HP TM 11-6625-2779-14&P Unbal Carrier Accuracy Check, Range, Frequency, Carrier Level Accuracy

Model 3555B							Section V
		Table 5-2. 75 UNBAL Carrier Accuracy Check
RANGE				3555B INDICATION (dBm)
			FREQUENCY
	30Hz to 1MHz		100Hz to 600kHz				1MHz to 3MHz
+10dBm	+10	±0.5	+10	±0.2	+10	±0.5 ±10% of meter indication in dBm
0dBm	0	±0.5	0	±0.2	0	±0.5 ±10% of meter indication in dBm
-10dBm	-10 ±0.5		-10 ±0.2		-10 +0.5 ± 0% of meter indication in dBm
-20dBm	-20 ±0.5		-20 ±0.2		-20 ±0.5 ±10% of meter indication in dBm
-30dBm	-30 ±0.5		-30 ±0.2		-30 ±0.5 ±10% of meter indication in dBm
-40dBm	-40	±0.5	-40	±0.2	40	±0.5	±10% of meter indication in dBm
-50dBm	-50	±0.5	-50	±0.2	-50	±0.5	±10% of meter indication in dBm

the 3440A/3445A and reconnect the output of the 654A to the input of the 3555B. Maintain the 654A meter reference throughout the remainder of the following checks.

c.The 3555B meter should indicate 0dBm ±0.1 dBm.

d.Check all the RANGES and frequencies listed in Table 5-2for the specified tolerances. Be sure to maintain the 654A reference established in step b.

e.Change the 654A to 600 BAL and change the 3555B to CARRIER, 600 BAL. Connect the 654A 600 BAL output to the 3555B input using a balanced cable.

f.Check the RANGES and frequencies in Table 5-3,using the same procedure described for the 75 UNBAL function.

g.Change the 654A to 135 BAL and change the 3555B to 135 BAL. Repeat step e for the same RANGES and tolerances indicated for the CARRIER 600 BAL function in Table 5.-3.

h.Change the 3555B to VF/Nm, 600 BAL and change the 654A to 600 BAL. Check the +10dBm thru -80dBm ranges in Table 5-4for the tolerances indicated.

i.Change the 3555B to 900 BAL and connect a 150 ohm ± 1% resistor in series with each input lead. Readjust the 654A for 0dBM. Repeat the checks in Table 5-4for the same tolerances.

j.To check the top two ranges, connect the equipment as shown in Figure 5-3and set the 3555B controls as follows:

FUNCTION ....... VF/Nm 600 BAL INPUT .................... TMS, TERM RANGE..........................+20dBm

k.Adjust the 201C for 7.75V on the 3440A/3445A at 100Hz.

l.Tune the 201 C from 100Hz to 20kHz, maintaining 7.75V on the 3440A/3445A. Between 100Hz and 15kHz, the 3555B indication must not change more than ±0.2dBm. Between 15 kHz and 20kHz, the indication must not change more than ±0.5dBm.

m.Check the +30dBm range using the procedure described in Steps j through 1, except change the 3555B range to +30dBm and change the 201C output level for 24.49V.

n.To check the 900 ohm function on the +20dBm and +30dBm ranges, connect a 300 ohm +0.1% resistor in series with the 3555B input in Figure 5-3.

o.Change the 3555B to 900 BAL and change the range to +20dBm.

p.Adjust the 201 C output for 9.49V as indicated on the 3440A/3445A.

q.Check for the tolerances indicated in Table 5-4for the +20dBm range.

r.Change the 3555B range switch to +30dBm and adjust the 201C for 30V on the 3440A/3445A. Check for the tolerances indicated in Table 5-4for the +30dBm range.

Table 5-3. Carrier Level Accuracy

RANGE				3555B Indication (dBm)
		135	1kHz -600kHz		10kHz - 300kHz
	600		1kHz - 150kHz		10kHz - 100kHz
-50 thru +10dBm			±0.5		±0.2*

*Increase specification by ±0.3dB on 135 ohms (or 150 ohms) when not battery powered.

5-3