Anritsu ML2400A Series - 6-11 GPIB EMULATION MODES

6-11 GPIB EMULATION
MODES
The ML2400 Anritsu power me ter em u lates the GPIB com mu ni ca tion of other
power me ters. The em u la tion mode can be set through the front panel
SYSTEM|more|more|Rear panel|GPIB|MODE menu (see Chap ter 4, Op er a tion)
or through the GPIB com mand EMUL (page 6-89 ). The avail able em u la tion
modes and com mand re stric tions are:
Power Me ter Com mand Restrictions
Hewlett-Packard HP 436 All com mands sup ported.
Hewlett-Packard HP 437 Com mands not sup ported : DN, DU, ERR?,
LP, LT, SP, UP and @2.
Hewlett-Packard HP 438 Com mands not sup ported : DO, LP1 and
LP2.
Anritsu ML4803 Com mands not sup ported : PCT, VSW,
RDB, DBV50, DBV75, VLT50 & VLT75.
In some cases, there are dif fer ences be tween the ML2400A in em u la tion mode
and the ac tual me ter be ing em u lated. These dif fer ences are pre sented in the
fol low ing sec tions.
Zeroing a Sen sor The time taken for an ML2400 to com plete the ZEROing se quence for a sen sor
dif fers from the time taken by the em u lated power me ters. Any GPIB con trol
pro grams that ZERO the power me ter will have no prob lems with this time
dif fer ence if the de fined ZEROing con trols and/or se quences for the de vice be -
ing em u lated are fol lowed.
q The HP 436 uses the 'Z1T' AUTO ZERO se quence de scribed in the
HP 436 man ual.
q The HP 437 and HP 438 use bit 1 of the sta tus byte to in di cate
ZERO or CAL com ple tion.
q The ML4803 uses bit 0 of the sta tus byte to in di cate that the
ZERO se quence is not com plete.
Sen sor Ranges The sen sor op er at ing ranges for the ML2400 power me ters are dif fer ent from
those of the me ters be ing em u lated. Re fer to the spe cific range in for ma tion for
range com mands in each em u la tion sec tion.
Out put For mat In the HP 437 and HP 438, the for mat of the read ings agrees with the for mat
spec i fied in the man u als, which may dif fer from the out put from some HP437
and HP 438's.
For ex am ple: –14.236 may be out put by the HP437 or HP 438 as '–14.236e00'
or '–1.4236e+01'. The ML2400A in HP 437 or HP 438 em u la tion modes will
out put as the man ual spec i fies '–1.4236e+01'.
6-86 ML2400A OM
GPIB EMULATION MODES GPIB OPERATION
NOTE
These em u la tion
modes are not avail -
able in CDMA read out
mode.