equivalent to 18 dBm). Damage may also
	result to the unit-under-test if it is overdriven by the DUPLEX OUT
	power level. To avoid damage to the ANT IN port, enter an
	over-estimate gain value for the Max expected gain in dB parameter.
	To avoid damage to the unit under test, ensure a low power level for the
	DUPLEX OUT level in dBm parameter.
	6. Press k1 (Begin Tst) or position the cursor at Begin and select it.

Figure 4-13 Swept Return Loss Setups

Calibration Setup Measurement Setup

	AUDIO OUT	AUDIO IN		BASEBAND OUT		DATA
		HI		LO
				I	Q	IN
ANALOG	SCOPE	EXT SCOPE	VIDEO
MODULATION	MONITOR	TRIG IN	OUT
IN	OUT

8935

ANT IN	DUPLEX OUT	16X		FRAME	EVEN	TRIGGER
		CHIP CLOCK CHIP CLOCK							RF IN/OUT
		19.6608	1.2288	CLOCK	SECOND	QUALIFIER	10 MHz	EXT
		MHz OUT	MHz OUT	OUT	SYNC IN	IN	REF OUT	REF IN

	AUDIO OUT	AUDIO IN		BASEBAND OUT		DATA
		HI		LO
				I	Q	IN
ANALOG	SCOPE	EXT SCOPE	VIDEO
MODULATION	MONITOR	TRIG IN	OUT
IN	OUT

8935

ANT IN	DUPLEX OUT	16X		FRAME	EVEN	TRIGGER
		CHIP CLOCK CHIP CLOCK							RF IN/OUT
		19.6608	1.2288	CLOCK	SECOND	QUALIFIER	10 MHz	EXT
		MHz OUT	MHz OUT	OUT	SYNC IN	IN	REF OUT	REF IN

ANT IN

6dB Pad

DUPLEX OUT	ANT IN	DUPLEX OUT
6dB Pad	6dB Pad	6dB Pad

VSWR Bridge VSWR Bridge

REFL.	IN	REFL.	IN
OUT		OUT

TEST PORT TEST PORT

Short

Attach device to

be tested.

sretloss.eps

7.A setup screen appears with a diagram of the necessary connections, similar to Figure 4-13. This is the calibration phase of the test to obtain a reference level for the device being tested. A VSWR bridge or a directional coupler and two 6 dB pads are connected to the Test Set. The pads are used to reduce impedance mismatch errors between the VSWR bridge and the DUPLEX OUT and ANT IN ports on the Test Set. A reference level is measured first with a short on the DUT (Device Under Test) port of the VSWR bridge. An open can be used as well, but the open must not be blocked in any way that might cause the signal to be reflected back. For example, using the open setup inside a van or other enclosed area may introduce inaccuracies in the measurement. Setup the hardware, then press k1 (Proceed) or the knob to continue.

8.Another setup screen appears. Attach the device being tested. Press k1 (Proceed) or the knob to continue.

94 Chapter 4

C:\Spk\Ref\RefGuideRevE\Tools.fm